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  • gnuplot: x11 terminal in "interactive mode" while calling gnuplot from shell

    - by janoliver
    Hey there, I want to call gnuplot with a shell command, all the commands are stored in, let's say, "load.gp". If I start the gnuplot shell and type "load 'load.gp'" I can change the viewpoint by dragging the splot with the mouse around. The Problem is, I can't figure out how to reach that without being in the gnuplot shell. echo "load 'load.gp'" | gnuplot -persist or gnuplot -persist 'load.gp' won't work. Can somebody help me? Thanks, Jan

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  • Using MongoDB with Ruby On Rails and the Mongomapper plugin

    - by Micke
    Hello, i am currently trying to learn Ruby On Rails as i am a long-time PHP developer so i am building my own community like page. I have came pritty far and have made the user models and suchs using MySQL. But then i heard of MongoDB and looked in to it a little bit more and i find it kinda nice. So i have set it up and i am using mongomapper for the connection between rails and MongoDB. And i am now using it for the News page on the site. I also have a profile page for every User which includes their own guestbook so other users can come to their profile and write a little message to them. My thought now is to change the User models from using MySQL to start using MongoDB. I can start by showing how the models for each User is set up. The user model: class User < ActiveRecord::Base has_one :guestbook, :class_name => "User::Guestbook" The Guestbook model model: class User::Guestbook < ActiveRecord::Base belongs_to :user has_many :posts, :class_name => "User::Guestbook::Posts", :foreign_key => "user_id" And then the Guestbook posts model: class User::Guestbook::Posts < ActiveRecord::Base belongs_to :guestbook, :class_name => "User::Guestbook" I have divided it like this for my own convenience but now when i am going to try to migrate to MongoDB i dont know how to make the tables. I would like to have one table for each user and in that table a "column" for all the guestbook entries since MongoDB can have a EmbeddedDocument. I would like to do this so i just have one Table for each user and not like now when i have three tables just to be able to have a guestbook. So my thought is to have it like this: The user model: class User include MongoMapper::Document one :guestbook, :class_name => "User::Guestbook" The Guestbook model model: class User::Guestbook include MongoMapper::EmbeddedDocument belongs_to :user many :posts, :class_name => "User::Guestbook::Posts", :foreign_key => "user_id" And then the Guestbook posts model: class User::Guestbook::Posts include MongoMapper::EmbeddedDocument belongs_to :guestbook, :class_name => "User::Guestbook" But then i can think of one problem.. That when i just want to fetch the user information like a nickname and a birthdate then it will have to fetch all the users guestbook posts. And if each user has like a thousand posts in the guestbook it will get really much to fetch for the system. Or am i wrong? Do you think i should do it any other way? Thanks in advance and sorry if i am hard to understand but i am not so educated in the english language :)

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  • Image sliding control using wpf

    - by Geetha
    Hi All, I want to create a slider with images like youtube(floating images with left and right navigation button). How i have to start. i am new to wpf. for example: http://blog.wpfwonderland.com/page/4/ Geetha.

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  • Neural Networks in C# using NeuronDotNet

    - by kingrichard2005
    Hello, I'm testing the NeuronDotNet library for a class assignment using C#. I have a very simple console application that I'm using to test some of the code snippets provided in the manual fro the library, the goal of the assignment is to teach the program how to distinguish between random points in a square which may or may not be within a circle that is also inside the square. So basically, which points inside the square are also inside the circle. Here is what I have so far: namespace _469_A7 { class Program { static void Main(string[] args) { //Initlaize the backpropogation network LinearLayer inputLayer = new LinearLayer(2); SigmoidLayer hiddenLayer = new SigmoidLayer(8); SigmoidLayer outputLayer = new SigmoidLayer(2); new BackpropagationConnector(inputLayer, hiddenLayer); new BackpropagationConnector(hiddenLayer, outputLayer); BackpropagationNetwork network = new BackpropagationNetwork(inputLayer, outputLayer); //Generate a training set for the ANN TrainingSet trainingSet = new TrainingSet(2, 2); //TEST: Generate random set of points and add to training set, //for testing purposes start with 10 samples; Point p; Program program = new Program(); //Used to access randdouble function Random rand = new Random(); for(int i = 0; i < 10; i++) { //These points will be within the circle radius Type A if(rand.NextDouble() > 0.5) { p = new Point(rand.NextDouble(), rand.NextDouble()); trainingSet.Add(new TrainingSample(new double[2] { p.getX(), p.getY() }, new double[2] { 1, 0 })); continue; } //These points will either be on the border or outside the circle Type B p = new Point(program.randdouble(1.0, 4.0), program.randdouble(1.0, 4.0)); trainingSet.Add(new TrainingSample(new double[2] { p.getX(), p.getY() }, new double[2] { 0, 1 })); } //Start network learning network.Learn(trainingSet, 100); //Stop network learning //network.StopLearning(); } //generates a psuedo-random double between min and max public double randdouble(double min, double max) { Random rand = new Random(); if (min > max) { return rand.NextDouble() * (min - max) + max; } else { return rand.NextDouble() * (max - min) + min; } } } //Class defines a point in X/Y coordinates public class Point { private double X; private double Y; public Point(double xVal, double yVal) { this.X = xVal; this.Y = yVal; } public double getX() { return X; } public double getY() { return Y; } } } This is basically all that I need, the only question I have is how to handle output?? More specifically, I need to output the value of the "step size" and the momentum, although it would be nice to output other information as well. Anyone with experience using NeuronDotNet, your input is appreciated.

