Extract data from MATLAB plots

Hello All, I have a figure from which I want to extract data. Please see figure. I need to find the average(y-axes values) for the x-axes between 100 and 400 and 700 and 2000. I have started with the following code snippet but how do I move ahead with this?

>> h=gcf;
>> axesObjs = get(h, 'Children');  %axes handles
      dataObjs = get(axesObjs, 'Children');
>>       objTypes = get(dataObjs, 'Type');
>> xdata=get(dataObjs,'XData');
>> ydata=get(dataObjs,'YData');
>> my_avg = mean(ydata, [100 400]);

Thanks!

[Kash022]

I think I figured it out.

y1 = ydata(100:400);
x1= mean(y1);

Hope this is correct? Thanks!

Answer 1

[Ralf]

Hi ksnf3000,

I doubt that this is correct. This would calculate the mean value of ydata between the 100th and 400th data point of ydata.

As far as I understand you want to calculate the mean value of ydata values, when the corresponding xdata values are between 100 and 400.

For this you would need the following

y1 = ydata((xdata>=100) & (xdata<=400));
x1 = mean(y1);