Populating 2D meshgrid of a function of four variables

1 次查看（过去 30 天）

Valeri Aronov 2021-8-15

评论： Valeri Aronov 2021-8-16

I have a function:

function [y, Grad, Hess] = Target(x)

...

end;

where x's size is 4 (a vector of 4 variables).

How to plot a contour of Target() using a meshgrid of two variables? Something like this code:

xC1 = linspace(0.1, 1.9);

yR1 = linspace(0.1, 1.9);

[XC1, YR1] = meshgrid(xC1, yR1);

% this is wrong: [Z, ~, ~] = Target([XC1, 1, YR1, 1]); how to do it right?

contour(XC1, YR1, Z)

Matt J 2021-8-15

编辑：Matt J 2021-8-15

As long as you don't care about efficiency,

fun=@(x,y) Target([x,1,y,1]);
Z=arrayfun(fun, XC1,YR1);

Valeri Aronov 2021-8-16

Thanks, Matt, appreciated.

MATLAB Graphics 2-D and 3-D Plots Surfaces, Volumes, and Polygons Surface and Mesh Plots

在 Help Center 和 File Exchange 中查找有关 Surface and Mesh Plots 的更多信息

R2021a

Find the treasures in MATLAB Central and discover how the community can help you!

Translated by