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  • Check if a Mail folder exists using Zend Mail

    - by Ali
    How can I check if an email folder exists using Zend_Mail_Storage_Imap, theres a createFOlder, renameFOlder and removeFolder and also a getFOlders but not exactly any fixed method to query if a certain mail folder exists? The GetFOlders returns a humonogous tree of folders to start with.

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  • Managing timezone in php with ics date/time format

    - by John
    Ok, I'm using an ICS parser utility to parse google calendar ICS files. It works great, except google is feeding me the times of the events at UCT.. so I need to subtract 5 hours now, and 6 hours when daylight savings happens. To get the start time I'm using: $timestart = date("g:iA",strtotime(substr($event['DTSTART'], 9, -3))); //$event['DTSTART'] feeds me back the date in ICS format: 20100406T200000Z So any suggestions how to handle timezone and daylight savings time? Thanks in advance

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  • The Command "File.BatchNewTeamProject" is not available in VSTS 2010

    - by TS
    Hi, I am trying to automate the creation of team projects using a command built into VS 2010 called File.BatchNewTeamProject using a project settings file as an argument, and executing this as a process silently in the background from my c# win app. I am aware of a requirement that Team Explorer has to be open and connected to TFS before this command can run, however, when I start a process with devenv.exe, a fresh instance of visual studio pops up with Team Explorer not connected by default. How can I solve this problem?

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  • Java applets vs Silverlight vs Flash (Flex)

    - by Peter Gfader
    Everybody talks about Silverlight and Flash and Flex and how cool etc... Java applets are very similar to Silverlight and Flex, but Java applets exist since 1995. What is the reason we don't have any cool Java applet applications around? My guesses so far: start up time of Java applet, restricted network connectivity, lack of dev tools, ... Are there any cool Java applets around? Please post links

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  • Parallel programming patterns for C#?

    - by VoidDweller
    With Intel's launch of a Hexa-Core processor for the desktop, it looks like we can no longer wait for Microsoft to make many-core programming "easy". I just order a copy of Joe Duffy's book Concurrent Programming on Windows. This looks like a great place to start, though, I am hoping some of you who have been targeting multi/many core systems would point me to some good resources that have or would have helped on your projects?

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  • App engine index building stalled stuck

    - by Alexander
    Hi, I am having a problem with indexes building in my App Engine application. There are only about 200 entities in the indexes that are being built, and the process has now been running or over 24 hours. My application name is romanceapp. Is there any way that I can re-start or clear the indexes that are being built? Thank you and kind regards Alexander M.

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  • how to create registry key through java program?

    - by Arivu2020
    I want to create registry key through java program to add the jar file in the start up. RegistryKey r=new RegistryKey(RootKey.HKEY_CURRENT_USER,"Software/Microsoft/Windows/CurrentVersion/Run"); r.createSubkey("sample"); But i got the error: Exception in thread "main" java.lang.UnsatisfiedLinkError: ca.beq.util.win32.registry.RegistryKey.testInitialized()V at ca.beq.util.win32.registry.RegistryKey.testInitialized(Native Method) How can i do that? Thanks

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  • Autoconf/Automake "configure.ac:2: option `-Wall' not recognized"

