MATLAB: Finding a position of a point on graph

graphposition;

Hello.

I have some data and need to draw. After drawing, I need to select a point on the graph and I am looking to how MATLAB can give me position of that point (x and y)?

Thanks a lot

Best Answer

Use ginput

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MATLAB: Finding black pixel position

[ii,jj] = find(all(I==0,3))
[~,k] = unique(ii,'first')
ij = [ii(k) jj(k)]

MATLAB: Finding the point

Right or left hand side means above or under the line?

If so:

line_eq = k*x + n
P = (a,b)
if k*a + n > b
'under the line'
elseif if k*a + n < b
'above the line'
else
'on the line'
end

Best Answer

Related Solutions

MATLAB: Finding black pixel position

MATLAB: Finding the point

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