matlab - Identify/Extract identical curves from a multicurve plot plot -

lets have plot containing 300 curves. there method in matlab 2014a can identify curves identical each other? more specific, if have 10 curves on single figure, curve 1 identical , close curve 2, same happens curve 3,4 , 5. there automated on way matlab instead of visual inspection?

thanks

george

might take while if 300 curves in array c(n,300). n arbitrary , number of point have 1 each curve.

for i in 1:300 , j in i:300 want compare c(:,i) - c(:,j) given threshold (which depends on how want 2 curve differ each other). with: abs(sum(c(:,i) - c(:,j))) < thresh -> sum difference points between 2 curves, difference should small if curves similar.

when find c(:,j) below threshold want remove pool of 300 curve. done c = c(:,~ismember(1:size(c,2),j)); give code like:

i = 1; thresh = 1; %arbitrary threshold here adapt needs while i<size(c,2) j = i+1; while j<size(c,2) if abs(sum(c(:,i) - c(:,j))) < thresh c = c(:,~ismember(1:size(c,2),j)); %remove curve j c else j = j+1; end end = i+1; end 

edit when comparison threshold want compare absolute value of sum. changed code reflect that.