I have two column vectors (f and g). From this two vector how can i calculate the Delta (in picture).
The picture is just an example, I need an universal way to calculate the Delta.
MATLAB: How to calculate intersection between the domains of two functions
intersection
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inpolygon is celeberated function here.
X = [0 2 2 4 4 5 5 3 3 0 0 1 1 0];Y = [0 0 1 1 0 0 7 7 5 5 3 3 1 1];del = 0.1;x_min = min(X);x_max = max(X);y_min = min(Y);y_max = max(Y);[xg,yg] = meshgrid(x_min:del:x_max, y_min:del:y_max);idx = inpolygon(xg,yg,X,Y) ; figurehold onplot(xg(~idx),yg(~idx),'.r')plot(xg(idx),yg(idx),'.b')plot(X,Y,'k')
I found a better way... try
x=1:10; f=x.^2; g=x.^2+1; patch([x x(end:-1:1)], [f g(end:-1:1)],'y')This sets up x=1...10, g=x² and f=x²+1 and then plots the area between the curves as a yellow polygon/patch. Compare the matlab help for patch.
Here i simply draw all points forf first in positive x direction and then jump to the last point of g and draw the points of g backwards from x=10...1. All in all a complete polygon. Btw, 'y' is the color yellow.
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