Jonas Reber

Last seen: 5 meses hace | Con actividad desde 2011

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Matlab exponent bug?
Hello MatLabers I have encountered a problem when calculating a non integer exponent/power of a variable. example: ...

alrededor de 13 años hace | 3 respuestas | 1

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eigen faces
Eigenfaces are eigenvectors. When performing principal component analysis (PCA) on a set of images showing human faces, the pri...

alrededor de 13 años hace | 0

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when using copyobj() with a contour, changing properties of the copy has no effect
mathworks technical support confirmed that this is a misbehaviour and that it will be resolved in a future version.

alrededor de 13 años hace | 0

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Calling another program
you might be looking for system('command') [status, result] = system('command') [status,result] = system('command','-...

alrededor de 13 años hace | 0

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Assigning data to variable names in a vector during a for loop.
yes this is possible. you could use the command "eval" that comes with matlab. have a look at the documentation. for your c...

alrededor de 13 años hace | 1

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how to use fread function?
have a look at the documentation of fread: http://www.mathworks.ch/help/techdoc/ref/fread.html you might be looking for: ...

alrededor de 13 años hace | 0

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How to save an image displayed ?
have a look at the solution I provided in your second question. it should answer both: http://www.mathworks.com/matlabcentral/a...

alrededor de 13 años hace | 0

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How to recostruct ROI on an image and diaplay it?
after having read your first question ( <http://www.mathworks.com/matlabcentral/answers/18789-how-to-save-an-image-displayed>) I...

alrededor de 13 años hace | 1

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Update to R2011b breaks call to addlistener
does the event exist on the "figureHandle"? get(get(classhandle(handle(figureHandle)),'Events'),'Name') what if you tr...

alrededor de 13 años hace | 0

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size of image
how did you store your images? is it a 2d matrix? did you store it like: (N images of size 3 by 4) 1 1 1 1 1 1 1 1 1 1 1 1...

alrededor de 13 años hace | 0

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when using copyobj() with a contour, changing properties of the copy has no effect
Hello MatLabers I'm using a contour plot on several axes. Since I have quite an amount of points, the calculation of the cont...

alrededor de 13 años hace | 1 respuesta | 0

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Multiple Callback Functions
Hello MatLabers I'm trying to have multiple callback functions executed on a uicontrol callback function. Usually I go so...

más de 13 años hace | 5 respuestas | 1

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Competing algorithms for SNR of a image. Which is better?
I would go for method 2 (3 is the same?) but wouln't one calculate SNR = mean2(im)/std(im(:))?

más de 13 años hace | 0

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2D projection in a 3D plot
something similar has just recently been asked: http://www.mathworks.com/matlabcentral/answers/8752-get-projection-image-witho...

más de 13 años hace | 1

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manipulate pixels in an image
if you don't have it you could take a look at e.g. http://www.mathworks.com/matlabcentral/fileexchange/4658-updownsample

más de 13 años hace | 0

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Data sets from image
does it help if I provide you the following code as an example...? %% Two Dimensional DFT Example % 1.Load the sample ...

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RGB to HSV image
does the rgb2hsv function not work? I do it that way..., hsvimg = rgb2hsv(rgbimg); ... do something ... (like saturat...

más de 13 años hace | 0

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Image Processing: Remove double edges
you could take another derivative (2nd) and only keep the positive values 1 0 1 => 0 -1 1 (depenting on the direction you are...

más de 13 años hace | 0

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subscript mismatch
maybe this one answers your question: http://www.mathworks.com/support/tech-notes/1200/1207.html#5 you try to assign/access...

más de 13 años hace | 0

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iptPointerManager significantly slows program down
Hello MatLabers As recently I was looking for a method to have a mouse over (mouse hover) effect on my graphics objects (drag...

más de 13 años hace | 1 respuesta | 0

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Code's improvement (plots animation)
the problem is that getframe as used by you gets the current figure as it is. If you maximize the window and "record" the movie ...

más de 13 años hace | 1

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get projection image without rendering to screen
you could calculate the perspective projection of your model yourself as you have all the information on camera position, look a...

más de 13 años hace | 2

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Trouble with ButtonDownFcn and Hittest in GUIDE
this looks reasonable to me. have you tried ThePlot = plot(xvalues, yvalues, 'Parent', handles.TheAxes, 'Tag', 'ThePlotTag'...

más de 13 años hace | 1

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I can not use libsvm!!!
I used libsvm myself in matlab. * download it from ( <http://www.csie.ntu.edu.tw/~cjlin/libsvm/#download>) * add the svmtrain,...

más de 13 años hace | 5

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Creating an inline-function in dependence of a parameter
maybe str2func is what you are looking for?

más de 13 años hace | 0

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Contextmenu Callback to set class variable
Hello MatLabers I am looking for a better/smoother way to implement the setting of a class variable in a callback. I'm sure t...

más de 13 años hace | 1 respuesta | 0

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Seeded Region Growing Method
what about the FE submission: http://www.mathworks.com/matlabcentral/fileexchange/19084 ?

más de 13 años hace | 1

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detecting circular Objects
have you had a look at: http://www.mathworks.com/matlabcentral/fileexchange/9833-hough-transform-for-circle-detection

más de 13 años hace | 0

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Multiple colormaps within the same image
Have you looked at <http://www.mathworks.com/help/toolbox/images/ref/subimage.html |SUBIMAGE|>? You can specify different color...

más de 13 años hace | 1

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Get Unique Instance Identifier
Hello MatLabers How do I get the unique object identifier of an object (i.e. the handle)? I have several objects in a cell arr...

más de 13 años hace | 1 respuesta | 1

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