standard deviation of points from line

I have some sample points and a line. How do I calculate the standard deviation of points from line ? See the image attached showing the points and red line.

Answer 1

[Walter Roberson]

Use either bwdist or bwdistgeodesic after having created a mask in which the line pixels are set to 1. Then access it at the points of interest to find the distance to the line. You can then std() the distances.

[Walter Roberson]

How do you represent the line?