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  • Java Oracle Installation /usr/bin/java: cannot execute binary file

    - by Dave
    Hi I've been trying for 1 day to get Oracle Java running on Ubuntu. I have a powermac g5 with Ubuntu 12.04 ppc64. uname -a : Linux LK37 3.2.0-53-powerpc64-smp #81-Ubuntu SMP Thu Aug 22 21:17:14 UTC 2013 ppc64 ppc64 ppc64 GNU/Linux lspci: david@LK37:~$ sudo lspc [sudo] password for david: sudo: lspc: command not found david@LK37:~$ sudo lspci 0000:00:0b.0 PCI bridge: Apple Inc. CPC945 PCIe Bridge 0000:0a:00.0 VGA compatible controller: NVIDIA Corporation NV43 [GeForce 6600 LE] (rev a2) 0001:00:00.0 Host bridge: Apple Inc. U4 HT Bridge 0001:00:01.0 PCI bridge: Broadcom BCM5780 [HT2000] PCI-X bridge (rev a3) 0001:00:02.0 PCI bridge: Broadcom BCM5780 [HT2000] PCI-X bridge (rev a3) 0001:00:03.0 PCI bridge: Broadcom BCM5780 [HT2000] PCI-Express Bridge (rev a3) 0001:00:04.0 PCI bridge: Broadcom BCM5780 [HT2000] PCI-Express Bridge (rev a3) 0001:00:05.0 PCI bridge: Broadcom BCM5780 [HT2000] PCI-Express Bridge (rev a3) 0001:00:06.0 PCI bridge: Broadcom BCM5780 [HT2000] PCI-Express Bridge (rev a3) 0001:00:07.0 PCI bridge: Apple Inc. Shasta PCI Bridge 0001:00:08.0 PCI bridge: Apple Inc. Shasta PCI Bridge 0001:00:09.0 PCI bridge: Apple Inc. Shasta PCI Bridge 0001:01:07.0 Unassigned class [ff00]: Apple Inc. Shasta Mac I/O 0001:01:0b.0 USB controller: NEC Corporation OHCI USB Controller (rev 43) 0001:01:0b.1 USB controller: NEC Corporation OHCI USB Controller (rev 43) 0001:01:0b.2 USB controller: NEC Corporation uPD72010x USB 2.0 Controller (rev 04) 0001:03:0c.0 IDE interface: Broadcom K2 SATA 0001:03:0d.0 Unassigned class [ff00]: Apple Inc. Shasta IDE 0001:03:0e.0 FireWire (IEEE 1394): Apple Inc. Shasta Firewire 0001:05:04.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5780 Gigabit Ethernet (rev 03) 0001:05:04.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5780 Gigabit Ethernet (rev 03) david@LK37:~$ I tried various ways to install Oracle Java but I always end up with: bash: /usr/bin/java: cannot execute binary file At the moment I have Installed jdk-7u25-linux-x64.tar.gz in /usr/lib/jvm/jdk1.7.0/bin/ as said in this post I already tried the web install but I get a 404 error. I hope you can help me. I started using Ubuntu yesterday so please give me the complete terminal code, it will be a lot easier for me. For those who care I want to play Minecraft and with the OpenJDK I got a java.lang error. That's why I want to install Oracle Java.

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  • Behavior Trees and Animations

    - by Tom
    I have started working on the AI for a game, but am confused how I should handle animations. I will be using a Behavior Tree for AI behavior and Cocos2D for my game engine. Should my "PlayAnimationWalk" just be another node in the tree? Something similar to this: [Approach Player] - Play Walk animation - Move Towards player - Stop Walk animation Or should the node just update an AnimationState in the blackboard and have some type of animation handler/component reference this for which animation should be playing? This has been driving me nuts :)

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  • Cannot update, apt-get cannot fetch index files

