I want to select a part of curve in a figure with mouse interactively, and get the average value of this part of data automatically. For example,I select a part of data with dual cursors or two vertical lines with mouse in a curve, the matlab give the average value between them, how can I do it? thanks you.
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I think the simplest way to do this would be to use the brush feature.
1. Plot your data
2. From the figure toolbar, select the brush (next to the data cursor button)
3. Draw a box around the data
4. Right-click on the brushed data and create a new variable in the workspace
5. Take the mean of the data from the workspace.