Preferences -&gt; Run/Debug -&gt; Perspectives -&gt; Open the associated perspective when application suspends

# 1
Other option is you can also `reset` your `perspective` `preference` from `windows` -&gt; `reset perspective` and then `run/debug` then a `dialog` asking to switch to `debug perspective` when every time you debug the application and say check `NO`.

# 2 
Goto `Windows` - &gt; `preference` -&gt; `General` -&gt;`perspectives` -&gt; make default your perspective or press `reset to default` to forget the previous settings.



@skaffman
in addition to this you may also need to set the Prefrences&gt; Run/Debug&gt; Perspectives&gt; &quot;Open associated perspective when an application suspends&quot; to Prompt or never.


Go to Window→perspective→close perspective.

What worked for me was to click on &quot;Java&quot; perspective icon in upper right corner, then under Window menu select Perspective, then Reset Perspective..., it will say &quot;Reset the Java perspective to its default?&quot;, then click on &quot;Reset Perspective&quot;.

I have a `UIButton` with text &quot;Explore the app&quot; and `UIImage` (&gt;)
In `Interface Builder` it looks like:
 
    [ (&gt;) Explore the app ]

But I need to place this `UIImage` AFTER the text:
 
    [ Explore the app (&gt;) ]

How can I move the `UIImage` to the right?

iPhone UIButton - image position

How will it change the code, e.g. function calls?

What is the -fPIE option for position-independent executables in gcc and ld?

Is there a way to turn off this mode?  I must have clicked it by accident, and now it&#39;s getting really annoying.  

I&#39;ve looked in the preferences and perspectives pane, but can&#39;t see anything.  Does anyone know where this option is configured?



How do I turn off &quot;Automatically Switch to Debug Perspective&quot; mode in eclipse?

<p>Is there a way to turn off this mode?  I must have clicked it by accident, and now it's getting really annoying.</p>
<p>I've looked in the preferences and perspectives pane, but can't see anything.  Does anyone know where this option is configured?</p>


I have a workspace with a bunch of java projects. If I go to `File-&gt;Refresh`, it doesn&#39;t really refresh anything (perhaps the currently selected project). How do I get eclipse to refresh *all* of the projects?

Eclipse: How do I refresh an entire workspace? F5 doesn&#39;t do it

In eclipse preferences

    Windows &gt; Preferences &gt; Java &gt; Junit

![alt text][1]

What effect does the &quot;Add &#39;-ea&#39; to VM args ....&quot; checkbox option actually have on the new junit launch config?


  [1]: https://1.bp.blogspot.com/_UjH7scA_Bek/S6yamSn9pGI/AAAAAAAABhE/znqFy0yrZgc/s320/eclipse-junit-ea-jvm-args.png

Eclipse Junit &#39;-ea&#39; VM Option

I have an Eclipse setup with m2eclipse and subversive. I have imported a maven2 project from svn. But I get the error message that a whole bunch of artifacts are missing (for instance: Missing artifact org.springframework:spring-test:jar:3.0.1.RELEASE:test). 

If I look in my repository I see the jar files there but they have an extra extension .lastUpdated. Why is maven appending .lastUpdated to the jars? And more importantly: how can I fix this? 

There is no mention of the type lastUpdated in my POMs. 

Maven downloads have .lastUpdated as extension

Assuming you&#39;re already using the [m2eclipse plugin][1], what can you do when it doesn&#39;t update the dependencies to the latest in your repo?

For example, on the command line, you can just add the `-U` flag as in

    mvn clean install -U 

…to force the dependencies to be updated. Is there something like this within Eclipse? (It doesn&#39;t always seem to pick up the latest updates.)

  [1]: http://m2eclipse.sonatype.org/

How to update maven repository in Eclipse?

I am writing a program in Java that takes a custom XML file and parses it. I&#39;m using the XML file for storage. I am getting the following error in Eclipse.

