color-coding a 2D plot
29 次查看(过去 30 天)
显示 更早的评论
Hello everybody,
I am wondering how we can plot a 2D figure,x vs. y, which the amplitude of a given mathematical function, let say f(x,y) where e.g. f=sqrt(x.^2+y.^2), is encoded with colors in 2D plot as if max(f) is shown with e.g. blue color and min(f) with red color.
thank you so much, --V
0 个评论
采纳的回答
Kevin Holst
2012-3-27
unfortunately shading interp doesn't seem to work on contourf so here's an inelegant solution to your problem.
[x,y] = meshgrid(-10:0.1:10,-10:0.1:10); % just to get some x and y values
z = sqrt(x.^2 + y.^2);
surf(x,y,z)
shading interp
set(gca,'cameraposition',[0 0 180]) % this essentially turns a 3d surface plot into a 2d plot
colormap(flipud(jet))
更多回答(2 个)
Kevin Holst
2012-3-27
how about:
[x,y] = meshgrid(-10:0.1:10,-10:0.1:10); % just to get some x and y values
z = sqrt(x.^2 + y.^2);
contourf(x,y,z)
colormap(flipud(jet))
Is that what you're envisioning?
0 个评论
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Scatter Plots 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!