A "discrete" contour plot
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If M(i,j) is a matrix,
How might I plot a contour plot where the (i,j) point on the x,y-plane has altitude M(i,j)?
What I did was
x = 1:1:imax;
y = 1:1:jmax;
[x,y] = meshgrid(x,y);
z=M;
[c,h] = contour(x,y,z,100);
clabel(c,h,'manual');
But it doesn't seem to be right…
(If the plotting bit is right, then there must be something else the wrong with the program!)
1 commentaire
Walter Roberson
le 15 Avr 2012
It isn't a good idea to overwrite x and y with meshgrid(x,y), in the sense that it is confusing to the reader.
Réponses (1)
Wayne King
le 15 Avr 2012
When you say "discrete" contour plot, do you mean something like
z = abs(round(peaks(5)));
bar3(z,0.3);
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