    [Fatal Error] :1:1: Content is not allowed in prolog.
    org.xml.sax.SAXParseException: Content is not allowed in prolog.
    	at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:239)
    	at     com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:283  )
    	at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:208)
    	at me.ericso.psusoc.RequirementSatisfier.parseXML(RequirementSatisfier.java:61)
    	at me.ericso.psusoc.RequirementSatisfier.getCourses(RequirementSatisfier.java:35)
    	at     me.ericso.psusoc.programs.RequirementSatisfierProgram.main(RequirementSatisfierProgram.java:23  )

The beginning of the XML file is included:

    &lt;?xml version=&quot;1.0&quot; ?&gt;
    &lt;PSU&gt;
	     &lt;Major id=&quot;IST&quot;&gt;
		    &lt;name&gt;Information Science and Technology&lt;/name&gt;
    		&lt;degree&gt;B.S.&lt;/degree&gt;
    		&lt;option&gt; Information Systems: Design and Development Option&lt;/option&gt;
    		&lt;requirements&gt;
    			&lt;firstlevel type=&quot;General_Education&quot; credits=&quot;45&quot;&gt;
    				&lt;component type=&quot;Writing_Speaking&quot;&gt;GWS&lt;/component&gt;
    				&lt;component type=&quot;Quantification&quot;&gt;GQ&lt;/component&gt;

The program is able to read in the XML file but when I call &lt;code&gt;DocumentBuilder.parse(XMLFile)&lt;/code&gt; to get a parsed &lt;code&gt;org.w3c.dom.Document&lt;/code&gt;, I get the error above.

It doesn&#39;t seem to me that I have invalid content in the prolog of my XML file. I can&#39;t figure out what is wrong. Please help. Thanks.

Java parsing XML document gives &quot;Content not allowed in prolog.&quot; error

We have a bug in our application that does not occur every time and therefore we don&#39;t know its &quot;logic&quot;. I don&#39;t even get it reproduced in 100 times today.

Disclaimer: This bug exists and I&#39;ve seen it. It&#39;s not a [pebkac][1] or something similar.

What are common hints to reproduce this kind of bug?


  [1]: http://en.wikipedia.org/wiki/User_error

How do you reproduce bugs that occur sporadically?

I am attempting to debug an application on a [Motorola Droid][1], but I am having some difficulty connecting to the device via USB. My development server is a Windows 7 64-bit VM running in [Hyper-V][2], and so I cannot connect directly via USB in the guest or from the host.

I installed a couple of different USB-over-TCP solutions, but the connection appears to have issues since the [ADB][3] monitor reports &quot;devicemonitor failed to start monitoring&quot; repeatedly. Is there a way to connect directly from the client on the development machine to the daemon on the device using the network instead of the USB connection or possibly another viable options?

  [1]: https://en.wikipedia.org/wiki/Motorola_Droid
  [2]: http://en.wikipedia.org/wiki/Hyper-V
  [3]: http://en.wikipedia.org/wiki/Android_Debug_Bridge


How can I connect to Android with ADB over TCP?

My main solution is using code from a utility class library, that I wrote myself, but is a part from another solution. How can I set a breakpoint in the referenced DLL file?


How can I set a breakpoint in referenced code in Visual Studio?

I&#39;ve been using using F5 (Start Debugging) for years to build the code (if its out of date), and then debug. This was working on VS 2010 also, however today it just start debugging without a build. Say I do a clean on the project, and then hit F5 instead of building it so it can run it throws an error message saying that the exe doesn&#39;t exist to run. How do I make it build first? What could have changed?

Visual Studio 2010 isn&#39;t building before a run when there are code changes

I&#39;m developing C extensions from python and I obtain some segfaults (inevitable during the development...).

I&#39;m searching for a way to display at which line of code the segfault happens (an idea is like tracing every single line of code), how can I do that?

python tracing a segmentation fault

I&#39;m trying to do a [perspective transformation][1] of a set of points in order to achieve a [deskewing][2] effect:

&lt;img src=&quot;http://nuigroup.com/?ACT=28&amp;fid=27&amp;aid=1892_H6eNAaign4Mrnn30Au8d&quot; width=&quot;300&quot; height=&quot;100&quot;&gt;

I&#39;m using the image below for tests, and the **green** rectangle display the area of interest.

