# How can I convert 100 X Y and Z coordinates generated randomly in the form of a 100x100x100 matrix

3 views (last 30 days)
Tamoor Shafique on 30 Oct 2020
Commented: Matt J on 30 Oct 2020
close all
clear all
n = 100;
xm = 100;
ym = 100;
zm = 100;
x = 0;
y = 0;
z = 0;
for i=1:1:n
S(i).xd=rand(1,1)*xm;
XR(i)=S(i).xd;
S(i).yd=rand(1,1)*ym;
YR(i)=S(i).yd;
S(i).zd=rand(1,1)*zm;
ZR(i)=S(i).zd;
end
this gives me 100 random x, y and z-axis. I can plot the points but how can i group them as a 3D matrix of 100x100x100 such that matrix entries are (XR(i), YR(i), ZR(i))
Tamoor Shafique on 30 Oct 2020
1. XR(i), YR(i), and ZR(i) are 100 random coordinates each. for 100 iterations of i. so each iteration gives a 3d point.
2. yes the 100 points should on the 100 should be 1 that would do.
Matt J on 30 Oct 2020
yes the 100 points should on the 100 should be 1 that would do.
But that is what I gave you below.

Matt J on 30 Oct 2020
If you mean you want a 100x100x100 binary array A with one hundred randomly located entries where A(i,jk)=1, then
A=false(100,100,100);
A( randperm(numel(A),100) )=1;
whos A
Name Size Bytes Class Attributes A 100x100x100 1000000 logical
nnz(A)
ans = 100
Tamoor Shafique on 30 Oct 2020
I need 100x100x100 array of actual coordinates please for example (24,58,19) if thats possible. I know this might feel strange but this is the case
Tamoor Shafique on 30 Oct 2020
so instead of ones at the corresponding location i wish to display the actual value of point

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