    - by Atmocreations
    Hello I'm trying to start with autoconf / automake for a new project. To get started, I'm reading "Using GNU Autotools" and trying to build the Hello-World-Tutorial. The required files from page 96 (real Page=105 because it's a LaTeX-Presentation) configure.ac, Makefile.am and src/Makefile.am look exactly as stated in the document. After that I tried: $ autoreconf --install configure.ac:2: option `-Wall' not recognized autoreconf: automake failed with exit status: 1 Well, it seems that automake doesn't like the second line: AM_INIT_AUTOMAKE([-Wall -Werror foreign]) Therefore I executed: $ autoreconf -v --install autoreconf: Entering directory `.' autoreconf: configure.ac: not using Gettext autoreconf: running: aclocal autoreconf: configure.ac: tracing autoreconf: configure.ac: not using Libtool autoreconf: running: /usr/bin/autoconf autoreconf: running: /usr/bin/autoheader autoreconf: running: automake --add-missing --copy --no-force configure.ac:2: option `-Wall' not recognized autoreconf: automake failed with exit status: 1 You can see easily that autoconf runs automake --add-missing --copy --no-force which I repeated with the verbose-option. And it only returns this: $ automake -v --add-missing --copy --no-force automake: thread 0: reading autoconf --trace=_LT_AC_TAGCONFIG:\$f:\$l::\$d::\$n::\${::}% --trace=AM_ENABLE_MULTILIB:\$f:\$l::\$d::\$n::\${::}% --trace=AM_SILENT_RULES:\$f:\$l::\$d::\$n::\${::}% --trace=AC_INIT:\$f:\$l::\$d::\$n::\${::}% --trace=_AM_COND_IF:\$f:\$l::\$d::\$n::\${::}% --trace=AC_CONFIG_FILES:\$f:\$l::\$d::\$n::\${::}% --trace=AC_CANONICAL_TARGET:\$f:\$l::\$d::\$n::\${::}% --trace=AC_CONFIG_LIBOBJ_DIR:\$f:\$l::\$d::\$n::\${::}% --trace=AC_FC_SRCEXT:\$f:\$l::\$d::\$n::\${::}% --trace=AC_CANONICAL_HOST:\$f:\$l::\$d::\$n::\${::}% --trace=AM_GNU_GETTEXT:\$f:\$l::\$d::\$n::\${::}% --trace=AC_LIBSOURCE:\$f:\$l::\$d::\$n::\${::}% --trace=AM_INIT_AUTOMAKE:\$f:\$l::\$d::\$n::\${::}% --trace=AC_CANONICAL_BUILD:\$f:\$l::\$d::\$n::\${::}% --trace=AM_AUTOMAKE_VERSION:\$f:\$l::\$d::\$n::\${::}% --trace=_AM_SUBST_NOTMAKE:\$f:\$l::\$d::\$n::\${::}% --trace=AC_CONFIG_AUX_DIR:\$f:\$l::\$d::\$n::\${::}% --trace=sinclude:\$f:\$l::\$d::\$n::\${::}% --trace=AM_PROG_CC_C_O:\$f:\$l::\$d::\$n::\${::}% --trace=AC_CONFIG_LINKS:\$f:\$l::\$d::\$n::\${::}% --trace=AC_REQUIRE_AUX_FILE:\$f:\$l::\$d::\$n::\${::}% --trace=m4_sinclude:\$f:\$l::\$d::\$n::\${::}% --trace=LT_SUPPORTED_TAG:\$f:\$l::\$d::\$n::\${::}% --trace=AM_CONDITIONAL:\$f:\$l::\$d::\$n::\${::}% --trace=AC_CONFIG_HEADERS:\$f:\$l::\$d::\$n::\${::}% --trace=AM_MAINTAINER_MODE:\$f:\$l::\$d::\$n::\${::}% --trace=m4_include:\$f:\$l::\$d::\$n::\${::}% --trace=_AM_COND_ELSE:\$f:\$l::\$d::\$n::\${::}% --trace=AM_GNU_GETTEXT_INTL_SUBDIR:\$f:\$l::\$d::\$n::\${::}% --trace=_AM_COND_ENDIF:\$f:\$l::\$d::\$n::\${::}% --trace=AC_SUBST_TRACE:\$f:\$l::\$d::\$n::\${::}% configure.ac:2: option `-Wall' not recognized Anybody an idea why this doesn't work? My impression is that none of my files are wrong... I would like to use it for compiling C++ code for Linux and Windows (using mingw32-g++). Do you know any base where to start and what I have to pay attention for? I'm on Ubuntu 9.10 64bit. Any help is appreciated. Thanks in advance, regards

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  • MSDOS "Hello World" EXE

    - by divinci
    Hi all, An open question - but I cant find anywhere to start!! I want to compile a "Hello World" MS-DOS exe. Not a program that runs in 16bit mode, or in MSDos mode on top of Windows OSs. A HELOWRLD.EXE that I can run on my MSDOS box. Thanksyou!

