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• Laser range finder, what language to use? Beginner advice

  - by DrOnline

  I hope this is the right place. I am a programming beginner, and I want to make a laser range finder, and I need advice about how to proceed etc. In a few weeks I will get a lot of dirt cheap 3-5V lasers and some cheap usb webcams. I will point the laser and webcam in parallel, and somehow use trigonometry and programming to determined distance. I have seen online that others made done it this way, I have purposefully not looked at the details too much because I want to develop it on my own, and learn, but I know the general outline. I have a general idea of how to proceed. The program loads in a picture from the webcam, and I dunno how images work really, but I imagine there is a format that is basically an array of RGB values.. is this right? I will load in the red values, and find the most red one. I know the height difference between the laser and the cam. I know the center dot in the image, I know the redmost dot. I'm sure there's some way to figure out some range there. TO THE POINT: 1) Is my reasoning sound thus far, especially in terms of image analysis? I don't need complete solutions, just general points 2) What I need to figure out, is what platform to use. I have an arduino... apparently, I've read it's too weak to process images. Read that online. I know some C I know some Python I have Matlab. Which is the best option? I do not need high sampling rates, I have not decided on whether it should be automated or whether I should make a GUI with a button to press for samples. I will keep it simple and expand I think. I also do not need it to be super accurate, I'm just having fun here. Advice!

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• How to synchronize a whole Ubuntu?

  - by Avio

  I think that the time is ripe to have my whole Ubuntu synchronized just as my Dropbox folder is. Given that we are always talking about files and directories, what's the difference between my Documents folder and my /usr system directory? Almost none, except for their location. In fact, I think that there is just one big issue that prevents people to have their beloved installations mirrored wherever they go: symlinks. Dropbox, Google Drive, Ubuntu One, Sugarsync, Skydrive, none of these services support symlinking. This means that if I push a symlink in one of the synced folders, locally the symlink is kept as is, but remotely (in the cloud or on the other synced machines) the symlink is resolved to the actual file that was originally pointed to. This completely disrupts Linux installations, thus these services can't be used for this purpose. So the question is. Does anybody knows a way to achieve this? A whole Ubuntu, always synchronized with a remote running copy, but still locally stored on both disks? My best guess is that I could use NFS. But the main difference between Dropbox and NFS is that NFS is a remote filesystem that always forces to remotely access the files, while Dropbox pushes modifcations to local filesystems (and thus would perform better). I've also heard about NFS caching. Does anybody knows if this solution could approximate Dropbox in this sense? P.s. I know that /boot, /dev, /proc, /run, /tmp and device-specific mountpoints in /mnt and /media will have to be left out the sync mechanism. What I'm interested in is the principle. Can this be done with reasonable performance, having reasonable resources (e.g. ~ 1Mbps upload bandwidth and a public IP address)?

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• SunSpace - a sentimental moment

  - by me

  I just came back from California where I had a little sentimental moment.With the great help from some former Sun colleagues we move the old SunSpace gear into a new data center in Santa Clara.We will re-purpose the hardware as a new development infrastructure to build integrated demos around Oracle WebCenter products, Business Applications and Social Services. now - I could not resist to restart the SunSpace applications and see if it still works. And hey - even though we had to re-IP the entire  stack (sun.com domain is gone) and with some little hacking (thanks to Apache reverse proxy) -  we got it back! Hey Max - now I just need to change your SSO hack to get login working again Hmm - I won't - but it is really nice to see it working again .. and it's time to switch it off and to work  on the next cool things .. Do you know Oracle WebCenter Sites (formely Fatwire)? Its Oracle's Web Experience Management Solution - a pretty cool technology and a very slick User Interface. I specially like the drag&drop functionality which allows non technical users to easily publish content.  Why do I mention it here ?  Because we will use the SunSpace gear to build cool  Oracle WebCenter Sites demos and proof of concepts integration  into Business Applications and Social Services  This is a sneak preview what we are working on. Stay tuned.....

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• VPNs - The ins and outs of IPSec & VPNs in general [on hold]

  - by Magus

  I have to decided to mess around with VPNs on my home router, to access a couple of servers in the back room of my house, however, I went into this thinking happy thoughts and easy-peasy-lemon-squeezy... Now I feel like doing drugs, as if maybe that will help me understand the myriad of terms which come with this nifty little tool. Basically, I do understand WHAT a VPN is, but I have no idea how to set one up. I have a Cisco router ( will supply more info if needed ), and would prefer to use IPSec for this ordeal. I'd like to have the following terms explained ( and yes, I have used the famous Google to help, close but no cigar ) : "Local Secure Group", "Remote Secure Group", "Remote Secure Gateway", how different types of "Keys" work ( again, I know the basics ), and for the "Add VPN Config" screen on the connecting device: "Server, does it have to be an address, or just an IP?", "Account; is this the tunnel name?", I am going to assume 'Password' means the Key, "Group Name; or is THIS the tunnel name?", and "Secret; I halfish know what this is..." I would really appreciate any contribution made, no matter how small, even if it includes a redirect. I just want to learn. Thanks in advance! Magus

