Using ginput with imshow: how to save pixel instead of axis coordinates

I'm trying to save coordinates of several points in an image (displayed with imshow) as a new variable, and then run some calculations on the selected pixels based on their coordinates. For some reason my coordinates are not saved as integers but doubles. I tried setting axis limits to [0 x 0 y] where x,y is my pixel resolution, but it doesn't work. Is there any way to save pixel XY instead of current axis coordinates? Thanks in advance for help!

Answer 1

[Bjorn Gustavsson]

Not directly from ginput. You can easily do whatever rounding of the coordinates you've chosen directly after:

[x,y] = ginput(23);
idx2 = round(x);
idx1 = round(y);

You should also make sure that idx2 and idx1 are between 1 and the size of your image etc.

HTH

[Corymbiamaculata]

So simple :) Thanks!