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

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:

https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs38313-019-0133-x/MediaObjects/38313_2019_133_Fig1_HTML.jpg

I tried with contour command but I'm getting a totally different rapresentation from what I need.

Thank you in advance!

Answer 1

[J Chen]

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

[Simone Scerra]

Thank you for your reply. It gives me an error on Z (it needs to be a 2x2 vector) but I only have a column of data from the manufacturer...

[Sudha Panthi]

Did you solve it? I am also looking for the solution.