Retrieving data from many plots

Question

manta24 2018-6-13

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/405379-retrieving-data-from-many-plots

评论： manta24 2018-6-13

I'm trying to figure out how to pull data from a figure that has 6 lines plotted on the same graph, and I have no idea how to approach this. I need to pull individual line plot data. Can anyone help me?

My code looks like this:

openfig('filename');
hf = gcf;
gca;
get(gca);
axesObjs = get(h, 'Children');  
dataObjs = get(axesObjs, 'Children');
objTypes = get(dataObjs, 'Type');
xdata = get(dataObjs, 'XData'); 
ydata = get(dataObjs, 'YData');

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Answer 1

KSSV 2018-6-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/405379-retrieving-data-from-many-plots#answer_324453

在 MATLAB Online 中打开

Already you have the data in hand. YOur xdata and ydata will be a cell with your required data. Check the below demo code:

figure
hold on
for i = 1:5
    plot(rand(1,10));
end
h = gcf;
axesObjs = get(h, 'Children');  
dataObjs = get(axesObjs, 'Children');
objTypes = get(dataObjs, 'Type');
xdata = get(dataObjs, 'XData'); 
ydata = get(dataObjs, 'YData');
% extract data
for i = 1:numel(xdata)
    fprintf('%d line data\n',i) ;
    xdata{i}
    ydata{i}
end