    - by Evan
    I have a fresh install of Ubuntu 11.10 from the iso 'ubuntu-11.10-desktop-amd64.iso'. I installed this in VMWare Fusion 4.1.1 running on OSX 10.7.3. When setting up the VM, I allowed easy install to take care of creating my user and installing VMWare tools. No problems during installation, everything seems to be working great. The problem is that apt-get will NOT update, so I can't do software updates or install any software with apt-get install. I have been searching high and low, and have found several threads covering similar issues. How to fix a ruined package catalog? is one, Update manager generates 404 error while attempting update. Will not update is another, Ubuntu 11.10 Update issue (failed to fetch...) is a third I have tried changing my software source download location to "Main Server" rather than "Server for United States", to no avail. Same errors. Tried sudo apt-get clean, sudo apt-get autoclean, Have done a sudo rm /var/lib/apt/lists/*, still having the exact same problem. As I said, this is a brand new installation as of yesterday evening. Since I know it will be needed, here is my output from a sudo apt-get update: evan@ubuntu:~$ sudo apt-get update Ign http://archive.ubuntu.com oneiric InRelease Ign http://archive.ubuntu.com oneiric-updates InRelease Ign http://archive.ubuntu.com oneiric-backports InRelease Ign http://archive.ubuntu.com oneiric-security InRelease Ign http://archive.ubuntu.com oneiric Release.gpg Ign http://archive.ubuntu.com oneiric-updates Release.gpg Ign http://archive.ubuntu.com oneiric-backports Release.gpg Ign http://archive.ubuntu.com oneiric-security Release.gpg Ign http://archive.ubuntu.com oneiric Release Ign http://archive.ubuntu.com oneiric-updates Release Ign http://archive.ubuntu.com oneiric-backports Release Ign http://archive.ubuntu.com oneiric-security Release Ign http://archive.ubuntu.com oneiric/main TranslationIndex Ign http://archive.ubuntu.com oneiric/multiverse TranslationIndex Ign http://archive.ubuntu.com oneiric/restricted TranslationIndex Ign http://archive.ubuntu.com oneiric/universe TranslationIndex Ign http://archive.ubuntu.com oneiric-updates/main TranslationIndex Ign http://archive.ubuntu.com oneiric-updates/multiverse TranslationIndex Ign http://archive.ubuntu.com oneiric-updates/restricted TranslationIndex Ign http://archive.ubuntu.com oneiric-updates/universe TranslationIndex Ign http://archive.ubuntu.com oneiric-backports/main TranslationIndex Ign http://archive.ubuntu.com oneiric-backports/multiverse TranslationIndex Ign http://archive.ubuntu.com oneiric-backports/restricted TranslationIndex Ign http://archive.ubuntu.com oneiric-backports/universe TranslationIndex Ign http://archive.ubuntu.com oneiric-security/main TranslationIndex Ign http://archive.ubuntu.com oneiric-security/multiverse TranslationIndex Ign http://archive.ubuntu.com oneiric-security/restricted TranslationIndex Ign http://archive.ubuntu.com oneiric-security/universe TranslationIndex Err http://archive.ubuntu.com oneiric/main Sources 404 Not Found Err http://archive.ubuntu.com oneiric/restricted Sources 404 Not Found Err http://archive.ubuntu.com oneiric/universe Sources 404 Not Found Err http://archive.ubuntu.com oneiric/multiverse Sources 404 Not Found Err http://archive.ubuntu.com oneiric/main amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/restricted amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/universe amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/multiverse amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/main i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/restricted i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/universe i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/multiverse i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/main Sources 404 Not Found Err http://archive.ubuntu.com oneiric-updates/restricted Sources 404 Not Found Err http://archive.ubuntu.com oneiric-updates/universe Sources 404 Not Found Err http://archive.ubuntu.com oneiric-updates/multiverse Sources 404 Not Found Err http://archive.ubuntu.com oneiric-updates/main amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/restricted amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/universe amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/multiverse amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/main i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/restricted i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/universe i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/multiverse i386 Packages 404 Not Found Ign http://extras.ubuntu.com oneiric InRelease Err http://archive.ubuntu.com oneiric-backports/main Sources 404 Not Found Err http://archive.ubuntu.com oneiric-backports/restricted Sources 404 Not Found Err http://archive.ubuntu.com oneiric-backports/universe Sources 404 Not Found Err http://archive.ubuntu.com oneiric-backports/multiverse Sources 404 Not Found Err http://archive.ubuntu.com oneiric-backports/main amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/restricted amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/universe amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/multiverse amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/main i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/restricted i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/universe i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/multiverse i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/main Sources 404 Not Found Err http://archive.ubuntu.com oneiric-security/restricted Sources 404 Not Found Err http://archive.ubuntu.com oneiric-security/universe Sources 404 Not Found Err http://archive.ubuntu.com oneiric-security/multiverse Sources 404 Not Found Err http://archive.ubuntu.com oneiric-security/main amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/restricted amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/universe amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/multiverse amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/main i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/restricted i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/universe i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/multiverse i386 Packages 404 Not Found Ign http://archive.ubuntu.com oneiric/main Translation-en_US Ign http://archive.ubuntu.com oneiric/main Translation-en Ign http://archive.ubuntu.com oneiric/multiverse Translation-en_US Ign http://archive.ubuntu.com oneiric/multiverse Translation-en Ign http://archive.ubuntu.com oneiric/restricted Translation-en_US Ign http://archive.ubuntu.com oneiric/restricted Translation-en Ign http://archive.ubuntu.com oneiric/universe Translation-en_US Ign http://archive.ubuntu.com oneiric/universe Translation-en Ign http://archive.ubuntu.com oneiric-updates/main Translation-en_US Ign http://archive.ubuntu.com oneiric-updates/main Translation-en Ign http://archive.ubuntu.com