How can I properly export a figure using the 'patch' command?

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Peter 2012-11-8

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Hi all:

I'd like to export a figure in which I use the 'patch' command to shade recessions. However, the image quality drops as soon as I add the recession bands.

With recession bands: https://dl.dropbox.com/u/35346756/fig1.pdf

Without recession bands: https://dl.dropbox.com/u/35346756/fig2.pdf

I'm using 'exportfig' and convert eps into pdf via ghostscript.

Does anybody have an idea how to fix this problem?

Best, Peter

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Answer 1

José-Luis 2012-11-8

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编辑：José-Luis 2012-11-8

Looks like your image is transformed to a bitmap. When you use patch, the renderer might be set to OpenGL by default. Try and change your renderer to Painters before exporting your figure. That should ensure that you keep vector graphics. Note that transparencies won't work with Painters.

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José-Luis 2012-11-8

在 MATLAB Online 中打开

Without looking at your code I can only speculate. It might be that 'Painter' does not support the color of the patches you are using, see here. You could always try to change the color of your patches. For instance, this seems to work:

 % For this example, there are five triangles (m = 5) sharing 
 % eleven unique vertices (k = 11).  
 verts = [2 4; ...
        2 8; ...
        8 4; ...
        8 0; ...
        0 4; ...
        2 6; ...
        2 2; ...
        4 2; ...
        4 0; ...
        5 2; ...
        5 0 ];
 faces = [1  2  3; ...
         1  3  4; ...
         5  6  1; ...
         7  8  9; ...
         11 10 4];
 p = patch('Faces',faces,'Vertices',verts,'FaceColor','b','FaceAlpha',0.5); hold on;
 plot(1:8,'k','LineWidth',2);
 %Saving plot
 options.units = 'centimeters';
 options.Width = 8;
 options.Height = 8;
 options.format = 'eps';
 options.FontName = 'arial'; 
 options.Renderer = 'painters';
 hgexport(gcf,'test.eps',options);

Another option is to use the other renderers, but increase your resolution so as to improve the quality of the picture, i.e. reduce anti-aliasing and pixelation.

José-Luis 2012-11-8

编辑：José-Luis 2012-11-8

在 MATLAB Online 中打开

set(h_over,'XTick',[],'YTick',[]);

or

linkaxes([h h_over],'x');

Off the top of my head I can't remember the command you are asking for or whether it actually exists.

Peter 2012-11-9

set(gca,'Layer','top') worked out. Thanks for your help José-Luis!

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How can I properly export a figure using the 'patch' command?

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