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• How can I include platform-specific native libraries in the .JAR file using Eclipse?

  - by Martin Wiboe

  Hello all, I am just starting to learn JNI. I have been following a simple example, and I have created a Java app that calls a Hello World method in a native library. I'd like to target Win32 and Linux x86. My library resides in a DLL, and I can call it just fine using LoadLibrary when the DLL is added to the root of my Eclipse project. However, I can't figure out how to get Eclipse to export a runnable JAR that includes the DLL and the .SO file for Linux. So my question is basically; how would you go about creating a project in Eclipse and include several versions of the same native library? Thank you, Martin

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• How do I translate a point from one rect to a point in a scaled rect?

  - by Bill

  I have an image (i) that's been scaled from its original size (rectLarge) to fit a smaller rectangle (rectSmall). Given a point p in rectSmall, how can I translate this to a point in rectLarge. To make this concrete, suppose I have a 20x20 image that's been scaled to a 10x10 rect. The point (1, 1) in the smaller rect should be scaled up to a point in the larger rect (i.e. (2,2)). I'm trying to achieve this with: result.x = point.x * (destRect.size.width / srcRect.size.width ); result.y = point.y * (destRect.size.height / srcRect.size.height); However, the points generated by this code are not correct - they do not map to the appropriate point in the original image. What am I doing wrong?

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• jQuery - How to remove a DOM element BEFORE complete page load

  - by webfac

  Now this may seem like a silly question, but I need to know how to remove a DOM element BEFORE it is displayed to the user. In short, I am using a div that has a background image alerting the user to enable javascript before proceeding. If the user has javascript enabled I am using jQuery to remove the DOM element, in this case $(".check-js") which is the div housing the image. Using the conventional methods to unload DOM objects as follows does not work because it waits for the page load to complete, then removes the element, causing the image to flicker on and off each time the page loads: $(function(){ $(".check-js").css( {display:"none"} ) }) I simply want to remove the div if the user has js enabled, and he must never see this div. Any suggestions and I will be grateful, thanks.

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• WPF: How to get the event when one FrameworkElement comes in contact with other FrameworkElement

  - by Raghav

  I am developing a small application with images and trash box icon on right hand bottom. I have multiple images floating in the main window, and using mouse I can move image from one corner to other corner of window, left, right, top and bottom. I can't figure out how do I catch an event when a image touches and panel (with trash box image), in the right hand corner. Does anybody knows which event or handler to listen? This is not a drag and drop case since my images are floating so no point using drag and drop. Thank you

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• How to write a code Newton Raphson code in R involving integration and Bessel function

  - by Ahmed

  I have want to estimate the parameters of the function which involves Bessel function and integration. However, when i tried to run it, i got a message that "Error in f(x, ...) : could not find function "BesselI" ". I don't know to fix it and would appreciate any related proposal. library(Bessel) library(maxLik) library(miscTools) K<-300 f <- function(theta,lambda,u) {exp(-u*theta)*BesselI(2*sqrt(t*u*theta*lambda),1)/u^0.5} F <- function(theta,lambda){integrate(f,0,K,theta=theta,lambda=lambda)$value} tt<-function(theta,lambda){(sqrt(lambda)*exp(-t*lambda)/(2*sqrt(t*theta)))(theta(2*t*lambda-1)*F(theta,lambda)} loglik <- function(param) { theta <- param[1] lambda <- param[2] ll <-sum(log(tt(theta,lambda))) } t<-c(24,220,340,620,550,559,689,543) res <- maxNR(loglik, start=c(0.001,0.0005),print.level=1,tol = 1e-08) summary(res)

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• How do I fix JavaHL (JNI) Not available after I have changed the logon password on my Mac?

  - by INeedHelp

  I have installed Eclipse 3.5.2 and the plugin Subversion JavaHL Native Library Adapter 1.6.9.2 and this worked without any problems. However, this morning I was forced to change the password to logon to my Mac and since then I get the message that "Subversion native library not available" when I try to save any changes. Can anyone help? I have tried to add this line (-Djava.library.path=/usr/lib/jni) to the eclipse.ini file but this didn´t seem to make any difference. Can anyone help?

