Thread Subject: avoid white region while saving image from matlab

I currently use "saveas" function to save images to my folder. However, all images have white region around it. I'm not sure how to avoid matlab to save this waste memory. Thanks in advanced!

On Jun 22, 8:44 pm, "Khanh " <kdc...@mtu.edu> wrote:
> I currently use "saveas" function to save images to my folder. However, all images have white region around it. I'm not sure how to avoid matlab to save this waste memory. Thanks in advanced!

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Yes, MATLAB figures usually have huge amounts of blank space around
them - I don't know why. Try export_fig, mentioned in the FAQ:
http://matlab.wikia.com/wiki/FAQ#How_do_I_save_my_figure.2C_axes.2C_or_image.3F_I.27m_having_trouble_with_the_built_in_MATLAB_functions.

It is default axes box size, you can increase it, example:

x=0:0.01:1;
y=x.^2;
plot(x,y,'r');

% increase axes box:
incf=1.15; % increase factor
pos=get(gca,'position');
% center:
xc=pos(1)+pos(3)/2;
yc=pos(2)+pos(4)/2;
posi=[xc-incf*pos(3)/2 yc-incf*pos(4)/2 incf*pos(3)
incf*pos(4)]; % increased
set(gca,'position',posi);

saveas(gcf,'example.png');

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Maxim Vedenev, Matlab freelancer
vedenev@ngs.ru
http://simulations.narod.ru/