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• Scaling sprite velocity / co-ordinatesin Android

  - by user22241

  I'm trying to find the answer to a question that I've had for a long time, but am having trouble finding it! I hope someone can help :-) I'm trying to find information on how to scale sprite velocity / movement / co-ordinates. What I mean by this is how do I get a sprite to move at the same speed relative to the screen size / DPI so that it takes the same amount of real-time to get from one side of the screen to the other? All of the posts pertaining to sprite scaling that I can find on the various forums relate to the size of the sprite, but this part of it I'm OK with so far, it's just that when I move a sprite, it kind of gets there at different speed depending on the dpi / resolution of the device. I hope I'm making sense. This is the code I have so far, instead of using explicit amounts, like 1, I'm using something like the following: platSpeedFloat= (1 * (dpi/160)); //Use '1' so on an MDPI screen, the sprite will move by 1 physical pixel Then basically what I'm doing is something like this: (all varialble previously declared) platSpeedSave+=platSpeedFloat; //Add the platSpeedFloat value to the current platSpeedSave value platSpeed=(int) platSpeedSave; //Cast to int so it can be checked in the following statement if (platSpeed==platSpeedSave) //Check the casted int value to float value stored previoiusly {floorY=floorY-platSpeed; //If they match then change the Y value platSpeedSave=0;} //Reset Would be grateful if someone could assists - hope I'm making sense. The above doesn't seems to work the sprite moves 'faster' on lower DPI screens. Thanks

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• cannot log in to all account except guest after mounting new partition

  - by student

  I really really need help. to do my homework from school, since two days ago, I was installing oracle 11g on my ubuntu. through that process, there was lots of problems also, but searching a lot, in somehow I could go to the next phase installing it. (because it was the first time to install on ubuntu by myself..) but when I was making password for oracle and clicked next, it says there are not enough space for home/oracle folder, So to make another space, I mounted another space after checking Gparted and using Software device management, I mounted it. And when I rebooted it, since then, I cannot log in to my own administrator account and even to oracle account(that I made for oracle 11g on ubuntu ) when I type the passwords for it, it seems to work but it redisplay the first page to log in, without really logging in it.. So I loggined to here as guest account... and even I cannot try gnome console manipulation to restore or fix it.. because it is guest account... I`m struggling for three days and... help me, how do I need to do? and at the time oracle said it needs enough space for its home folder, how I should have done?

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• Boot failure on Ubuntu 11.04

  - by B Seven

  I was using my laptop with Ubuntu without problem for a few months. I did not update any software or install any OS updates. This morning when it started, I got error: no such device:.... error: no such disk error: you need to load the kernel first. Press any key to continue... Then takes me back to GRUB menu. Both Ubuntu option and recovery mode option show the same thing (above). What does this mean? How do I fix it? Since I did not install anything new, does it mean the SSD is dying (again)? How to check the SSD to and fix any file system errors? Ubuntu 11.04 EDIT: Just remembered something: when the system was shutting down, it did not turn off. There were a bunch of weird output statements, and I assumed the system had shut down so I turned it off with the power button. Perhaps something got corrupted because of that.

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• How do I get 12.04 to recognize swap partition so that I can hibernate?

  - by Kayla

  I justed installed 12.04 and used gparted to erase and enlarge my swap partition. When I rebooted, gparted said that the file partition for the swap was unknown. Gparted doesn't let me change the file partition to "linux-swap". It does let me change it to NTFS, but when I reboot, it goes back to "unknown". Thanks in advance for your help. Output from sudo swapon -s: Filename Type Size Used Priority /dev/mapper/cryptswap1 partition 9025532 0 -1 Output from sudo fdisk -l: Disk /dev/sda: 250.1 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x9d63ac84 Device Boot Start End Blocks Id System /dev/sda1 * 2048 2459647 1228800 7 HPFS/NTFS/exFAT /dev/sda2 2459648 197836472 97688412+ 7 HPFS/NTFS/exFAT /dev/sda3 466890752 488395119 10752184 7 HPFS/NTFS/exFAT /dev/sda4 197836798 466890751 134526977 5 Extended /dev/sda5 197836800 448837631 125500416 83 Linux /dev/sda6 448839680 466890751 9025536 82 Linux swap / Solaris Partition table entries are not in disk order Disk /dev/mapper/cryptswap1: 9242 MB, 9242148864 bytes 255 heads, 63 sectors/track, 1123 cylinders, total 18051072 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x951b7f53 Disk /dev/mapper/cryptswap1 doesn't contain a valid partition table

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• Trouble installing from disk

  - by SuperNatural

  I'm writing this in desperation, Windows is slowly killing me and i need to change my home pc os to Ubuntu 11.04 as soon as possible. I created a USB flash drive to install ubuntu, twice, and both times they failed to begin install on restart of my pc. i read on another forum that you might have to change some boot sequence in BIOS but when pressing F2 to enter it didnt work. After a lot of cursing, I made myself an UBUNTU install cd and booted. To my excitement, it now displayed... try ubuntu and install ubuntu. i clicked install ubuntu which lead me to the preparing to install ubuntu display, i checked download updates while installing and clicked forward. The very next display is ' allocate drive space ' i assume there are meant to be options of drives provided but mine is just a blank box and underneath all the options to create a new partition table, add, change, delete and revert are all greyed out. There is a drop down menu labelled 'device for boot loader installlation' but the only option is /dev/sda. when i click install, a no root file system error comes up telling me to please correct from the partitioning menu. I am extremely frustrated. please!! can anyone help me...