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• How do I allow inline images with data urls on .NET 4 without triggering request validation?

  - by Johan Driessen

  I'm using the jQuery jstree plugin (http://jstree.com) in a ASP.NET MVC 2 project on .NET 4 RC. It comes with some stylesheets with inline images with data urls, like this: .tree-checkbox ul { background-image:url(data:image/gif;base64,R0lGODlhAgACAIAAAB4dGf///yH5BAEAAAEALAAAAAACAAIAAAICRF4AOw==); } Now, the url for the background image contains a colon, which .NET 4 thinks is an unsafe character, so I get this error message: A potentially dangerous Request.Path value was detected from the client (:). According to the documentation, I am supposed to be able to prevent this by adding <pages validateRequest="false" /> to my Web.config, but that doesn't seem to help. I have tried adding it to the main Web.config for the application, as well as to a special Web.config in the /config folder, but to no avail. Is there any way to get .NET to allow this?

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• Geometric Shape Recognition & Find Extreme Points in C#

  - by Apoorv Shah

  Hi, Can anyone tell me how to recognize geometric shape using C#? I have geometric shapes like triangle, hexagon, pentagon, diamond, square,parallelogram, rectangle, etc. I have drawn all these shapes using mspaint. i have one picture box, using opendialog i am selecting any of the geometric shapes, into picturebox. I want to identify the shape of the image & extreme points. As it is hand made image, i want to draw a proper image using extreme points. If anyone has some code or some references, then please send it to me... I need it very very urgently. Thanks, Riya

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• Separate log files for each web application and shared libraries with log4j

  - by oo_olo_oo

  I have few web applications run on the Tomcat server. Each application contains its own log4j library copy inside its own war. This allows for separate, flexible logging configuration per application. I also have few shared libraries (kept in Tomcat's shared libraries directory). I would like to have shared library loggers output among with the application (which uses them) loggers output (for example: if application A logs to file a.log, and uses library b.jar, I would like b.jar to log also to the a.log file). The problem is, that the shared libraries are loaded by the shared classloader, which causes that they can't access loggers defined by the applications. Is there any solution for this issue?

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• take images from a cell , into next view controller

  - by richard Stephenson

  hi guys , i asked this question yesterday but it doesnt seem to have asked properly so im trying again in my app im parsing in an xml file , in that file there is a path for an image to download an in my tableview controler i have this to download the image and display it in the cell NSURL *url = [NSURL URLWithString:aStory.picture]; NSData *data = [NSData dataWithContentsOfURL:url]; UIImage *img = [[UIImage alloc] initWithData:data]; im then pushing another view controller on the top and displaying some text in a text view , but i also want to take the image from the cell selected and put that in there too , but everything i try does not work. any ideas on how i can do this Thanks in advance Richard

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• Design Layout/Patterns

  - by wpfwannabe

  I am still fairly new to C# and I am trying to decide the best way to structure a new program. Here is what I want to do and I would like feed back on my idea. Presentation Layer Business Layer (Separate Class Library) Data Layer (Separate Class Library) Model Layer (Separate Class Library) What I am struggling with is if it is ok to have the classes in the Data Layer and Business Layer inherit from the types I define in Model Layer. This way I can extended the types as needed in my Business Layer with any new properties I see fit. I might not use every property from the Model type in my Business Layer class but is that really a big deal? If this isn't clear enough I can try and put together an example.

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• How to log with Ruby and eventmachine?

  - by Justin

  I'm writing an application using Ruby and the Eventmachine library. I really like the idea of non blocking I/O and event driven systems, the problem I'm running into is logging. I'm using Ruby's standard logger library. Its not that logging takes forever but it seems like something that shouldn't block and it does. Is there a library out there somewhere that extends Ruby's standard logger implementation to be non-blocking or should I just call EM::defer for my logging calls? Is there a way I can make eventmachine do this for me already?

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• Which is the better approach in custom pages ?

