How do I change color diffusion in jet colormap?

Question

Bajdar Nouredine 2021-10-11

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1561426-how-do-i-change-color-diffusion-in-jet-colormap

回答： Kevin Holly 2021-10-11

I want to show the red color at the center of the sphere and the blue at the circumstances (i.e color distributed inversly)

%% Example data

x = (2:-0.1:0);

data = sin(x);

%% Shift the values towards the center, so you get a circle instead of an annulus.

rho = x-min(x);

%% Your meshgrid generation code.

theta = (0:360)*pi/180;

[th, r] = meshgrid(theta, rho);

%% Plotting the values

surf(min(x)+r.*cos(th), ...

min(x)+r.*sin(th), ...

repmat(data(:), 1, size(th,2)), ...

'linestyle', 'none');

view(2);

axis equal tight;

colorbar;

colormap jet;

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Answer 1

Kevin Holly 2021-10-11

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1561426-how-do-i-change-color-diffusion-in-jet-colormap#answer_806181

在 MATLAB Online 中打开

%% Example data
x = (2:-0.1:0);
data = sin(x);
%% Shift the values towards the center, so you get a circle instead of an annulus.
rho = x-min(x);
%% Your meshgrid generation code.
theta = (0:360)*pi/180;
[th, r] = meshgrid(theta, rho);
%% Plotting the values
surf(min(x)+r.*cos(th), ...
    min(x)+r.*sin(th), ...
    repmat(data(:), 1, size(th,2)), ...
    'linestyle', 'none'); 
view(2);
axis equal tight;
colorbar;
colormap jet;