# How to change the camera position and view angle?

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john le 18 Avr 2013
I am doing a structured light simulation. I need to look at a 3d object at different angle.The object does move,only camera moves. So I use
view([0 90]);
CameraPosition=([100 5000 2000]);
but it seems won't work;How can I set the camera position and direction easily?
%This program is to simulate different discontinuity and its struct light
%image
clear;clc;close all;
X=[0:0.4:200];
Y=[0:0.4:100];
[x,y]=meshgrid(X,Y);
M=length(X);
N=length(Y);
z=zeros(N,M);
%z(find(X<60))=0;
Mid1=fix(M/4);
Mid2=fix(M/2);
for k=Mid1:Mid2
z(:,k)=z(:,k)+0.1*(k-Mid1);
end
for k=Mid2+1:M
z(:,k)=z(:,k)+0.1*(Mid2-Mid1);
end
figure(1);
mesh(x,y,z)
f0=0.02;
I1=cos(2*pi*f0*x);
I2=cos(2*pi*f0*x+z);
figure(2);
subplot(2,1,1);
imshow(I1);
subplot(2,1,2);
imshow(I2);
figure(3);
colormap(Gray);
mesh(x,y,z,I2);
view([0 90]);
CameraPosition=([100 5000 2000]);
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### Réponses (1)

Jan le 18 Avr 2013
You do not set the camera position, but only assign a value to a variable, which is called CameraPosition. Of course this does not change anything in the graphics. Try:
set(gca, 'CameraPosition', [100 5000 2000]);
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