Draw a line between two points on plotted data and compute its length

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Asatur Khurshudyan
Asatur Khurshudyan 2020-5-21
评论： Asatur Khurshudyan 2020-5-22
Hi All,
Suppose we have a set of 2D points:
px = [1, 2, 5];
py = [1, 2, 1.5];
When we plot these points, we get 3 distinct points:
plot(px, py, 'r*')
Is it possible to draw a line connecting any two of those directly on the figure and measure the Euclid distance between them?
Regards
Edit
I don't need to PLOT a line. I need to click at one point and move the mouse to the second point to draw the line and measure the Euclidean distance between them,.

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KSSV
KSSV 2020-5-21
px = [1, 2, 5];
py = [1, 2, 1.5];
x = [px(1) py(1)] ;
y = [px(2) py(2)] ;
z = [px(3) py(3)] ;
plot3(x,y,z,'r')
d = sqrt(diff(x)^2+diff(y)^2+diff(z)^2)
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