Adjust width of error bars

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Bernoulli Lizard
Bernoulli Lizard on 16 Oct 2012
How can I adjust the width of the error bars on a plot that I have already made? I found a few downloadable functions that claim to solve this problem, but I can not use them for plots (.fig files) that I have already made. Since I can't re make all of my plots (that would take days) is there any way that I can change the error bar width at this point?
thanks
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Bernoulli Lizard
Bernoulli Lizard on 16 Oct 2012
None of the above. I want to change the horizontal length of the bars. I can change the line width (which is like the 'font size' of the line) under figure properties.

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Answers (1)

Matt Fig
Matt Fig on 16 Oct 2012
Edited: Matt Fig on 16 Oct 2012
O.k., here is an example:
X = 0:pi/10:pi;
Y = sin(X);
E = std(Y)*ones(size(X));
B = errorbar(X,Y,E) ;
pause(1)
C = get(B,'children');
X = get(C(2),'xdata');
X2 = reshape(X,9,[]);
X2([4 7],:) = X2([4 7],:)-.2;
X2([5 8],:) = X2([5 8],:)+.2;
set(C(2),'xdata',X2(:).')
So for your problem just use FINDALL to get the handle to the errorbar hggroup then run the code I show on that handle. You could even set it up to open each figure one by one and do it by using DIR or WHAT.
  2 Comments
Matt Fig
Matt Fig on 16 Oct 2012
Edited: Matt Fig on 16 Oct 2012
O.k., perhaps a more extensive example will help (did you read the help for FINDALL??):
F = figure;
X = 0:pi/10:pi;
Y = sin(X);
E = std(Y)*ones(size(X));
errorbar(X,Y,E) ;
hgsave(F,'error_bar_examp') % Save the figure
close(F) % close the figure
% Now we will open the figure and proceed:
F = hgload('error_bar_examp');
B = findall(F,'type','hggroup'); % Get the handle.
% Now we are back to where we were before the pause
% in my previous example... Proceed the same way from here.
Also, for your reference you may want to read:
doc findall
doc errorbar
doc dir

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