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• Any faster method?

  - by rajeshverma423

  Manhattan distance is used to the center in chess code that uses an 0x88 board . 0x88 board is 128 square. public static final byte DISTANCE[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 5, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 5, 4, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 7, 6, 5, 4, 3, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0, 7, 6, 5, 4, 3, 2, 1, 2, 3, 4, 5, 6, 7, 0, 0, 7, 6, 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 5, 6, 7, 0, 0, 7, 6, 5, 4, 3, 2, 1, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0, 7, 6, 5, 4, 3, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 7, 6, 5, 4, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 5, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; Is there any other faster method instead of 0x88 to find distance?

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• Installed geany has no options

  - by arundex

  I'm new to geany IDE. I installed geany from ubuntu software centre, and the window has no options other than opening a new file. I can't file any preference, tools option too for configuring. I heard it is a full fledged IDE. Also, from the screenshots available from the software center, it seems my Geany installation is missing almost everything. I'm not able to post the screenshots, but my interface just has 3 buttons. create a new file, open an existing file and a quit button. Everything else is inactive. I accidentally closed the sidepane, and I can't find any options to bring back that too. EDIT What am I missing in my Geany installation? PS: I tried installing from source from geany website. But, it posted some error saying GTK files not found. But, I removed geany from software centre and reinstalled several times. It installed Geany without problems, but with afore mentioned problems, that is I have nothing in my interface. Also, even after reinstalling, somehow Geany remembers to hide the sidepane by default, which I'm not able to see at all. I also added Geany ppa repository manually for latest fixes, but still when I reinstall from software centre I get a plain blank Geany interface. Thanks.

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• How do I solve "System is running in low graphics issue" in Ubuntu INSTALLER ?

  - by hellodear

  I made a bootable USB for installing Ubuntu 12.04 LTS alongside Windows 8.1. I inserted my USB device and then booted into it. Then it showed me 2 options - 'Try Ubuntu' or 'Install Ubuntu'. Now I press 'Try Ubuntu' and then it says, "The system is running in low graphics mode". Then I press 'OK'. Then it showed me 4 options. Then again I click 'OK'. Then it shows a black screen and nothing happens. I have tried all possible answers provided in AU. What should I do? Please help. PS :- I am using Windows 8.1 with dedicated graphic card which is AMD Radeon HD 8670M. I am trying to do this in a Dell Laptop 3537 Inspiron. UPDATE :- I tried running the liveUSB session with nomodeset on and i was able to enter the installer. But when I run boot-repair(so that my Ubuntu gets detected in the GRUB menu) after installing Ubuntu successfully alongside Windows 8(following this tutorial with nomodeset on, I get the following error:- your system is running in legacy mode boot repair done

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• Three Ubuntu 12.04 + Xfce problems

  - by user1708495

  sorry to bother you, but I wanted to set up a minimal Ubuntu 12.04 with minimal Xfce and probably due to my unawareness of several important things, not everything is working properly. -Sometimes when I shutdown I get error message from iwlwifi: It starts with a time out error about sending a power table and after several other errors it says "On demand firmware reload and "Unable to initialize device". And the shutdown stops there so I can only use hard shutdown. -Also when I boot, I often boot to a black screen, but pressing ctrl+alt+f1 gets me to the login prompt (I do not use a login manager). But then I sometimes cannot type. Seems probably more like a X server problem. When it works I only see the Plymouth splash for a very short time or sometimes not at all. -And the last problem is the most annoying one: Frequently Xfce freezes completely. I think ctrl+alt+f1 works sometimes, but other times I also have to use hard shutdown. When it freezes the cpu fan gets louder. I've been using Xbuntu for a while before, but with "real" Linux I am more a beginner, so I hope you forgive my questions Thanks

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• Oracle Open World 2012?????

  - by Liu Maclean(???)

