How to draw a Motor efficiency map having speed, torque and efficiency?

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I'm looking for a way to draw a motor efficiency map.
I have a 1x1 vector for each: speed, torque and efficiency.
I need an efficiency map like this:
I tried with contour command but I'm getting a totally different rapresentation from what I need.
Thank you in advance!

Answers (1)

J Chen
J Chen on 8 Feb 2022
Use contour(x,y,z), where x, y need to be in grid corrdinate. You can study the following example for the grid coordinate
x = 1:3;
y = 1:5;
[X,Y] = meshgrid(x,y)
Next get z for each (x,y) pair
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