How to obtain data in a matrix from fig.file?

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maria
maria 2018-11-23
回答： Star Strider 2018-11-23
Hi,
A colleague gave a fig. file which is a 2D matrix with a scale color from 0 to 255. He plotted the data, saved them in a fig file a sent to me. I would like to suf the data and for that I need to extract the data. I am using for that this code:
openfig('figure.fig')
h = gcf;
axesObjs = h.Children;
dataObjs = axesObjs.Children;
data = dataObjs.CDataMapping;
But I got the error
No appropriate method, property, or field 'CDataMapping' for class 'matlab.graphics.GraphicsPlaceholder'.
What is wrong?

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Star Strider
Star Strider 2018-11-23
The ‘Children’ propertiy disappeared with the introduction of ‘HG2’ (handle graphics version 2) in R2014b.
You most likely need to use the findobj (link) function.
Example —
figure
surf(rand(10))
h = gca;
srf = findobj(h,'Type','Surface');
X = srf.XData;
Y = srf.YData;
Z = srf.ZData;
That should return all the data you want. To see all the fields in the ‘srf’ structure, use:
sp = get(srf)
to display them.

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