Issue with finding the distance using improfile.

I want to draw a line between two subplots (eg: subplot(1,2,1) and subplot(1,2,2)) based on their corresponding features. Afterwards, i want to find the euclidean distance between the subplots.

Here is the code that i have used:

openfig('pic1.fig')
[x, y, rgbLevels] = improfile();
line([x(1), x(end)], [y(1), y(end)]);
dist = sqrt((x(end)-x(1))^2 + (y(end)-y(1))^2)

My question is: improfile doesn't allow me to draw a line between two subplots. Instead it allows me to draw a line on one image only(which is not my intention). Can anyone tell me how to solve this issue? Thank you in advance.

Answer 1

[Image Analyst]

No it doesn't. improfile is not meant for that since it can't access pixels outside an image, like those on the GUI background. Maybe you can use ginput(2) instead.