  Oracle Open World 2012?????: ???.. Oracle OpenWorld 2012 sessions????:Search Content Catalog for Oracle OpenWorld 2012 sessions ?????????session??? Open World 2012??: Larry ??Exadata X3 OOW 2012???Exadata X3,?? X3-2 ?Expansion Rack X3-2?X3-8 Exadata X3????:http://www.oracle.com/us/products/database/exadata/overview/index.html  ORACLE EXADATA Database MACHINE X3-8 sheetORACLE EXADATA Database MACHINE X3-2 sheet Exadata X3-2???????: X3-2?compute db node?????????8?Intel Xeon E5-2690??? ??????????12????16?,???33%????? ???96GB???128GB,????256GB ??????????50% X3-2 cell node??????????????Intel Xeon ??????flash card flash card??????4?,??flash card?????????40%? ???X3-2???22.4TB?flash ,??????flash????????????????????,???10????? CPU???6?,????????Intel Xeon model ????????X2-2??,???600GB???????3TB?????? ??Exadata X3-2?????????,??????????1/4?????,1/8????????????????? Exadata X3-8???????: X3-8???X2-8?????,???X3-8??????????X3-2??,??X3-8?????22.4TB?????? ???CEO??  Engineered to Work Together OOW????? Oracle Open World 2012 ????? Open World 2012 ??:http://www.oracle.com/openworld/index.htmlOpen World 2012 ????:http://www.oracle.com/openworld/register/packages/index.html ??: Sept. 30 – Oct. 4, 2012 9?30?? 10?4? ??:Moscone Center, San Francisco (747 Howard Street, San Francisco, California 94103). ?????Mark Hurd??OOW 2012: How big is oow OOW 2012?????????: Focus On Database Technologies Focus On Real Application Clusters Focus On Exadata Focus On Oracle Database Appliance Focus On Oracle Database Application Development Focus On Oracle Database Security Focus On Big Data Focus On Data Warehousing Focus On High Availability Focus On Oracle Enterprise Manager Cloud Control 12c (and Private Cloud) Focus On Oracle Spatial and Graph Focus On Oracle Database Utilities Focus On Oracle Database Upgrade Focus On Oracle Database Private Cloud Focus On .Net Focus On Oracle Database on Windows Focus On Engineered Systems Focus On Sunday Users Forum

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• Data structure for grid with negative indeces

  - by The Secret Imbecile

  Sorry if this is an insultingly obvious concept, but it's something I haven't done before and I've been unable to find any material discussing the best way to approach it. I'm wondering what's the best data structure for holding a 2D grid of unknown size. The grid has integer coordinates (x,y), and will have negative indices in both directions. So, what is the best way to hold this grid? I'm programming in c# currently, so I can't have negative array indices. My initial thought was to have class with 4 separate arrays for (+x,+y),(+x,-y),(-x,+y), and (-x,-y). This seems to be a valid way to implement the grid, but it does seem like I'm over-engineering the solution, and array resizing will be a headache. Another idea was to keep track of the center-point of the array and set that as the topological (0,0), however I would have the issue of having to do a shift to every element of the grid when repeatedly adding to the top-left of the grid, which would be similar to grid resizing though in all likelihood more frequent. Thoughts?

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• libapt-inst1.4:i386 fais to install

  - by user92834

  Today I was notifed of updates, some of them being libapt. So I press "Install Updates", and I got this error: The following packages have unmet dependencies: libapt-inst1.4:i386: Depends: libapt-pkg4.12 (>= 0.8.16~exp12ubuntu10.2) but 0.8.16~exp12ubuntu10.3 is installed Depends: libc6 (>= 2.4) but 2.15-0ubuntu10 is installed Depends: libgcc1 (>= 1:4.1.1) but 1:4.6.3-1ubuntu5 is installed Depends: libstdc++6 (>= 4.4.0) but 4.6.3-1ubuntu5 is installed So I open the terminal and typed sudo apt-get install -f I was shown this: The following extra packages will be installed: libapt-inst1.4 libapt-inst1.4:i386 libapt-pkg4.12:i386 The following NEW packages will be installed: libapt-pkg4.12:i386 The following packages will be upgraded: libapt-inst1.4 libapt-inst1.4:i386 2 upgraded, 1 newly installed, 0 to remove and 18 not upgraded. 1 not fully installed or removed. Need to get 0 B/1,146 kB of archives. After this operation, 3,031 kB of additional disk space will be used. Do you want to continue [Y/n]? I selected "yes". And then: E: Internal Error, No file name for libapt-pkg4.12 Also, when I open the software center, I get a message that the database is broken... I'm using 12.04 64bit But why it wants to install the i386 version? I'm using 64 bit ubuntu...

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• How do I fix the Dash search not being able to find "additional drivers" nor "update"?

  - by Dronz

  I am a fairly new user of Ubuntu, and currently have two 12.04 installations, one of which seems to work ok but I have two problems. The problem I'm asking about in this question, is that the Dash search seems unable to find things, such as "additional drivers" or "update". On my working machine, searching for "additional drivers" there finds an icon for the driver program, but on the problem machine, it gives "Sorry, there is nothing that matches your search." Dash also only shows sections for Recent Files, and Downloads, on that machine. The account I'm running is an admin account. This installation also has a stuck Ubuntu Software Center (it loads and hangs) as in threads like this one. I don't think I've done very much to this computer that could cause a problem. I installed g++ and Wt to do some programming. The biggest change I can remember is uninstalling the newfangled scrollbars with "sudo apt-get remove liboverlay-scrollbar3-0.2-0", but re-installing that module seems to have no effect on these issues. Anyone have any ideas? Both machines have been updated with all recommended updates and say they are up to date.

