Three variables (two independent) 3D plotting

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I want to plot B, L, and R mutually at the same time (using both 'for' loop).
clear all
clc
R=[];
for B=-20:20;
M=1;
X=M+B;l
T=[];
for L=-10:10;
N=2;
Y=N+X;
r=B+Y+L^2;
T=[T r];
end
R=[R T];
end

Accepted Answer

dpb
dpb on 27 Feb 2021
M=1;
N=2;
flg=true;
for B=-20:20;
X=M+B;l
T=[];
for L=-10:10;
Y=N+X;
r=B+Y+L^2;
scatter3(B,L,r,'*')
if flg, flg=~flg; hold on, end
end
end
results in
More efficient would be and left as "exercise for student" is to vectorize and use meshgrid or internal array expansion.

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