Roi to a 1D array in matlab

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MSP
MSP 2020-4-8
编辑： MSP 2020-4-9
How do i select a ROI using mouse in an image (imagesc plot) and get the content of the roi in a 1d vector? I needed help on that.Thanks in advance
Using roipoly and mouse we create a mask by right clicking,this yields a binary mask. But instead I want the content inside the roi (basically the values of the original image under roi) to be transferred to a 1d array.Is it possible?

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