MATLAB: How to get the values on a given axis of a given figure

axisdatafigurefunctionMATLAB

Hello,

I'm doing a little re-labeling function on an existing figure and I need to get the number of values on the X axis. The data plotted on the figure is supposed to be unknown, and I was wondering if it was possible to more generally retrieve the data values from the axes of any given figure.

Thank you very much for you help

all the best

Best Answer

 x=0:0.1:10;
 y=sin(x)
 plot(x,y)

%select a plot in your figure, then run this:

xdata=get(gco,'Xdata') % to get X-axis data
Ydata=get(gco,'Ydata') % to get Y-axis data

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MATLAB: Using “cellfun(@plot..” how do you specify figure assignment similar to plot(fig, X, Y)

ax = gca(fig);
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However, you could also use

ax = gca(fig);
XY = [Cell_with_X(:), Cell_with_Y(:)].';
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MATLAB: How to get data from figures produced by errorbars

%example data
X = 0:pi/10:pi;
Y = sin(X);
E = std(Y)*ones(size(X));
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yData = get(get(gca, 'Children'), 'YData');
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isequal(E',uData) %it is equal, same content

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MATLAB: Using “cellfun(@plot..” how do you specify figure assignment similar to plot(fig, X, Y)

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