Make a 2D Plot with 3 variables
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Hi,
I have an equation for a variable R that is dependent on two variables x and y. I solved the equation and have a list of values for R.
How do I plot R with respect to x and y. I can't find a way to specify x and y axis that correspond to the R values.
Thanks.
3 个评论
Walter Roberson
2020-9-4
How do I plot R with respect to x and y
That sounds as if you have two independent variables and one dependent variable. That would require a 3D plot, unless you wanted to do overlay two different independent variable axes on the same plot (see plotyy() and yyaxis() )
Abinav
2020-9-4
Arthur Roué
2020-9-4
回答（1 个）
KSSV
2020-9-4
Read about contour, countourf, pcolor.
[X,Y,Z] = peaks(100) ;
figure
pcolor(X,Y,Z) ; sjading interp ; colorbar
figure
contour(X,Y,Z)
figure
contourf(X,Y,Z)
% 3d representation
figure
surf(X,Y,Z)
If you don't want to use X, Y use only Z. It will be plotted w.r.t to indices.
[X,Y,Z] = peaks(100) ;
figure
pcolor(Z) ; sjading interp ; colorbar
figure
contour(Z)
figure
contourf(Z)
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