oneiric-updates/multiverse Translation-en_US Ign http://archive.ubuntu.com oneiric-updates/multiverse Translation-en Ign http://archive.ubuntu.com oneiric-updates/restricted Translation-en_US Ign http://archive.ubuntu.com oneiric-updates/restricted Translation-en Ign http://archive.ubuntu.com oneiric-updates/universe Translation-en_US Ign http://archive.ubuntu.com oneiric-updates/universe Translation-en Ign http://archive.ubuntu.com oneiric-backports/main Translation-en_US Ign http://archive.ubuntu.com oneiric-backports/main Translation-en Ign http://archive.ubuntu.com oneiric-backports/multiverse Translation-en_US Ign http://archive.ubuntu.com oneiric-backports/multiverse Translation-en Ign http://archive.ubuntu.com oneiric-backports/restricted Translation-en_US Ign http://archive.ubuntu.com oneiric-backports/restricted Translation-en Ign http://archive.ubuntu.com oneiric-backports/universe Translation-en_US Ign http://archive.ubuntu.com oneiric-backports/universe Translation-en Ign http://archive.ubuntu.com oneiric-security/main Translation-en_US Ign http://archive.ubuntu.com oneiric-security/main Translation-en Ign http://archive.ubuntu.com oneiric-security/multiverse Translation-en_US Ign http://archive.ubuntu.com oneiric-security/multiverse Translation-en Ign http://archive.ubuntu.com oneiric-security/restricted Translation-en_US Ign http://archive.ubuntu.com oneiric-security/restricted Translation-en Ign http://archive.ubuntu.com oneiric-security/universe Translation-en_US Ign http://archive.ubuntu.com oneiric-security/universe Translation-en Hit http://extras.ubuntu.com oneiric Release.gpg Hit http://extras.ubuntu.com oneiric Release Hit http://extras.ubuntu.com oneiric/main Sources Hit http://extras.ubuntu.com oneiric/main amd64 Packages Hit http://extras.ubuntu.com oneiric/main i386 Packages Ign http://extras.ubuntu.com oneiric/main TranslationIndex Ign http://extras.ubuntu.com oneiric/main Translation-en_US Ign http://extras.ubuntu.com oneiric/main Translation-en W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/main/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/restricted/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/universe/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/multiverse/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/restricted/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/universe/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/multiverse/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/restricted/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/universe/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/multiverse/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/main/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/restricted/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/universe/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/multiverse/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/restricted/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/universe/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/multiverse/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/main/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/restricted/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/universe/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/multiverse/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/main/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/restricted/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/universe/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/multiverse/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/restricted/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/universe/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/multiverse/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/main/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/restricted/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/universe/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/multiverse/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/main/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/restricted/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/universe/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/restricted/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/universe/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/main/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/restricted/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/universe/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/binary-i386/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead. Here is my /etc/apt/source.list: evan@ubuntu:~$ cat /etc/apt/sources.list # deb cdrom:[Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012)]/ dists/oneiric/main/binary-i386/ # deb cdrom:[Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012)]/ oneiric main restricted # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://archive.ubuntu.com/ubuntu oneiric main restricted deb-src http://archive.ubuntu.com/ubuntu oneiric main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://archive.ubuntu.com/ubuntu oneiric-updates main restricted deb-src http://archive.ubuntu.com/ubuntu oneiric-updates main restricted ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://archive.ubuntu.com/ubuntu oneiric universe deb-src http://archive.ubuntu.com/ubuntu oneiric universe deb http://archive.ubuntu.com/ubuntu oneiric-updates universe deb-src http://archive.ubuntu.com/ubuntu oneiric-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://archive.ubuntu.com/ubuntu oneiric multiverse deb-src http://archive.ubuntu.com/ubuntu oneiric multiverse deb http://archive.ubuntu.com/ubuntu oneiric-updates multiverse deb-src http://archive.ubuntu.com/ubuntu oneiric-updates multiverse ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://archive.ubuntu.com/ubuntu oneiric-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu oneiric-backports main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu oneiric-security main restricted deb-src http://archive.ubuntu.com/ubuntu oneiric-security main restricted deb http://archive.ubuntu.com/ubuntu oneiric-security universe deb-src http://archive.ubuntu.com/ubuntu oneiric-security universe deb http://archive.ubuntu.com/ubuntu oneiric-security multiverse deb-src http://archive.ubuntu.com/ubuntu oneiric-security multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. # deb http://archive.canonical.com/ubuntu oneiric partner # deb-src http://archive.canonical.com/ubuntu oneiric partner ## This software is not part of Ubuntu, but is offered by third-party ## developers who want to ship their latest software. deb http://extras.ubuntu.com/ubuntu oneiric main deb-src http://extras.ubuntu.com/ubuntu oneiric main And here is my output from lsb_release -a: evan@ubuntu:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 11.10 Release: 11.10 Codename: oneiric If anyone could help me out here, that would be wonderful!