&lt;img src=&quot;http://i.stack.imgur.com/r8fmh.jpg&quot; width=&quot;300&quot; height=&quot;350&quot;&gt;

I was wondering if it&#39;s possible to achieve the effect I&#39;m hoping for using a simple combination of `cv::getPerspectiveTransform` and `cv::warpPerspective`. I&#39;m sharing the source code I&#39;ve written so far, but it doesn&#39;t work. This is the resulting image:

&lt;img src=&quot;http://i.stack.imgur.com/206aG.jpg&quot; width=&quot;100&quot; height=&quot;130&quot;&gt;

So there is a `vector&lt;cv::Point&gt;` that **defines the region of interest**, but the points are **not stored in any particular order** inside the vector, and that&#39;s something I can&#39;t change in the detection procedure. Anyway, **later**, the points in the vector are used to define a `RotatedRect`, which in turn is used to assemble `cv::Point2f src_vertices[4];`, one of the variables required by `cv::getPerspectiveTransform()`.

My understanding about **vertices** and how they are organized **might be one of the issues**. I also think that using a **`RotatedRect` is not the best idea** to store the original points of the ROI, since the **coordinates will change** a little bit to fit into the rotated rectangle, and **that&#39;s not very cool**.

    #include &lt;cv.h&gt;
    #include &lt;highgui.h&gt;
    #include &lt;iostream&gt;
    
    using namespace std;
    using namespace cv;
    
    int main(int argc, char* argv[])
    {
    	cv::Mat src = cv::imread(argv[1], 1);
    
        // After some magical procedure, these are points detect that represent 
        // the corners of the paper in the picture: 
        // [408, 69] [72, 2186] [1584, 2426] [1912, 291]
        vector&lt;Point&gt; not_a_rect_shape;
        not_a_rect_shape.push_back(Point(408, 69));
        not_a_rect_shape.push_back(Point(72, 2186));
        not_a_rect_shape.push_back(Point(1584, 2426));
        not_a_rect_shape.push_back(Point(1912, 291));
    
        // For debugging purposes, draw green lines connecting those points 
        // and save it on disk
        const Point* point = &amp;not_a_rect_shape[0];
        int n = (int)not_a_rect_shape.size();
        Mat draw = src.clone();
        polylines(draw, &amp;point, &amp;n, 1, true, Scalar(0, 255, 0), 3, CV_AA);
        imwrite(&quot;draw.jpg&quot;, draw);
    
        // Assemble a rotated rectangle out of that info
        RotatedRect box = minAreaRect(cv::Mat(not_a_rect_shape));
        std::cout &lt;&lt; &quot;Rotated box set to (&quot; &lt;&lt; box.boundingRect().x &lt;&lt; &quot;,&quot; &lt;&lt; box.boundingRect().y &lt;&lt; &quot;) &quot; &lt;&lt; box.size.width &lt;&lt; &quot;x&quot; &lt;&lt; box.size.height &lt;&lt; std::endl;
    
        // Does the order of the points matter? I assume they do NOT.
        // But if it does, is there an easy way to identify and order 
        // them as topLeft, topRight, bottomRight, bottomLeft?
        cv::Point2f src_vertices[4];
        src_vertices[0] = not_a_rect_shape[0];
        src_vertices[1] = not_a_rect_shape[1];
        src_vertices[2] = not_a_rect_shape[2];
        src_vertices[3] = not_a_rect_shape[3];
    
        Point2f dst_vertices[4];
        dst_vertices[0] = Point(0, 0);
        dst_vertices[1] = Point(0, box.boundingRect().width-1);
        dst_vertices[2] = Point(0, box.boundingRect().height-1);
        dst_vertices[3] = Point(box.boundingRect().width-1, box.boundingRect().height-1);
    
        Mat warpMatrix = getPerspectiveTransform(src_vertices, dst_vertices);
    
        cv::Mat rotated;
        warpPerspective(src, rotated, warpMatrix, rotated.size(), INTER_LINEAR, BORDER_CONSTANT);
    
        imwrite(&quot;rotated.jpg&quot;, rotated);
    
        return 0;
    }

Can someone help me fix this problem?