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• No wubildr, No spaceleft, Boot Error and A previous installation was detected in D:\ubuntu. Please uninstall that before continuing

  - by tdc2bdc

  At first I was downloading Ubuntu 12.10 using Windows Installer, but I cancelled it after just 2-3 minutes and dowloaded 32-Bit ISO (ubuntu-12.10-desktop-i386). Then I created bootable USB Stick (new HP 210 v210 w) using Pendrivelinux (Universal-USB-Installer-1.9.1.4). I Formatted D Drive. (Both by Windows & EaseUS) I've set boot priority correctly. But after getting message "Boot Error", I ran wubi.exe directly from USB drive. Now the message is "A previous installation was detected in D:\ubuntu. Please uninstall that before continuing." I formatted D: again and performed disk check, surface test using EaseUS. It shows no error or bad sectors. Formatted & checked my pendrive too. Directly ran .iso. But same error keeps coming. I found way around above problems, by copying extracted .iso on D:\ and installing Ubuntu using wubi.exe and though on boot it was shown with Windows 7, selecting it caused following error Try hd(0,0): NTFS5 : No wubildr Try hd(0,1): NTFS5 : So, I uninstalled it and Reeinstalled it Now installation fails at around 7mins saying " An error occurred. No space left on device. For more info please see log file " My D: is a 9 GB partition. (99% Free) Ubuntu Site 12.10 says it needs around 4.5 GB. Now Trying it by extendin D: to 10 GB... Got No wubildr. Please help. tdc2bdc

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• Live HTML Preview

  - by netbeanstips

  When you need to edit an HTML document in NetBeans you may find useful this little plugin that adds a Preview tab to HTML editor window. The plugin works with some small issues in NetBeans 7.4 but I recommend using development builds instead. So install the plugin, restart NetBeans and open any HTML document. Notice there's a Preview button in editor's toolbar (see the red rectangle in the picture below). Now split the editor window by dragging the split button at top right corner. You can also use menu View - Split - Vertically.  Then in the bottom split part toggle Preview button. You will get a live preview of your HTML source code. The preview pane will auto-refresh as you edit the HTML code. There are even some handy tools in Preview toolbar, for example you can resize the preview browser to match the screen dimensions of various device types. I know there is full-blown HTML5 support in NetBeans 7.4. But if you need to edit a single document or when you're running Java-only NetBeans distribution this plugin may come handy... Note: The plugin is built on top of embedded WebKit browser which is based on JavaFX WebView component. So there might be some issue when using the plugin on some flavors of Linux.

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• Why is the camera not following the player? [on hold]

  - by Homer_Simpson

  I use the following code to create Parallax Scrolling: http://www.david-gouveia.com/portfolio/2d-camera-with-parallax-scrolling-in-xna/ Parallax Scrolling is working but I don't know how to focus the camera on the player. If the player moves, then the camera doesn't follow the player. The player leaves the screen when I'm moving it. I use the following code(as described in the tutorial), but it's not working: // Updates my camera to lock on the character _camera.LookAt(player.Playerposition); What can I do so that the player is always in the center of the screen/camera? My player class: public class Player { Texture2D Playertex; public Vector2 Playerposition = new Vector2(400, 240); private Game1 game1; public Player(Game1 game) { game1 = game; } public void Load(ContentManager content) { Playertex = content.Load<Texture2D>("8bitmario"); TouchPanel.EnabledGestures = GestureType.HorizontalDrag; } public void Update(GameTime gameTime) { while (TouchPanel.IsGestureAvailable) { GestureSample gs = TouchPanel.ReadGesture(); switch (gs.GestureType) { case GestureType.HorizontalDrag: Playerposition.X += 3f; break; } } } public void Render(SpriteBatch batch) { batch.Draw(Playertex, new Vector2(Playerposition.X - Playertex.Width / 2, Playerposition.Y - Playertex.Height / 2), Color.White); } } In Game1, I update the player and camera class: protected override void Update(GameTime gameTime) { // Updates my character's position player.Update(gameTime); // Updates my camera to lock on the character _camera.LookAt(player.Playerposition); base.Update(gameTime); } protected override void Draw(GameTime gameTime) { GraphicsDevice.Clear(Color.CornflowerBlue); foreach (Layer layer in _layers) layer.Draw(spriteBatch); spriteBatch.Begin(SpriteSortMode.Deferred, null, null, null, null, null, _camera.GetViewMatrix(new Vector2(0.0f, 0.0f))); player.Render(spriteBatch); spriteBatch.End(); base.Draw(gameTime); }

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• 7??OTN?????????????&????

