Comments and Ratings

A useful aspect of export_fig is that it can output the rasterized figure as an image array. For example, you can use this output to save the figure in grayscale, or with a specific resolution (pixels/inch value).

Richard: This issue is do do with the way MATLAB deals with the colormap, rather than the colormap itself, which is as it should be. MATLAB can only handle 256 level colormaps for indexed images (on Windows). Pcolor avoids the problem. So does using truecolor (rather than indexed) images. You can use real2rgb to generate a truecolor image from your 1024 level colormap and your indexed image.

Stefan: For some reason the eps file generated by MATLAB's print function doesn't name the fonts correctly. I suggest you contact TMW's technical support. If and when print generates an eps file correctly but print_pdf/export_fig doesn't then generate the correct pdf, then I will investigate further.

Fun

The edges still don't appear to be transparent. If you have export_fig (here on the FEX) then the following gives a good result:
logo; set(gcf, 'color', 'none', 'position', [101 100 127 128]); export_fig matlabicon.png -nocrop

Great function. The interactive display is a brilliant feature.

Thanks, Haim. I've found a solution now. I use nvcc to convert.cu files to .cpp files, then call mex as normal. This avoids copying/changing any of the MATLAB scripts.

Is this supposed to compile on linux, or only on Windows? I can't get it to compile on linux.

Justin - if you prefer the image displaying properties of imagesc I suggest you use image(sc(X)). However, you then don't get the correct colorbar. If it's just the aspect ratio you don't like then call set(gca, 'DataAspectRatioMode', 'auto') after sc.

David Meller: remove the last two input arguments ('start', 'end') from regexp on line 128. Please email me (use the contact author link on my author page) if you get any more errors.

See fix_lines (http://www.mathworks.com/matlabcentral/fileexchange/23604) for an equivalent function which automatically changes dash length according to line width.

Ken: Could the images not appearing in the online html be due the difference in case of the image file extensions? The zip file images are .PNG while the html is looking for .png. I look forward to seeing them!

Displaying more than one image will clear the figure. Displaying a single figure will put it in the current axes.

The idea of having the filenames as captions is excellent, but there are a couple of issues that I can see which would significantly increase the complexity of the code, not least how and where to render the text so it is clearly visible, so I'm afraid I won't be doing it. I recommend someone giving it a try though.

Figure size is chosen to maximize image size of large images, or give integer magnification for small images (thus avoiding nearest-neighbour resizing artefacts). Layout is chosen to allow the largest image size possible. Note that this will not necessarily minimize the number of blank spaces. Both figure size and layout are based on the size of the first image. If you have an example of it doing a bad job please email me the images and test script.

Removing the axes is a "feature" of the display side of this code. Unfortunately it does mean subplot titles and axes labels are hidden. This is something I've tried hard to avoid, but haven't found a way yet. You can use IMSHOW instead, but still get the benefits of SC, thus:
   imshow(sc(X, 'jet'));

That's poor form.

It's an informative video, but it would be better if we could stream the 7MB video from somewhere, rather than download and unzip a 12MB file.

The bug reported in the last two comments has been fixed.

PDFs can be used in Latex to produce PDF files using pdflatex, but not PS files using latex & dvips. See:
http://amath.colorado.edu/documentation/LaTeX/reference/figures.html
James: perhaps you are trying to do the latter. If so you need to save your figures as EPS files - try using print_eps.

All the path issues mentioned have been fixed. The bbox error with gsview has been fixed.

The function uses the output of MATLAB's print, which automatically sets the background to white and italic Greek letters to non-italic (see http://www.mathworks.com/support/bugreports/details.html?rp=365825 for the latter).

For Windows, download gs###w32.exe (where ### is a number, e.g. 863) from Sourceforge (follow the link at ghostscript.com), and extract it to the default location. Download the zip file named Xpdf-#.##pl2-win32.zip from http://www.foolabs.com/xpdf/download.html and extract the files in it to the folder
C:\Program Files\gs\gs#.##\bin (where #.## is a number) where Ghostscript was installed. Now put this folder on your system path, by following instructions at:
http://windowsitpro.com/article/articleid/48074/how-can-i-add-a-new-folder-to-my-system-path.html

This is a great idea, and one that inspired me to improve my own pdf rendering function, print_pdf. I've managed to get dash lengths to vary with line widths too, and make grid lines dotted rather than dashed. Thanks for the inspiration, Jiro!

Apologies for the recent flurry of updates to this file. I was too quick to upload functionality that turned out to be buggy and incomplete. The latest version is now stable, and also enables dash lengths to change with line width - super!

The latest version now finds Ghostscript automatically on Windows, if it was installed in the default location.

You should edit the Path in the User Environment Variables. The way to do this varies between versions of windows. I suggest you search for the relevant instructions in google using:
windows XXXX set system path
where XXXX is your version of Windows, e.g. Vista, XP, 2000.
Add
;C:\Program Files\gs\gs8.63\bin\gswin32c.exe
(or the appropriate path to your Ghostscript installation) to end of the path, remembering the semicolon at the start to separate paths.

A nice idea that has greatly improved some figures I'm publishing.

I would have liked the function to simply save the anti-aliased output to file (png). I've now written something similar which does just that.