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3D mesh plot with colour

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Salad Box
Salad Box 2018-3-13
Hi
I have some L*, a*, b* data. Sample data look like something below.
Can I possibly do a 3D colour plot with these data like something like this (shown below)?
The thing that I don't quite understand is that to use meshgrid and then surf. It looks like there needs to be an equation but here L a and b are independent values. L is not a function of a and b. So it seems like using meshgrid then surf is not right? Am I thinking wrongly?
Can someone help please?

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