  - by OTN-J Master

  7??OTN?????????????&?????????????9?22?~26???????????????????Oracle OpenWorld???JavaOne?????????(????)????7?19????????????????????????????????????????????? 7??????&?????? ?????? ?6/27?????2? iOS??????? Biz????in ?? 7?5?(?)13:30 ~ 17:30 ?????? ??????(??)??????????????iPhone, iPad????????????????????????????????????iOS???????????????????????iOS????(iPhone, iPad??)????????????????????????????????????????????????????????????????? ??????????????2013 Okinawa 7?6?(?)10:00~17:00 ??????????????????????????????????????????Java?? (14?00?~)6 ???????????????????? Java ??????????? Java EE 7 ???????Java?????????????????????????????????????? Java ?????????Tomcat ?????????????????????? Java EE ????????GlassFish Server Open Source Edition????????????????? ?????!??????????????????????? 7?9?(?)13:00 ~ 17:00 ?????? ??????(??)??????????????????????????????????????????????????????????????????????????????(??)??????????????????Oracle GoldenGate????????????????????????????????????????????????????????????????????? ????! ???????? ?106?-???????????????Export/Import 7?10?(?)18:30 ~20:00 ?????? ????????????(??)18?????????????????????! ???????????106????Export/Import ??????????SQL*Loader??????????????????????????? ??????Oracle Database Appliance??? 7?16?(?)15:30 ~ 17:15 ?????? ??????(??)??????????????????????????????????·?????Oracle Database Appliance???????????????????????????????????????????????? ????~!!??????? ?7? ?Oracle Master Bronze Oracle Database 11g ????????? 7?17?(?)18:30~20:00  ???????? ???? ??????? (??)???23???????????????????????????????? ?????????????????ORACLE MASTER Bronze Oracle Database 11g????????????????????????????????????????????????????ORACLE MASTER Bronze???????? ??????????????????? ?????! ?????????/???????????? 7?19?(?)10:00 ~ 17:30 ?????? ??????(??)?Oracle Application Testing Suite??Web?????????????????????????????????????????????????????????????????????????????????????????????????????????????????Oracle Application Testing Suite????????????????????????????????????????????????????? Oracle Optimized Data Center Summit7?25?(?)13:00 ~ 17:30 ?????????7?26?(?)12:30 ~ 16:30 ??????????IT???????????????????????????????????????????????????????????????????????????????????IT????????????????????????????????·???????????????????????????????????????????????????????????????

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• ?Oracle DB 11gR2 ?????????????????????????????????????!

  - by Yuichi.Hayashi

  Oracle Database????????????????????????????????????????????????????????????????????????·?????????????????????? ?????????/?????????????????????????????????????11g R2??????????????! ????????? Oracle Database?????????????????????????????????????CPU????·???????????????????????????????????????????????? ?????????????????????????????????????????????? ??????????????????????????????(?????????????·???????)????????????????????????????????????????????????????·?????????????????????????????????????????? ?????????????????????????????????????? ????11g R2??????????????????????????????????????????????? ????????????????? ???????????????????????????????Oracle?????????????????????????????????????? ???????????????????CPU????????????????????????????????????????! Oracle Database????????????????????????????? Oracle ?????? - ??(??), ??, ????? Database Smart Flash Cache Oracle Database??Hard Disk Drive(HDD)???????????????????????SQL??????????????????????????????????????????????????·?????·?????100%??????????????????????????????? ?????????????·??????????CPU????·???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????(????·?????·????????)???????·??????????????????????????? HDD????????????????(???)?????????????????????HDD??IO?????????????????????????? ?????????Solid State Drive/Device(SSD)??? SSD?HDD??????????????????????????????????OLTP????????·??????????????????????????????????????????????????????SSD???????????????????????????? ???11g R2???????????SSD???????????Database Smart Flash Cache????????????Database Smart Flash Cache??????·???????????????????????????(Hot Data)?Oracle?????SSD??????????? ????????!?????????SSD????????????????????SSD????????????????????? SSD???????????????????????????????????? Database Smart Flash Cache?????????????????????? SSD???Oracle???: Database Smart Flash Cache - ??(??), ??, ????? ?????????? ? ???????????????/????????????????!? ? ???????????????????????????????????!?

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• SMO ConnectionContext.StatementTimeout setting is ignored

