controlling the spread of contour lines
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I have the following code which plots a filled contour. I want more closed contours towards the center of the figure because they are more important to me. How can I control the spacing of the contour lines?
% Function to plot contours
x1=-5:0.1:5;
x2=-5:0.1:5;
[a ,b]=meshgrid(x1,x2);
f=(2.*(a).^2)-(1.05.*(a).^4)+((a.^6)./6)+(a.*b)+(b.^2);
[c,h]=contourf(a,b,f,20);
clabel(c,h);
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Answers (1)
Star Strider
on 9 Nov 2018
You can define the contour levels with a vector.
Example —
% Function to plot contours
x1=-5:0.1:5;
x2=-5:0.1:5;
[a ,b]=meshgrid(x1,x2);
f=(2.*(a).^2)-(1.05.*(a).^4)+((a.^6)./6)+(a.*b)+(b.^2);
lvls = exp(-10:0.1:7.5); % Define Contour Levels
[c,h]=contourf(a,b,f,lvls);
clabel(c,h);
The ‘lvls’ vector creates an exponentially-increasing set of contours. You can use any vector you want.
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