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  • Silverlight4 disable textbox required validation when form loads with initial value (null)

    - by Jay
    I am trying to implement validation using IDataErrorInfo or INotifyDataErrorInfo but either way I am struggling to make it work only once user start entering data or clicking save button. Since I am using MVVM, I am setting my view's datacontext to ViewModel and my ViewModel is implementing IDataErrorInfo / INotifyDataErrorInfo. I need to make sure validation happens but not when form loads up. Anyone has got any suggestion how I can implement? Thanks

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  • Save gcc compile status to a text file for Java

    - by JohnBore
    I'm making a C Assessment Program through Java, which has a bunch of programming questions for C, and it lets the user input an answer in the form of C code, and then press a "Compile" button, which is linked to a bat file that runs the user input code through gcc. I've got the input and compiling working, but I need to get the output from the compiler and get that to print textarea within the program. I can get a simple "Hello, world" compiling, but I'm having trouble getting programs that require a user input with scanf, for example, to be printed. else if(e.getSource().equals(compile)){ if(questionNumber<1){ JOptionPane.showMessageDialog(programFrame, "Please start the assessment", "Compile Error", JOptionPane.ERROR_MESSAGE); } else{ FileOutputStream fileWrite; try { fileWrite = new FileOutputStream("demo/demo.c"); new PrintStream(fileWrite).println(input.getText());//saves what the user has entered in to a C source file fileWrite.close(); @SuppressWarnings("unused") Process process = Runtime.getRuntime().exec("cmd /c compile.bat");//runs the batch file to compile the source file compileCode(); try{ fileStream = new FileInputStream("demo/output.txt"); inputStream = new DataInputStream(fileStream); bufferRead = new BufferedReader(new InputStreamReader(inputStream)); while((stringLine = bufferRead.readLine())!=null){ compiled.append(stringLine); compiled.append("\n"); } inputStream.close(); } catch(IOException exc){ System.err.println("Unable to read file"); System.exit(-1); } } catch (IOException exc) { JOptionPane.showMessageDialog(programFrame, "Demo file not found", "File Error", JOptionPane.ERROR_MESSAGE); } } This is the actionPerformed method for the "Compile" button, the compileCode() is the JFrame that displays the output and "compiled" is the textArea for the output. My batch file is: C: cd dev-cpp\bin gcc.exe H:\workspace\QuestionProgram\demo\demo.c -o demo > H:\workspace\QuestionProgram\demo\compilestatus.txt demo > H:\workspace\QuestionProgram\demo\output.txt I'm not sure how I can do it, so the frame is created for the output of the code if the code requires a user input as the command prompt doesn't open without adding "START" to .exec(), but then the frame appears before the program has finished running. Also, how would I get the output of the compiler if the compile fails because of an error? The way I've got it in my batch file at the moment doesn't put anything in a text file if it fails.

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  • Add a "mapview" in a webOS app

    - by thom
    Hi, I'm not familiar yet with WebOS dev (just started this weekend) but I didn't find any "MapView" widget in the reference library. Is there any way to include a WebView in my app or do I have to start the map app from my app ? Thanx.

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  • Index page in Magento is way too slow, what can I do?

    - by Jonathan
    Weirdly, the index page of my magento commerce is very slow, while when you navigate the products, brands, searchs etc is very fast, but everytime you click on the banner to go for home or enter the website, it take ages to load I wonder what can I do about this? I don't know where to start, since I am new at magento. I thought I could go on and read the code, but that would take ages too, since magento is very big. Maybe I can analyze it somehow? Thanks, Jonathan

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  • java.lang.Error: "Not enough storage is available to process this command" when generating images