  - by Woody

  I am successfully using Powershell with SMO to backup most databases. However, I have several large databases in which I receive a "timeout" error "System.Data.SqlClient.SqlException: Timeout expired". The timout consistently occurs at 10 minutes. I have tried setting ConnectionContext.StatementTimeout to 0, 6000, and to [System.Int32]::MaxValue. The setting made no difference. I have found a number of Google references which indicate setting it to 0 makes it unlimited. No matter what I try, the timeouts consistently occur at 10 minutes. I even set Remote Query Timeout on the server to 0 (via Studio Manager) to no avail. Below is my SMO connection where I set the time out and the actual backup function. Further below is the output from my script. UPDATE Interestingly enough, I wrote the backup function in C# using VS 2008 and the timeout override does work within that environment. I am in the process of incorporating that C# process into my Powershell Script until I can find out why the timeout override does not work with just Powershell. This is extremely annoying! function New-SMOconnection { Param ($server, $ApplicationName= "PowerShell SMO", [int]$StatementTimeout = 0 ) # Write-Debug "Function: New-SMOconnection $server $connectionname $commandtimeout" if (test-path variable:\conn) { $conn.connectioncontext.disconnect() } else { $conn = New-Object('Microsoft.SqlServer.Management.Smo.Server') $server } $conn.connectioncontext.applicationName = $applicationName $conn.ConnectionContext.StatementTimeout = $StatementTimeout $conn.connectioncontext.Connect() $conn } $smo = New-SMOConnection -server $server if ($smo.connectioncontext.isopen -eq $false) { Throw "Could not connect to server $($server)." } Function Backup-Database { Param([string]$dbname) $db = $smo.Databases.get_Item($dbname) if (!$db) {"Database $dbname was not found"; Return} $sqldir = $smo.Settings.BackupDirectory + "\$($smo.name -replace ("\\", "$"))" $s = ($server.Split('\'))[0] $basedir = "\\$s\" + $($sqldir -replace (":", "$")) $dt = get-date -format yyyyMMdd-HHmmss $dbbk = new-object ('Microsoft.SqlServer.Management.Smo.Backup') $dbbk.Action = 'Database' $dbbk.BackupSetDescription = "Full backup of " + $dbname $dbbk.BackupSetName = $dbname + " Backup" $dbbk.Database = $dbname $dbbk.MediaDescription = "Disk" $target = "$basedir\$dbname\FULL" if (-not(Test-Path $target)) { New-Item $target -ItemType directory | Out-Null} $device = "$sqldir\$dbname\FULL\" + $($server -replace("\\", "$")) + "_" + $dbname + "_FULL_" + $dt + ".bak" $dbbk.Devices.AddDevice($device, 'File') $dbbk.Initialize = $True $dbbk.Incremental = $false $dbbk.LogTruncation = [Microsoft.SqlServer.Management.Smo.BackupTruncateLogType]::Truncate If (!$copyonly) { If ($kill) {$smo.KillAllProcesses($dbname)} $dbbk.SqlBackupAsync($server) } $dbbk } Started SQL backups for server LCFSQLxxx\SQLxxx at 05/06/2010 15:33:16 Statement TimeOut value set to 0. DatabaseName : OperationsManagerDW StartBackupTime : 5/6/2010 3:33:16 PM EndBackupTime : 5/6/2010 3:43:17 PM StartCopyTime : 1/1/0001 12:00:00 AM EndCopyTime : 1/1/0001 12:00:00 AM CopiedFiles : Status : Failed ErrorMessage : System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. The backup or restore was aborted. 10 percent processed. 20 percent processed. 30 percent processed. 40 percent processed. 50 percent processed. 60 percent processed. 70 percent processed. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery(String sqlCommand, ExecutionTypes executionType) Ended backups at 05/06/2010 15:43:23

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• WPF MenuItem.Command binding to ElementName results to System.Windows.Data Error: 4 : Cannot find so

  - by e28Makaveli

  I have the following XAML: <UserControl x:Class="EMS.Controls.Dictionary.TOCControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:vm="clr-namespace:EMS.Controls.Dictionary.Models" xmlns:diagnostics="clr-namespace:System.Diagnostics;assembly=WindowsBase" x:Name="root" > <TreeView x:Name="TOCTreeView" Background="White" Padding="3,5" ContextMenuOpening="TOCTreeView_ContextMenuOpening" ItemsSource="{Binding Children}" BorderBrush="{x:Null}" > <TreeView.ItemTemplate> <HierarchicalDataTemplate ItemsSource="{Binding Path=Children, Mode=OneTime}"> <Grid > <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"/> <!--<ColumnDefinition Width="Auto"/>--> <ColumnDefinition Width="*"/> </Grid.ColumnDefinitions> <!--<CheckBox VerticalAlignment="Center" IsChecked="{Binding IsVisible}"/>--> <ContentPresenter Grid.Column="0" Height="16" Width="20" Content="{Binding LayerRepresentation}" /> <!--<ContentPresenter Grid.Column="1" > <ContentPresenter.Content> Test </ContentPresenter.Content> </ContentPresenter>--> <TextBlock Grid.Column="2" FontWeight="Normal" Text="{Binding Path=Alias, Mode=OneWay}" > <ToolTipService.ToolTip> <TextBlock Text="{Binding Description}" TextWrapping="Wrap"/> </ToolTipService.ToolTip> </TextBlock> </Grid> <HierarchicalDataTemplate.ItemTemplate> <HierarchicalDataTemplate ItemsSource="{Binding Path=Children, Mode=OneTime}"> <!--<DataTemplate>--> <Grid > <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="*"/> </Grid.ColumnDefinitions> <CheckBox VerticalAlignment="Center" IsChecked="{Binding IsVisible}"/> <ContentPresenter Grid.Column="1" Content="{Binding LayerRepresentation, Mode=OneWay}" /> <TextBlock Margin="0,1,0,1" Text="{Binding Path=Alias, Mode=OneWay}" Grid.Column="2"> <ToolTipService.ToolTip> <TextBlock Text="{Binding Description}" TextWrapping="Wrap"/> </ToolTipService.ToolTip> </TextBlock> </Grid> <!--</DataTemplate>--> </HierarchicalDataTemplate> </HierarchicalDataTemplate.ItemTemplate> </HierarchicalDataTemplate> </TreeView.ItemTemplate> <TreeView.ContextMenu> <ContextMenu> <MenuItem Name="miRemove" Header="Remove" Command="{Binding ElementName=root, Path=RemoveItemCmd, diagnostics:PresentationTraceSources.TraceLevel=High}"> <MenuItem.Icon> <Image Source="../images/16x16/Delete.png"/> </MenuItem.Icon> </MenuItem> <MenuItem Header="Properties" Command="{Binding ElementName=root, Path=GetItemPropertiesCmd}"/> </ContextMenu> </TreeView.ContextMenu> </TreeView> </UserControl> Code behind for this UserControl has two ICommand properties with names: RemoveItemCmd and GetItemPropertiesCmd. However, I get System.Windows.Data Error: 4 : Cannot find source for binding with reference 'ElementName=root'. BindingExpression:Path=RemoveItemCmd; DataItem=null; target element is 'MenuItem' (Name='miRemove'); target property is 'Command' (type 'ICommand') System.Windows.Data Error: 4 : Cannot find source for binding with reference 'ElementName=root'. BindingExpression:Path=GetItemPropertiesCmd; DataItem=null; target element is 'MenuItem' (Name=''); target property is 'Command' (type 'ICommand') when UserControl is constructed. Why is this and how do I resolve?

