MATLAB: Mirrored axes labels with imagesc

alphadataimagesc

Hi,

when I execute the following code

a = rand(5,5)
a(3,3) = NaN
figure 
imagesc(a,'AlphaData',double(~isnan(a)))

I get mirrored axes labels and also the data cursor info is mirrored. Does anybody know why and how to avoid it?

I use MATLAB R2010b on Win XP.

Best Answer

The MathWorks support says this is a known problem of some ATI graphics devices. Updating the driver for the graphic device didn't help in my case. It is possible to switch the OpenGL renderer by

opengl('software')

This sovles my problem.

Thanks for your help!

Related Solutions

MATLAB: Are the numbers on the figure axes upside-down when I try to superimpose a PATCH object onto an image using MATLAB 7.9 (R2009b)

The upside-down numbers in figure axes can be resolved by changing the OPENGL renderer in MATLAB 7.9 (R2009b).

The mirrored axes might be caused by the hardware version of the OPENGL renderer. To determine if this is the case, set MATLAB to use the software version of the OPENGL renderer as below:

opengl software

Now, generate image superimposed with a semi-transparent patch, for example:

A = imread('cameraman.tif');
figure('Renderer','painters');
imagesc(A);
patch([100 150 150 100],[150 150 100 100],'k','FaceAlpha',.25);

You can check if the “Renderer” is “Generic” (software OpenGL) by executing:

opengl info

If the axes show correct numbered labels after following the steps above, then the issue is with the hardware version of OpenGL rendering. You may be able to resolve the issue by updating the graphics card drivers.

MATLAB: Axis numbers upside down

This sounds like an OpenGL problem. Please try this:

opengl('software')

In older Matlab releases this might be:

feature('UseGenericOpenGL', 1)

Or under Linux:

feature('UseMesaSoftwareOpenGL', 1)

See:

help opengl
opengl info

and: Answers: mirrored axes lables

Best Answer

Related Solutions

MATLAB: Are the numbers on the figure axes upside-down when I try to superimpose a PATCH object onto an image using MATLAB 7.9 (R2009b)

MATLAB: Axis numbers upside down

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