Extracting y-data from ezplot.

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Patrick
Patrick 2013-8-12
Dear everyone
I've created a plot using ezplot, and I want to extract the ydata. Now I have used the get(object,'YData'), but all I get are the y-axis values. I'm doing the following:
cd=ezplot('1.5*x.^.56*y.^.44=1', [0 6 0 6]);
And then something like:
y=get(cd,'YData');
But all I get is values from 0 to 6, not the shown y-values in the figure! In essence I need all the (x,y)-pairs in the interval (0 excluded)
Thanks in advance Patrick
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kalpana
kalpana 2013-8-12
I also want the x&y values of ezplot. how to get them? Please help us if you know.

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Friedrich
Friedrich 2013-8-12
编辑：Friedrich 2013-8-12
Hi,
you need to get the contourMatrix:
bla = ezplot('1.5*x.^.56*y.^.44=1', [0 6 0 6]);
tmp = get(bla,'contourMatrix');
figure
plot(tmp(1,:),tmp(2,:))
set(gca,'ylim',[0 6])
Small note: Don't name a variable, e.g. "cd" like a MATLAB function.
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Patrick
Patrick 2013-8-14
By the way Friedrich, if you are still reading. If you don't mind me asking: how did you know this? I could not find the information in the 'help'-section myself, so I'm quite interrested in knowing where you got the information.
Thanks in advance, and again thank you for the answer itself.
Friedrich
Friedrich 2013-8-14
编辑：Friedrich 2013-8-14
Hi,
I ran
bla = ezplot('1.5*x.^.56*y.^.44=1', [0 6 0 6]);
And then did a get(bla) to see what are the properties and what is stored in them. Since there aren't much properties which contain any numerical data it didn't took long to figure out that the data is stored under the contourMatrix property.

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