  - by Mina Samy

  Hi all I want to create a custom new item page for sharepoint but there are two approached that I can use and I want to share your experience in determining which is better. The first: is to create a page in a library then create a C# library project to handle the events of the controls on the page. The second: is to define a feature of the content type of my list and specify the new item form to be my custom form, then create a website containing the custom form and put this site at the layouts folder. for me the first approach is fine but the problem is that a user may access the default sharepoint new item form which I don't want to happen. but I don't like the idea of placing the form in a library on the site. so which is better in your opinion ? thanks

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• Displaying local images in the web browser control

  - by RichardK9

  Hi, I am writing a Windows Forms application and am creating a report for users to view in the webBrowser control. The problem is that it does not seem to display an image which is situated on my local hard drive, it just display the "broken image" red cross symbol. The path of the image is correct and when I view the source code of the generated html in either Firefox or Chrome it works but not in Internet Explorer (which I presume it what is used for this webBrowser control). Any help would be much appreciated. Thanks, Richard.

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• Address extraction from emails in Java

  - by Hans Klock

  I'm looking for an Java open-source library which is able to extract address information from a (German) email (signature). The library should find name street city, city code/postal code email tel/fax address-parser.com is an commercial product, but an free (albeit simple) library would be great. stackoverflow.com/questions/16413/parse-usable-street-address-city-state-zip-from-a-string is asking for something similar, but my problem is broader because the address information is hidden in a complete email. And there isn't a solution either... Any ideas?

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• RMagick returns nil reading JPEG

  - by ysproduction

  When I try to open a JPEG format file in Rails using RMagick, it always return nil with any jpg file. Other file formats open well. $ script/console Loading development environment (Rails 2.3.4) >> require 'RMagick' >> img = Image.read("1.gif").first => 1.gif GIF 230x100 230x100+0+0 PseudoClass 256c 8-bit 2kb >> img = Image.read("1.png").first => 1.png PNG 1280x800 1280x800+0+0 DirectClass 8-bit 156kb >> img = Image.read("1.jpg").first => nil Why this happens?

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• Unable to authenticate in imap server through windows application

  - by Nila

  In C#,I'm using LumiSoft.Net.IMAP.Client library to connect to the imap server and I'm viewing my emails through that class library... I used it for more than 5 months. Now, when I tried to authenticate, it shows the following exception (even though the server is connected..) Server returned:CAPABILITY IMAP4rev1 UNSELECT LITERAL+ IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE I searched for this error. I came to know that the imap server protocol was changed so, this error occurs. Now, Wat I should do for that, whether to change my class library ?? Plz, help me...

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• NSThread vs. NSOperationQueue vs. ??? on the iPhone

  - by kubi

  Currently I'm using NSThread to cache images in another thread. [NSThread detachNewThreadSelector:@selector(cacheImage:) toTarget:self withObject:image]; Alternatively: [self performSelectorInBackground:@selector(cacheImage:) withObject:image]; Alternatively, I can use an NSOperationQueue NSInvocationOperation *invOperation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(cacheImage:) object:image]; NSOperationQueue *opQueue = [[NSOperationQueue alloc] init]; [opQueue addOperation:invOperation]; Is there any reason to switch away from NSThread? GCD is a 4th option when it's released for the iPhone, but unless there's a significant performance gain, I'd rather stick with methods that work in most platforms.

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• Circular Dependency Solution

  - by gfoley

  Our current project has ran into a circular dependency issue. Our business logic assembly is using classes and static methods from our SharedLibrary assembly. The SharedLibrary contains a whole bunch of helper functions, such as a SQL Reader class, Enumerators, Global Variables, Error Handling, Logging and Validation. The SharedLibrary needs access to the Business objects, but the Business objects need access to SharedLibrary. The old developers solved this obvious code smell by replicating the functionality of the business objects in the shared library (very anti-DRY). I've spent a day now trying to read about my options to solve this but i'm hitting a dead end. I'm open to the idea of architecture redesign, but only as a last resort. So how can i have a Shared Helper Library which can access the business objects, with the business objects still accessing the Shared Helper Library?