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• Android: How to track down the origin of a InflateException?

  - by Janusz

  While starting my application I get the following warning in Logcat: 04-09 10:28:17.830: WARN/WindowManager(52): Exception when adding starting window 04-09 10:28:17.830: WARN/WindowManager(52): android.view.InflateException: Binary XML file line #24: Error inflating class <unknown> 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.createView(LayoutInflater.java:513) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563) 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.inflate(LayoutInflater.java:385) 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.internal.policy.impl.PhoneWindow.generateLayout(PhoneWindow.java:2153) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.internal.policy.impl.PhoneWindow.installDecor(PhoneWindow.java:2207) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.internal.policy.impl.PhoneWindow.getDecorView(PhoneWindow.java:1395) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.internal.policy.impl.PhoneWindowManager.addStartingWindow(PhoneWindowManager.java:818) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.server.WindowManagerService$H.handleMessage(WindowManagerService.java:8794) 04-09 10:28:17.830: WARN/WindowManager(52): at android.os.Handler.dispatchMessage(Handler.java:99) 04-09 10:28:17.830: WARN/WindowManager(52): at android.os.Looper.loop(Looper.java:123) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.server.WindowManagerService$WMThread.run(WindowManagerService.java:531) 04-09 10:28:17.830: WARN/WindowManager(52): Caused by: java.lang.reflect.InvocationTargetException 04-09 10:28:17.830: WARN/WindowManager(52): at android.widget.FrameLayout.<init>(FrameLayout.java:79) 04-09 10:28:17.830: WARN/WindowManager(52): at java.lang.reflect.Constructor.constructNative(Native Method) 04-09 10:28:17.830: WARN/WindowManager(52): at java.lang.reflect.Constructor.newInstance(Constructor.java:446) 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.createView(LayoutInflater.java:500) 04-09 10:28:17.830: WARN/WindowManager(52): ... 13 more 04-09 10:28:17.830: WARN/WindowManager(52): Caused by: android.content.res.Resources$NotFoundException: Resource is not a Drawable (color or path): TypedValue{t=0x2/d=0x1010059 a=-1} 04-09 10:28:17.830: WARN/WindowManager(52): at android.content.res.Resources.loadDrawable(Resources.java:1677) 04-09 10:28:17.830: WARN/WindowManager(52): at android.content.res.TypedArray.getDrawable(TypedArray.java:548) 04-09 10:28:17.830: WARN/WindowManager(52): at android.widget.FrameLayout.<init>(FrameLayout.java:91) 04-09 10:28:17.830: WARN/WindowManager(52): ... 17 more My Application starts with the following splash screen: <?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:windowBackground="@color/white" android:background="@color/white" android:layout_width="fill_parent" android:layout_height="fill_parent" android:foregroundGravity="center"> <ImageView android:id="@+id/ImageView01" android:layout_width="fill_parent" android:layout_height="fill_parent" android:adjustViewBounds="true" android:scaleType="centerInside" android:src="@drawable/splash" android:layout_gravity="center" /> </ScrollView> Splash is the image that is shown in the splash screen. I have those four folders with for storing drawables in my app: /res/drawable-hdpi /res/drawable-ldpi /res/drawable-mdpi /res/drawable-nodpi the splash image has its own version in the first three of them and is displayed properly. Removing the src property from the ImageView removes the image but not the exception. I'm a little bit lost with where to look for the cause of the exception. I even don't know if this is really an issue in this layout file etc. How would you go about finding the cause for this warning?

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