  [1]: http://nuigroup.com/forums/viewthread/3414/
  [2]: http://felix.abecassis.me/2011/10/opencv-rotation-deskewing/


Executing cv::warpPerspective for a fake deskewing on a set of cv::Point

I have PyDev, Java, and CDT installed on my Eclipse, and sometimes I need to switch between different perspectives; **Debug** to **Pydev**, for example. Does Eclipse have a shortcut to switch between them?

what&#39;s the shortcut of switching between different perspectives in eclipse

I&#39;m trying to implement a cropping &amp;  perspective correction feature into an upcoming app. Whilst doing research, I came across:

https://stackoverflow.com/questions/7838487/executing-cvwarpperspective-for-a-fake-deskewing-on-a-set-of-cvpoint

http://sudokugrab.blogspot.ch/2009/07/how-does-it-all-work.html

So I decided to try implementing this feature with OpenCV - the framework is there so the installation was fast. However, I&#39;m not getting the results I hoped for: (2nd picture is the result)

![Original Photo &amp; cropping box][1]

![Cropped Photo, bad result][2]

  [1]: http://i.stack.imgur.com/EnT2x.png
  [2]: http://i.stack.imgur.com/qINxd.png

I&#39;ve translated all the code to work with Xcode and triple checked the Coordinates. Can you tell me what is wrong with my code? For the sake of completeness, I&#39;ve also included the UIImage -&gt; Mat conversion + reversal:


    - (void)confirmedImage
    {
        if ([_adjustRect frameEdited]) {
        
        cv::Mat src = [self cvMatFromUIImage:_sourceImage];
        
        // My original Coordinates
        // 4-------3
        // |       |
        // |       |
        // |       |
        // 1-------2
        
        CGFloat scaleFactor =  [_sourceImageView contentScale];
        CGPoint p1 = [_adjustRect coordinatesForPoint:4 withScaleFactor:scaleFactor];
        CGPoint p2 = [_adjustRect coordinatesForPoint:3 withScaleFactor:scaleFactor];
        CGPoint p3 = [_adjustRect coordinatesForPoint:1 withScaleFactor:scaleFactor];
        CGPoint p4 = [_adjustRect coordinatesForPoint:2 withScaleFactor:scaleFactor];
        
        std::vector&lt;cv::Point2f&gt; c1;
        c1.push_back(cv::Point2f(p1.x, p1.y));
        c1.push_back(cv::Point2f(p2.x, p2.y));
        c1.push_back(cv::Point2f(p3.x, p3.y));
        c1.push_back(cv::Point2f(p4.x, p4.y));
        
        cv::RotatedRect box = minAreaRect(cv::Mat(c1));
        cv::Point2f pts[4];
        box.points(pts);
        
        cv::Point2f src_vertices[3];
        src_vertices[0] = pts[0];
        src_vertices[1] = pts[1];
        src_vertices[2] = pts[3];
        
        cv::Point2f dst_vertices[4];
        dst_vertices[0].x = 0;
        dst_vertices[0].y = 0;
        
        dst_vertices[1].x = box.boundingRect().width-1;
        dst_vertices[1].y = 0;
        
        dst_vertices[2].x = 0;
        dst_vertices[2].y = box.boundingRect().height-1;
        
        dst_vertices[3].x = box.boundingRect().width-1;
        dst_vertices[3].y = box.boundingRect().height-1;
        
        cv::Mat warpAffineMatrix = getAffineTransform(src_vertices, dst_vertices);
        
        cv::Mat rotated;
        cv::Size size(box.boundingRect().width, box.boundingRect().height);
        warpAffine(src, rotated, warpAffineMatrix, size, cv::INTER_LINEAR, cv::BORDER_CONSTANT);
        
        
        [_sourceImageView setNeedsDisplay];
        [_sourceImageView setImage:[self UIImageFromCVMat:rotated]];
        [_sourceImageView setContentMode:UIViewContentModeScaleAspectFit];
        
        rotated.release();
        src.release();
        