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  • Convert NSData to primitive variable with ieee-754 or twos-complement ?

    - by William GILLARD
    Hi every one. I am new programmer in Obj-C and cocoa. Im a trying to write a framework which will be used to read a binary files (Flexible Image Transport System or FITS binary files, usually used by astronomers). The binary data, that I am interested to extract, can have various formats and I get its properties by reading the header of the FITS file. Up to now, I manage to create a class to store the content of the FITS file and to isolate the header into a NSString object and the binary data into a NSData object. I also manage to write method which allow me to extract the key values from the header that are very valuable to interpret the binary data. I am now trying to convert the NSData object into a primitive array (array of double, int, short ...). But, here, I get stuck and would appreciate any help. According to the documentation I have about the FITS file, I have 5 possibilities to interpret the binary data depending on the value of the BITPIX key: BITPIX value | Data represented 8 | Char or unsigned binary int 16 | 16-bit two's complement binary integer 32 | 32-bit two's complement binary integer 64 | 64-bit two's complement binary integer -32 | IEEE single precision floating-point -64 | IEEE double precision floating-point I already write the peace of code, shown bellow, to try to convert the NSData into a primitive array. // self reefer to my FITS class which contain a NSString object // with the content of the header and a NSData object with the binary data. -(void*) GetArray { switch (BITPIX) { case 8: return [self GetArrayOfUInt]; break; case 16: return [self GetArrayOfInt]; break; case 32: return [self GetArrayOfLongInt]; break; case 64: return [self GetArrayOfLongLong]; break; case -32: return [self GetArrayOfFloat]; break; case -64: return [self GetArrayOfDouble]; break; default: return NULL; } } // then I show you the method to convert the NSData into a primitive array. // I restrict my example to the case of 'double'. Code is similar for other methods // just change double by 'unsigned int' (BITPIX 8), 'short' (BITPIX 16) // 'int' (BITPIX 32) 'long lon' (BITPIX 64), 'float' (BITPIX -32). -(double*) GetArrayOfDouble { int Nelements=[self NPIXEL]; // Metod to extract, from the header // the number of element into the array NSLog(@"TOTAL NUMBER OF ELEMENTS [%i]\n",Nelements); //CREATE THE ARRAY double (*array)[Nelements]; // Get the total number of bits in the binary data int Nbit = abs(BITPIX)*GCOUNT*(PCOUNT + Nelements); // GCOUNT and PCOUNT are defined // into the header NSLog(@"TOTAL NUMBER OF BIT [%i]\n",Nbit); int i=0; //FILL THE ARRAY double Value; for(int bit=0; bit < Nbit; bit+=sizeof(double)) { [Img getBytes:&Value range:NSMakeRange(bit,sizeof(double))]; NSLog(@"[%i]:(%u)%.8G\n",i,bit,Value); (*array)[i]=Value; i++; } return (*array); } However, the value I print in the loop are very different from the expected values (compared using official FITS software). Therefore, I think that the Obj-C double does not use the IEEE-754 convention as well as the Obj-C int are not twos-complement. I am really not familiar with this two convention (IEEE and twos-complement) and would like to know how I can do this conversion with Obj-C. In advance many thanks for any help or information.

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  • How to write the Visitor Pattern for Abstract Syntax Tree in Python?

    - by bodacydo
    My collegue suggested me to write a visitor pattern to navigate the AST. Can anyone tell me more how would I start writing it? As far as I understand, each Node in AST would have visit() method (?) that would somehow get called (from where?). That about concludes my understanding. To simplify everything, suppose I have nodes Root, Expression, Number, Op and the tree looks like this: Root | Op(+) / \ / \ Number(5) \ Op(*) / \ / \ / \ Number(2) Number(444) Can anyone think of how the visitor pattern would visit this tree to produce output: 5 + 2 * 444 Thanks, Boda Cydo.

