MATLAB: Do I receive an error when printing an image from a compiled MATLAB application

Question

Why do I receive the error "ERROR: Failed to find MEX-File on path : iofun/private/wtifc.dll." when printing an image from a compiled MATLAB application?

I am unable to get my compiled MATLAB application to generate image files such as TIFF files. The MATLAB application works fine within MATLAB, but when I compile it, I receive the following error messages:

Failed to find MEX-File on path : iofun/private/wtifc.dll.

and

 Function 'get_param' is not implemented in standalone mode.

Answer 1

The main reason this error occurs is because you are attempting to use an unsupported feature of the PRINT function in standalone mode. The MATLAB C/C++ Graphics Library currently only supports a limited number of flags or options with the PRINT function and the "-dtiff" option is not one of them.

Currently, to work around this issue:

1.) Save the figure to a bitmap file using the PRINT function with the -dbitmap option

2.) Read from the file using the IMREAD function

3.) Use IMWRITE to create the TIFF image

The example code below shows this workaround:

tmpfname = 'outfile';
print('-dbitmap', [tmpfname, '.bmp']);
[X, map] = imread( [tmpfname, '.bmp'] );
delete( [tmpfname, '.bmp'] );
imwrite(X, map, [tmpfname, '.tif'], , 'tiff','resolution',300);