Why the polar contour plot are reversly showed?

1 view (last 30 days)
Hi,
I'm wondering why the ploar contour plot are reversly showed.
According to the data, Carbon.mat
The values are monotonically decreased, but contour figure showes reversely.
It seems quite strange, I have no idea about it.. I flipped the matrix but it doesn't work.
The graph is the result of running below codes, as you see in the figure value between core and surface are flipped..!
x = linspace( 0, 49 , 50 ) ;
theta = ( 0 : 0.5 : 90 ) * (pi/180) ;
[ th, r ] = meshgrid (theta, Carbon) ;
surf ( r.*cos(th), r.*sin(th), repmat(Carbon(:), 1, size(th,2)), 'linestyle', 'none' ) ;
view(2) ; grid off ; colorbar ;
Anyone could help me?
Thanks you in advances :D

Accepted Answer

Walter Roberson
Walter Roberson on 20 May 2021
[ th, r ] = meshgrid (theta, Carbon) ;
Should be meshing theta and x.
Consider using pol2cart()

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by