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  • ExtJs: Tree: how download then select using AJAX calls ?

    - by Olivier Pons
    Hi, Here's my goal : - open a tree - download the root nodes - expand automatically one specific node using AJAX (and loop n times here) until i find a leaf then select the leaf Here's the function that works when I declare the Tree : listeners: { load: function(n) { console.log('load(n)'); n.eachChild( function(n) { if ((n.id=='lys/2007') || (n.id=='lys/2007/08') || (n.id=='lys/2007/08/29')) { n.expand(false,false); } }); } } But if I don't know how to make it more "generic" (almost exactly like the ExtJs documentation). But they don't jump automatically to a specific node (i.e. I want no user interaction). Any idea / advice how to do this? Don't hesitate to edit my post to make it proper English :)

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  • LINQ to XML, a problem conceptualizing how the tree should look.

    - by snark
    Have you ever had one of those days when you've dug a hole but your so deep in now that the only option is to keep on digging and see where you come out? I thought just for giggles in the latest component I'm writing to use LINQ to XML because it was about time I saw what all the hooplah was about. The problem: I am making a graph component that contains series of data that get graphed and then you can apply a formula to that series and graph another series then apply a formula to that series and so on. So I figured that I would do so in 2 steps, create (and manage) an XML representaion of the series and how they relate to each other, then pass this xml to a draw engine which draws. Conceptually its a tree, with the exception of the root all child series being based upon a parent (1 parent can have many children. So I should always be adding child nodes to their parent and if I delete a node(series) then I can simply delete the series and its descendants (then draw) and voila all the messy iterating through each node finding parents and children is unneccessary. Trouble is I dont know how to represent this tree in XML i.e. the structure. My first attempt saw me programatically adding each series as siblings, which worked like a treat because I ended up with an ordered list and thus my order of rendering was maintained. I had this <Chart> <Series id="1">seriesText1</Series> <Series id="2">seriesText2</Series> <Series id="3">seriesText3</Series> <Series id="4">seriesText4</Series> </Chart> I'm in a muddle now ... how can I represent a series and a series that has children series. If some-one can give me a hint to how my tree should look (perhaps with a snippet on how to programatically add nodes to their parents) All the examples I have read usually have some container elements such as <ContactS> or <BookS> but my head says I have <series> some of them parent some of them children. Would appreciate a nudge in the right direction.

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  • make a tree based on the key of each element in list.

    - by cocobear
    >>> s [{'000000': [['apple', 'pear']]}, {'100000': ['good', 'bad']}, {'200000': ['yeah', 'ogg']}, {'300000': [['foo', 'foo']]}, {'310000': [['#'], ['#']]}, {'320000': ['$', ['1']]}, {'321000': [['abc', 'abc']]}, {'322000': [['#'], ['#']]}, {'400000': [['yeah', 'baby']]}] >>> for i in s: ... print i ... {'000000': [['apple', 'pear']]} {'100000': ['good', 'bad']} {'200000': ['yeah', 'ogg']} {'300000': [['foo', 'foo']]} {'310000': [['#'], ['#']]} {'320000': ['$', ['1']]} {'321000': [['abc', 'abc']]} {'322000': [['#'], ['#']]} {'400000': [['yeah', 'baby']]} i want to make a tree based on the key of each element in list. result in logic will be: {'000000': [['apple', 'pear']]} {'100000': ['good', 'bad']} {'200000': ['yeah', 'ogg']} {'300000': [['foo', 'foo']]} {'310000': [['#'], ['#']]} {'320000': ['$', ['1']]} {'321000': [['abc', 'abc']]} {'322000': [['#'], ['#']]} {'400000': [['yeah', 'baby']]} perhaps a nested list can implement this or I need a tree type?

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  • What do I do with a Concrete Syntax Tree?

    - by Cap
    I'm using pyPEG to create a parse tree for a simple grammar. The tree is represented using lists and tuples. Here's an example: [('command', [('directives', [('directive', [('name', 'retrieve')]), ('directive', [('name', 'commit')])]), ('filename', [('name', 'f30502')])])] My question is what do I do with it at this point? I know a lot depends on what I am trying to do, but I haven't been able to find much about consuming/using parse trees, only creating them. Does anyone have any pointers to references I might use? Thanks for your help.

