How do I create a colormap for a flat plane?

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Jossie
Jossie 2019-9-20
评论： Jossie 2019-9-20
I am creating a flat plane, I want the color of the plane to be a gradient. I tried using the colormap copper but it keeps it black because it is flat. How can I adjust the color?
[x,y] = meshgrid(1:1250,1:760);
z = zeros(size(x));
colormap('copper')
surf(x,y,z-1)
  2 个评论
Geoff Hayes
Geoff Hayes 2019-9-20
Jossie - what do you expect the output to look like? Can you us how you expect the gradient to be applied to your 2D data?
Jossie
Jossie 2019-9-20
ChangeDirectionOfColorTransitionsExample_03.png
Not necesarly this color scheme, but I want my flat plane to look something like this. Go from a dark color to a lighter one (without the grid). As I mention my plane is flat which does now allow me to variate the color.

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Bjorn Gustavsson
Bjorn Gustavsson 2019-9-20
Use something like this:
surf(x,y,z-1,x+0.5*y),shading flat
You can use whichever linear combination of x and y to have your gradient in your desired direction.
HTH

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