        }
    }
    
    - (UIImage *)UIImageFromCVMat:(cv::Mat)cvMat
    {
        NSData *data = [NSData dataWithBytes:cvMat.data length:cvMat.elemSize()*cvMat.total()];
        CGColorSpaceRef colorSpace;
        if ( cvMat.elemSize() == 1 ) {
            colorSpace = CGColorSpaceCreateDeviceGray();
        }
        else {
            colorSpace = CGColorSpaceCreateDeviceRGB();
        }
        CGDataProviderRef provider = CGDataProviderCreateWithCFData( (__bridge CFDataRef)data );
        CGImageRef imageRef = CGImageCreate( cvMat.cols, cvMat.rows, 8, 8 * cvMat.elemSize(), cvMat.step[0], colorSpace, kCGImageAlphaNone|kCGBitmapByteOrderDefault, provider, NULL, false, kCGRenderingIntentDefault );
        UIImage *finalImage = [UIImage imageWithCGImage:imageRef];
        CGImageRelease( imageRef );
        CGDataProviderRelease( provider );
        CGColorSpaceRelease( colorSpace );
        return finalImage;
    }
    
    - (cv::Mat)cvMatFromUIImage:(UIImage *)image
    {
        CGColorSpaceRef colorSpace = CGImageGetColorSpace( image.CGImage );
        CGFloat cols = image.size.width;
        CGFloat rows = image.size.height;
        cv::Mat cvMat( rows, cols, CV_8UC4 );
        CGContextRef contextRef = CGBitmapContextCreate( cvMat.data, cols, rows, 8, cvMat.step[0], colorSpace, kCGImageAlphaNoneSkipLast | kCGBitmapByteOrderDefault );
        CGContextDrawImage( contextRef, CGRectMake(0, 0, rows, cols), image.CGImage );
        CGContextRelease( contextRef );
        CGColorSpaceRelease( colorSpace );
        return cvMat;
    }

Is this the correct approach to my problem? Do you have any sample code that could help me out?

Thank you for reading my question!

UDATE:

I&#39;ve actually Open Sourced my UIImagePickerController replacement here: https://github.com/mmackh/MAImagePickerController-of-InstaPDF
which includes the adjustable cropping view, filters and perspective correction.

Perspective Transform + Crop in iOS with OpenCV

PIL&#39;s [`Image.transform`][1] has a perspective-mode which requires an 8-tuple of data but I can&#39;t figure out how to convert let&#39;s say a right tilt of 30 degrees to that tuple.

Can anyone explain it?

  [1]: http://effbot.org/imagingbook/image.htm#tag-Image.Image.transform

How does perspective transformation work in PIL?

I wonder about the `gluPerspective` parameters.

In all examples I see `fovy` is set to around 45-60degrees
I&#39;ve tried to set it to different values and the object just disappears 
what&#39;s the explanation for it? 

The `aspect` value should always be the ratio? why would one change it?

`zNear, zFar` - once again the usual values are around 10 and 500+ what does it reflect?

Content Type	Original Author	Original Content on Stackoverflow
Question	Sam Dolan	View Question on Stackoverflow
Solution 1 - Eclipse	skaffman	View Answer on Stackoverflow
Solution 2 - Eclipse	Daniel Adenew	View Answer on Stackoverflow
Solution 3 - Eclipse	Sunil Kumar	View Answer on Stackoverflow
Solution 4 - Eclipse	Geeky	View Answer on Stackoverflow
Solution 5 - Eclipse	mrzzmr	View Answer on Stackoverflow

How do I turn off "Automatically Switch to Debug Perspective" mode in eclipse?

Eclipse Problem Overview

Eclipse Solutions

Solution 1 - Eclipse

Solution 2 - Eclipse

1

2

Solution 3 - Eclipse

Solution 4 - Eclipse

Solution 5 - Eclipse

What is the -fPIE option for position-independent executables in gcc and ld?

iPhone UIButton - image position

Attributions