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  • The binary you uploaded was invalid. A pre-release beta version of the SDK was used to build the app

    - by Nick
    I am having a problem submitting my new app to the appstore. ItunesConnect gives me the error: The binary you uploaded was invalid. A pre-release beta version of the SDK was used to build the application. I haven't changed anything, I can compile to a ad-hoc certificate and that works fine. I uploaded another app yesterday and that worked fine too. All the targets and project info is set to compile to the base SDK iPhone OS 3.0. I even upgraded to the latest SDK but same result. Any ideas?

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  • Convert binary information to regular data type without outside modules in python.

    - by vgm64
    Hello World. I'm tasked with reading a poorly formatted binary file and taking in the variables. Although I need to do it in C++ (ROOT, specifically), I've decided to do it in python because python makes sense to me, but my plan is to get it working in python and then tackle re-writing in in C++, so using easy to use python modules won't get me too far later down the road. Basically, I do this: In [5]: some_value Out[5]: '\x00I' In [6]: ''.join([str(ord(i)) for i in some_value]) Out[6]: '073' In [7]: int(''.join([str(ord(i)) for i in some_value])) Out[7]: 73 And I know there has to be a better way. What do you think?

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  • Is there any sense in performing binary AND with a number where all bits are set to 1

    - by n535
    Greetings everybody. I have seen examples of such operations for so many times that I begin to think that I am getting something wrong with binary arithmetic. Is there any sense to perform the following: byte value = someAnotherByteValue & 0xFF; I don't really understand this, because it does not change anything anyway. Thanks for help. P.S. I was trying to search for information both elsewhere and here, but unsuccessfully. EDIT: Well, off course i assume that someAnotherByteValue is 8 bits long, the problem is that i don't get why so many people ( i mean professionals ) use such things in their code. For example in Jon Skeet's MiscUtil there is: uint s1 = (uint)(initial & 0xffff); where initial is int.

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  • Any efficient way to read datas from large binary file?

    - by limi
    Hi, I need to handle tens of Gigabytes data in one binary file. Each record in the data file is variable length. So the file is like: <len1><data1><len2><data2>..........<lenN><dataN> The data contains integer, pointer, double value and so on. I found python can not even handle this situation. There is no problem if I read the whole file in memory. It's fast. But it seems the struct package is not good at performance. It almost stuck on unpack the bytes. Any help is appreciated. Thanks.

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  • Is there something special about the number 65535?

    - by Nick Rosencrantz
    2¹6-1 & 25 = 25 (or? obviously ?) A developer asked me today what is bitwise 65535 & 32 i.e. 2¹6-1 & 25 = ? I thought at first spontaneously 32 but it seemed to easy whereupon I thought for several minutes and then answered 32. 32 seems to have been the correct answer but how? 65535=2¹6-1=1111111111111111 (but it doesn't seem right since this binary number all ones should be -1(?)), 32 = 100000 but I could not convert that in my head whereupon I anyway answered 32 since I had to answer something. Is the answer 32 in fact trivial? Is in the same way 2¹6-1 & 25-1 =31? Why did the developer ask me about exactly 65535? Binary what I was asked to evaluate was 1111111111111111 & 100000 but I don't understand why 1111111111111111 is not -1. Shouldn't it be -1? Is 65535 a number that gives overflow and how do I know that?

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  • What would be the time complexity of counting the number of all structurally different binary trees?

    - by ktslwy
    Using the method presented here: http://cslibrary.stanford.edu/110/BinaryTrees.html#java 12. countTrees() Solution (Java) /** For the key values 1...numKeys, how many structurally unique binary search trees are possible that store those keys? Strategy: consider that each value could be the root. Recursively find the size of the left and right subtrees. */ public static int countTrees(int numKeys) { if (numKeys <=1) { return(1); } else { // there will be one value at the root, with whatever remains // on the left and right each forming their own subtrees. // Iterate through all the values that could be the root... int sum = 0; int left, right, root; for (root=1; root<=numKeys; root++) { left = countTrees(root-1); right = countTrees(numKeys - root); // number of possible trees with this root == left*right sum += left*right; } return(sum); } } I have a sense that it might be n(n-1)(n-2)...1, i.e. n!

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  • Is a red-black tree my ideal data structure?