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• Computer Vision application(+web interface) for face detection and recognition from database

  - by Kush

  My project is a computer vision java application which should implement the following : A web interface through which the form entry+images(for example a student data) will be stored into a database(Mysql) & images into directory common to my java application. Then the data & images can be retrieved from my java Gui application and I can perform the following operations of image processing through OpenCV. Actually,I want to run the face detection on images retrieved and discard the false entries(no proper face). Also the application user/admin can search an image based on text search(By Id) or By another reference image using face recognition. I am well familiar with Java but the problem is that I need a guidance on how to organise it in a stepwise manner(links appreciated).OpenCv,Php and mySql are really messy.I know doing the openCV stuff within java is real overhead but i really want to do it.But If there is any suggestion to do it elseway please guide me.So any kind of help is a ray of hope for me. Thanks.

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• Typical practice for redistributing third party source code with your source code

  - by bglenn

  I'm releasing an application I wrote as an open-source project by creating a public source-code repository. I use a third-party library which is also open-source and freely redistributable. I'm not versioning the third-party library, but should I include it in my repository for the convenience of those cloning the repository or should I expect them to download the third-party library on their own? To be clear, I'm not asking if I should version the third-party code or if I can redistribute it, but whether it is standard practice to include third-party source code as a convenience.

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• Is there a logging facade for the .NET world?

  - by Elijah

  I'm somewhat new to the .NET stack and I was wondering if there is an equivalent to slf4j for the .NET platform. For me, logging to a Facade and being able to swap out logging implementations as needed just makes sense. Furthermore, the wrapper APIs available in slf4j have saved me many times when I needed to use a third-party library that was coded against a single logging framework that I wasn't using. Is there a project out there that acts as a facade between loggers like log4net, nLog and Enterprise Library? Are there wrappers that allow me to shortcut calls to those libraries and direct them to another library? Should I start out an open source project to do this myself? Is this question a duplicate because I don't know the right way to ask? Conversely, is the common way to do this using aspect orient programming?

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• MGTwitterEngine - Using getImageAtURL on iPhone

  - by Andrew Malchow

  Essentially, I'm working on asynchronously downloading images and adding them to specific UITableView cells (twitter profile images using MGTwitterEngine from Matt Gemmell). I've looked at general asynchronous download code and must admit, I'm still too much of a noob to understand it well enough to adapt it to my purposes. Instead, I'm attempting to use Gemmell's included getImageAtUrl method to add the images. I have it working to the point that -imageReceived: receives the images for visible cells, however, I'm stuck as to how to include them into the appropriate cells at that point. - (void)imageReceived:(UIImage *)image forRequest:(NSString *)identifier { NSLog(@"Got an image:%@",image); // What goes here? Or elsewhere? } This method is within my main view controller, I also have a custom cell controller where I'm drawing the cell content using Loren Brichter's fast scrolling code. Any help with this MGTwitterEngine method in particular, or with dynamically adding these images to my table cells would be greatly appreciated.

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• Creating an URL without global variables

  - by dygi

  I have a code like this below, which gives me a $link that equals to: http://mydomain.com/image/photo.JPG if (!empty($_SESSION['item'][$i])) { $path = dirname(__FILE__).'/image/'.basename($_SESSION['item'][$i]); if (move_uploaded_file($_SESSION['item'][$i], $path)) global $url; if ( $url ) { $link = $url.'/image/'.basename($_SESSION['item'][$i]); echo "<td><img src='" . $link . "' width='50' height='50' /></td>"; } } I wonder, how should I properly ommit using global variable here to achieve the same result.

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• Tracking object entries when "playing" a Windows Enhanced Metafile

  - by lzcd

  One of my current projects requires that I work out what colours are being used in an EMF file. I have been able to successfully whip up a file parser in C# that notes all references to colours... but haven't had any luck tracking which objects are in use across the entire file so I can apart colours that are referenced from colours that are used to paint on screen. The older style WMF files are easy as the object library starts at zero and one can simply track each "Create Object" style command... but EMF files are proving to be trickier as there seems to be preexisting entries in the library (if the "Select Object" commands I'm seeing are to be believed). Would anyone be able to either enlighten me on how to track objects in the library correctly with EMF files... or suggest an easier alternative to work out which colours are actually being used in the file (as opposed to just being defined)?

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