How do I create a scatter plot of every value combination of three vectors?

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Luke Mason
Luke Mason 2018-4-6
回答： Luke Mason 2018-4-12
I have three vectors each corresponding to a position of a seat in a theater. x = [0:60], y = [0:60] and z = [y.*5]. So I have an x vector, a y vector, and a z vector. I need to be able to plot every combination of the vectors because when I use scatter3(x,y,z) it plots x(n), y(n) and z(n), creating a diagonal line of seats. So I also need it to plot x(n), y(n+1), z(n+1).

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采纳的回答

Walter Roberson
Walter Roberson 2018-4-9
[X, Y, Z] = ndgrid(x, y, z);
scatter3( X(:), Y(:), Z(:));
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Luke Mason
Luke Mason 2018-4-12
编辑：Walter Roberson 2018-4-12
clear; clc;
x = [0:90];
x = [-7:7];
z = 30*tand(12.5)
M = z.*y
amountToAdd = size(x);
L = repmat(M, amountToAdd(2), 1);
for i = [1:length(x)]
for j = [1:length(y)]
d(i,j) = sqrt((x(i)).^2+(y(j)).^2+(z*y(j))^2)
end
end
dB = 10.*log10(1./d.^2)+100;
surf(y,x,L, dB)
This is my current code. I've attached something similar to what I'm looking for but I have it as a surface and I need it as a scatter plot. I think I'm probably just not being clear with what I'm looking for
Walter Roberson
Walter Roberson 2018-4-12
Try the below and suggest how you want it changed.
x = 0:90;
y = -7:7;
z = 30*tand(12.5);
M = z.*y;
amountToAdd = size(x);
L = repmat(M, amountToAdd(2), 1);
for i = 1:length(x)
for j = 1:length(y)
d(i,j) = sqrt((x(i)).^2+(y(j)).^2+(z*y(j))^2);
end
end
dB = 10.*log10(1./d.^2)+100;
[X, Y] = ndgrid(x, y);
scatter3(Y(:),X(:),L(:),10,dB(:));

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更多回答（2 个）

Sumeet Gadagkar
Sumeet Gadagkar 2018-4-9
Hey Luke,
Have you considered looping through the values of your matrix and plotting for each of the values?
It would go something like this -
% x = 0:4;
y = 0:4;
z = y*5;
q = ones(5,1);
q = q';
for i = 1:length(z)
for j = 1:length(y)
scatter3(x,y(j)*q,z(i)*q)
hold on
end
end
end
Hope this helps!
  1 个评论
Luke Mason
Luke Mason 2018-4-11
That is close to what I'm looking for, but I need the z values to only appear once so instead of a cube, I would want it to be a diagonal plane that increases in z values as the y values increase

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Luke Mason
Luke Mason 2018-4-12
thats perfect, thank you

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