    - by Hugo van der Sanden
    I have a collection of items (big rationals) that I'll be processing. In each case, processing will consist of removing the smallest item in the collection, doing some work, and then adding 0-2 new items (which will always be larger than the removed item). The collection will be initialised with one item, and work will continue until it is empty. I'm not sure what size the collection is likely to reach, but I'd expect in the range 1M-100M items. I will not need to locate any item other than the smallest. I'm currently planning to use a red-black tree, possibly tweaked to keep a pointer to the smallest item. However I've never used one before, and I'm unsure whether my pattern of use fits its characteristics well. 1) Is there a danger the pattern of deletion from the left + random insertion will affect performance, eg by requiring a significantly higher number of rotations than random deletion would? Or will delete and insert operations still be O(log n) with this pattern of use? 2) Would some other data structure give me better performance, either because of the deletion pattern or taking advantage of the fact I only ever need to find the smallest item? Update: glad I asked, the binary heap is clearly a better solution for this case, and as promised turned out to be very easy to implement. Hugo

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  • Why is this attempt at a binary search crashing?

    - by Ian Campbell
    I am fairly new to the concept of a binary search, and am trying to write a program that does this in Java for personal practice. I understand the concept of this well, but my code is not working. There is a run-time exception happening in my code that just caused Eclipse, and then my computer, to crash... there are no compile-time errors here though. Here is what I have so far: public class BinarySearch { // instance variables int[] arr; int iterations; // constructor public BinarySearch(int[] arr) { this.arr = arr; iterations = 0; } // instance method public int findTarget(int targ, int[] sorted) { int firstIndex = 1; int lastIndex = sorted.length; int middleIndex = (firstIndex + lastIndex) / 2; int result = sorted[middleIndex - 1]; while(result != targ) { if(result > targ) { firstIndex = middleIndex + 1; middleIndex = (firstIndex + lastIndex) / 2; result = sorted[middleIndex - 1]; iterations++; } else { lastIndex = middleIndex + 1; middleIndex = (firstIndex + lastIndex) / 2; result = sorted[middleIndex - 1]; iterations++; } } return result; } // main method public static void main(String[] args) { int[] sortedArr = new int[] { 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29 }; BinarySearch obj = new BinarySearch(sortedArr); int target = sortedArr[8]; int result = obj.findTarget(target, sortedArr); System.out.println("The original target was -- " + target + ".\n" + "The result found was -- " + result + ".\n" + "This took " + obj.iterations + " iterations to find."); } // end of main method } // end of class BinarySearch

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  • adding virtual function to the end of the class declaration avoids binary incompatibility?

    - by bob
    Could someone explain to me why adding a virtual function to the end of a class declaration avoids binary incompatibility? If I have: class A { public: virtual ~A(); virtual void someFuncA() = 0; virtual void someFuncB() = 0; virtual void other1() = 0; private: int someVal; }; And later modify this function to: class A { public: virtual ~A(); virtual void someFuncA(); virtual void someFuncB(); virtual void someFuncC(); virtual void other1() = 0; private: int someVal; }; I get a coredump from another .so compiled against the previous declaration. But if I put someFuncC() at the end of the class declaration (after "int someVal"), I don't see coredump anymore. Could someone tell me why this is? And does this trick always work? PS. compiler is gcc, does this work with other compilers?

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  • Save and Load Dictionary from encrypted or unreadable or binary format ?

    - by Prix
    I have a dictionary like the follow: public Dictionary<int, SpawnList> spawnEntities = new Dictionary<int, SpawnList>(); The class being used is as follow: public class SpawnList { public int NpcID { get; set; } public string Name { get; set; } public int Level { get; set; } public int TitleID { get; set; } public int StaticID { get; set; } public entityType Status { get; set; } public int TypeA { get; set; } public int TypeB { get; set; } public int TypeC { get; set; } public int ZoneID { get; set; } public int Heading { get; set; } public float PosX { get; set; } public float PosY { get; set; } public float PosZ { get; set; } } /// <summary>Entity type enum.</summary> public enum entityType { Ally, Enemy, SummonPet, NPC, Object, Monster, Gatherable, Unknown } How could I save this Dictionary to either a binary or encrypted format so I could later Load it again into my application ? My limitation is .Net 3.5 can't use anything higher.

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  • How do I add an object to a binary tree based on the value of a member variable?

    - by Max
    How can I get a specific value from an object? I'm trying to get a value of an instance for eg. ListOfPpl newListOfPpl = new ListOfPpl(id, name, age); Object item = newListOfPpl; How can I get a value of name from an Object item?? Even if it is easy or does not interest you can anyone help me?? Edited: I was trying to build a binary tree contains the node of ListOfPpl, and need to sort it in the lexicographic. Here's my code for insertion on the node. Any clue?? public void insert(Object item){ Node current = root; Node follow = null; if(!isEmpty()){ root = new Node(item, null, null); return; }boolean left = false, right = false; while(current != null){ follow = current; left = false; right = false; //I need to compare and sort it if(item.compareTo(current.getFighter()) < 0){ current = current.getLeft(); left = true; }else { current = current.getRight(); right = true; } }if(left) follow.setLeft(new Node(item, null, null)); else follow.setRight(new Node(item, null, null)); }

