Removing the grey margin of a plot

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hamed
hamed on 27 Nov 2017
Commented: hamed on 1 Dec 2017
Hi I'm doing an image analysis using matlab. I have a figure that I need to remove the grey margin and axes while keeping the original white plot area size constant and then save it as png. You can see the saved original png which I need to remove the axes and the margin but keeping the plot area size constant. p.s. I'm using R2017a version.

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Accepted Answer

KSSV
KSSV on 27 Nov 2017
plot(peaks)
title('Plot of Peaks Function')
axis off
ax = gca;
outerpos = ax.OuterPosition;
ti = ax.TightInset;
left = outerpos(1) + ti(1);
bottom = outerpos(2) + ti(2);
ax_width = outerpos(3) - ti(1) - ti(3);
ax_height = outerpos(4) - ti(2) - ti(4);
ax.Position = [left bottom ax_width ax_height];
Now save them using saveas
  1 Comment
hamed
hamed on 1 Dec 2017
I faced another problem. This code still keeps the margin due to x and y axis even though I removed the axis. You can see that in the attached figure. How to remove that white margin too?

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More Answers (1)

Walter Roberson
Walter Roberson on 27 Nov 2017
img = imread('fig2.png');
im2 = img;
mask = repmat(all(im2 < 240,3),1,1,3);
im2(mask) = 255;

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