image processing, data stimulation

2018 3 19
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更新时间：2018 3 19
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hi, i want to generation an matrix that simulate an image of size 198*211*3 so i used this code:
clc
close all
clear all
for i=1:4;
for j=1:4;
x(i,j)=rand*100;
if x(i,j)>=0 && x(i,j)<=255;
x
end
end
end
is this work correct? thank you

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Walter Roberson
Walter Roberson 2018-3-19

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x = randi([0 255], 198, 211, 3, 'uint8');

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in facet i used this solution like this:
x=randi([0 255],198,211)
but I thought it's wrong; but now you Improve it in your solution, thank you sir, thank you so much.

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