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Matlab Hints and Links

You can find Matlab documentation at MathWorks site. Other available information sources:

Other Hints

Problem solving

Try to compile your m-files to C and standalone binary code, it will reveal many stupid bugs. Check the mcc command.

Saving figures for articles

Currently the easiest way to produce useful figures is to use export_fig. You can get the script from Matlab Central: export_fig (just download, unpack and use). If you are still unhappy, then you need to hack Matlab saveas() or print() yourself.

It is suggested to use pdflatex as a tex compiler. This approach requires pdf files which can be produced by first exporting all your figures as eps and then converting them with epstopdf.

To create nice EPS-files from figures you can use something like this:

print(figure_handle, '-depsc2', '-r600', '-painters', file_name);

This creates Encapsulated PostScript level 2 in colors using vector drawing and optimizing for 600 ppi print resolution. Notice that this is primarily for vector graphics. If you have only pixel-based images (pixmaps), painters mode may create unnecessarily huge files, so you should try the Z-buffer mode, which creates pixmaps. If you need mixed vector graphics and pixmaps, you have to try what is best wrt. file size and quality. For instance, downscale the pixmaps in Matlab before plotting them into a figure and then print in painters mode. Painters mode most likely renders every pixel in a pixmap with a colored quadrilateral. Also notice that 600 ppi is huge, normal screen resolution is 75-120 ppi, and usual print resolution is 300 ppi. Required ppi depends on the print quality you want.

If Matlab inverts marker colors in figures when printing and that's bad, try

set(gcf,'InvertHardCopy','off')

Remember to select colormaps, so that they look nice also when converted to gray scale: http://blogs.mathworks.com/steve/2006/05/09/a-lab-based-uniform-color-scale/ (a related colormap generator: http://bsp.pdx.edu/Software/ColorSpiral.m)

In the end you can convert your eps files to pdf files (with a same basename) with

epstopdf <filename>.eps

Other

How to show a single channel image with undetermined values as holes:

image(img, 'CDataMapping', 'scaled', 'AlphaData', ~isnan(img));