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  • minimax depth first search game tree

    - by Arvind
    Hi I want to build a game tree for nine men's morris game. I want to apply minimax algorithm on the tree for doing node evaluations. Minimax uses DFS to evaluate nodes. So should I build the tree first upto a given depth and then apply minimax or can the process of building the tree and evaluation occur together in recursive minimax DFS? Thank you Arvind

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  • Mercurial hook to disallow committing large binary files

    - by hekevintran
    I want to have a Mercurial hook that will run before committing a transaction that will abort the transaction if a binary file being committed is greater than 1 megabyte. I found the following code which works fine except for one problem. If my changeset involves removing a file, this hook will throw an exception. The hook (I'm using pretxncommit = python:checksize.newbinsize): from mercurial import context, util from mercurial.i18n import _ import mercurial.node as dpynode '''hooks to forbid adding binary file over a given size Ensure the PYTHONPATH is pointing where hg_checksize.py is and setup your repo .hg/hgrc like this: [hooks] pretxncommit = python:checksize.newbinsize pretxnchangegroup = python:checksize.newbinsize preoutgoing = python:checksize.nopull [limits] maxnewbinsize = 10240 ''' def newbinsize(ui, repo, node=None, **kwargs): '''forbid to add binary files over a given size''' forbid = False # default limit is 10 MB limit = int(ui.config('limits', 'maxnewbinsize', 10000000)) tip = context.changectx(repo, 'tip').rev() ctx = context.changectx(repo, node) for rev in range(ctx.rev(), tip+1): ctx = context.changectx(repo, rev) print ctx.files() for f in ctx.files(): fctx = ctx.filectx(f) filecontent = fctx.data() # check only for new files if not fctx.parents(): if len(filecontent) > limit and util.binary(filecontent): msg = 'new binary file %s of %s is too large: %ld > %ld\n' hname = dpynode.short(ctx.node()) ui.write(_(msg) % (f, hname, len(filecontent), limit)) forbid = True return forbid The exception: $ hg commit -m 'commit message' error: pretxncommit hook raised an exception: apps/helpers/templatetags/include_extends.py@bced6272d8f4: not found in manifest transaction abort! rollback completed abort: apps/helpers/templatetags/include_extends.py@bced6272d8f4: not found in manifest! I'm not familiar with writing Mercurial hooks, so I'm pretty confused about what's going on. Why does the hook care that a file was removed if hg already knows about it? Is there a way to fix this hook so that it works all the time? Update (solved): I modified the hook to filter out files that were removed in the changeset. def newbinsize(ui, repo, node=None, **kwargs): '''forbid to add binary files over a given size''' forbid = False # default limit is 10 MB limit = int(ui.config('limits', 'maxnewbinsize', 10000000)) ctx = repo[node] for rev in xrange(ctx.rev(), len(repo)): ctx = context.changectx(repo, rev) # do not check the size of files that have been removed # files that have been removed do not have filecontexts # to test for whether a file was removed, test for the existence of a filecontext filecontexts = list(ctx) def file_was_removed(f): """Returns True if the file was removed""" if f not in filecontexts: return True else: return False for f in itertools.ifilterfalse(file_was_removed, ctx.files()): fctx = ctx.filectx(f) filecontent = fctx.data() # check only for new files if not fctx.parents(): if len(filecontent) > limit and util.binary(filecontent): msg = 'new binary file %s of %s is too large: %ld > %ld\n' hname = dpynode.short(ctx.node()) ui.write(_(msg) % (f, hname, len(filecontent), limit)) forbid = True return forbid

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  • how to create binary of iphone application

    - by CodeWriter
    hello, On reading the iTunesConnect_DeveloperGuide.pdf, i came across the term binary. This is the paragraph found in the pdf: To submit your application through iTunes Connect and get it posted on the App Store successfully, make sure you have the following: Application binary (includes 57px icon), large 512px icon for use on the App Store, primary screenshot, contract information, export compliance information and applica- tion metadata It is also mentioned that the binary should be a zipped file. Can anyone please explain what is a binary and how to create one? Thanks

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  • Moving Binary logs in Mysql to a different harddisk

    - by Darini
    This question is about Mysql Binary logging.We need to move the Binary logging to a different hard disk . What is the configuration change required in Mysql?.Currently Binary logs go into the same folder as the ibdata and there is a replication slave running which needs the binary logs

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