    - by jhericks
    I am running a web application on BEA Weblogic 9.2. Until recently, we were using JDK 1.5.0_04, with JAI 1.1.2_01 and Image IO 1.1. In some circumstances (we never figured out exactly why), when we were processing large images (but not that large - a few MB), the JVM would crash without any error message or stack trace or anything. This didn't happen much in production, but enough to be a nuisance and eventually we were able to reproduce it. We decided to switch to JRockit90 1.5.0_04 and we were no longer able to reproduce the problem in our test environment, so we thought we had it licked. Now, however, after the application server has been up for a while, we start getting the error message, "Not enough storage is available to process this command" during image operations. For example: java.lang.Error: Error starting thread: Not enough storage is available to process this command. at java.lang.Thread.start()V(Unknown Source) at sun.awt.image.ImageFetcher$1.run(ImageFetcher.java:279) at sun.awt.image.ImageFetcher.createFetchers(ImageFetcher.java:272) at sun.awt.image.ImageFetcher.add(ImageFetcher.java:55) at sun.awt.image.InputStreamImageSource.startProduction(InputStreamImageSource.java:149) at sun.awt.image.InputStreamImageSource.addConsumer(InputStreamImageSource.java:106) at sun.awt.image.InputStreamImageSource.startProduction(InputStreamImageSource.java:144) at sun.awt.image.ImageRepresentation.startProduction(ImageRepresentation.java:647) at sun.awt.image.ImageRepresentation.prepare(ImageRepresentation.java:684) at sun.awt.SunToolkit.prepareImage(SunToolkit.java:734) at java.awt.Component.prepareImage(Component.java:3073) at java.awt.ImageMediaEntry.startLoad(MediaTracker.java:906) at java.awt.MediaEntry.getStatus(MediaTracker.java:851) at java.awt.ImageMediaEntry.getStatus(MediaTracker.java:902) at java.awt.MediaTracker.statusAll(MediaTracker.java:454) at java.awt.MediaTracker.waitForAll(MediaTracker.java:405) at java.awt.MediaTracker.waitForAll(MediaTracker.java:375) at SfxNET.System.Drawing.ImageLoader.loadImage(Ljava.awt.Image;)Ljava.awt.image.BufferedImage;(Unknown Source) at SfxNET.System.Drawing.ImageLoader.loadImage(Ljava.net.URL;)Ljava.awt.image.BufferedImage;(Unknown Source) at Resources.Tools.Commands.W$zw(Ljava.lang.ClassLoader;)V(Unknown Source) at Resources.Tools.Commands.getContents()[[Ljava.lang.Object;(Unknown Source) at SfxNET.sfxUtils.SfxResourceBundle.handleGetObject(Ljava.lang.String;)Ljava.lang.Object;(Unknown Source) at java.util.ResourceBundle.getObject(ResourceBundle.java:320) at SoftwareFX.internal.ChartFX.wxvw.yxWW(Ljava.lang.String;Z)Ljava.lang.Object;(Unknown Source) at SoftwareFX.internal.ChartFX.wxvw.vxWW(Ljava.lang.String;)Ljava.lang.Object;(Unknown Source) at SoftwareFX.internal.ChartFX.CommandBar.YWww(LSoftwareFX.internal.ChartFX.wxvw;IIII)V(Unknown Source) at SoftwareFX.internal.ChartFX.Internet.Server.xxvw.YzzW(LSoftwareFX.internal.ChartFX.Internet.Server.ChartCore;Z)LSoftwareFX.internal.ChartFX.CommandBar;(Unknown Source) at SoftwareFX.internal.ChartFX.Internet.Server.xxvw.XzzW(LSoftwareFX.internal.ChartFX.Internet.Server.ChartCore;)V(Unknown Source) at SoftwareFX.internal.ChartFX.Internet.Server.ChartCore.OnDeserialization(Ljava.lang.Object;)V(Unknown Source) at SoftwareFX.internal.ChartFX.Internet.Server.ChartCore.Zvvz(LSoftwareFX.internal.ChartFX.Base.wzzy;)V(Unknown Source) Has anyone seen something like this before? Any clue what might be happening?

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  • Does Watir work under ruby 1.9.1?

    - by Horace Ho
    Here is the .rb program: require 'watir' b = Watir::Browser.new the 2nd line will trigger a ""The program can't start because msvcrt-ruby18.dll is missing from your computer!" error. I am using 1.9.1p378 on win32 ruby 1.9.1p378 (2010-01-10 revision 26273) [i386-mingw32] How can I fix this? Thanks for your attention.

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  • streaming desktop to flash player

    - by Erwing
    hi I would like to stream my desktop screen (or one of the application which i select) to flash player i woul like to publish my desktop in web i have wowze media player to multicast it but i have to create stream and give it to the wowze do you have any idea how to start what would be the best for it can you recomend something?

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  • beautifulsoup and mechanize to get ajax call result

    - by nabizan
    hi im building a scraper using python 2.5 and beautifulsoup but im stuble upon a problem ... part of the web page is generating after user click on some button, whitch start an ajax request by calling specific javacsript function using proper parameters is there a way to simulate user interaction and get this result? i come across a mechanize module but it seems to me that this is mostly used to work with forms ... i would appreciate any links or some code samples thanks

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