What should I do?-Array indices must be positive integers or logical values.
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Worrakarn Panyaboon
am 26 Aug. 2021
Kommentiert: Worrakarn Panyaboon
am 26 Aug. 2021
My code
clc
clear
close all
a=imread('Screenshot_20210628.jpg');
g =rgb2gray(a);
arr=zeros(1,256);
[x,y,z]=size(g);
for i=1:x
for j=1:y
m=g(i,j);
arr(m)=arr(m)+1;
end
end
stem(arr);
Array indices must be positive integers or logical values.
Error in line 11
arr(m)=arr(m)+1;
1 Kommentar
Stephen23
am 26 Aug. 2021
It looks like you are writing your own histogram code. Is there a reason why you cannot just use one of these?:
To fix that error remember that MATLAB indexing starts at one, not zero.
Akzeptierte Antwort
Wan Ji
am 26 Aug. 2021
Hi,
g(i,j) may be zero, then m becomes zero. change it like this
clc
clear
close all
a=imread('Screenshot_20210628.jpg');
g =rgb2gray(a);
arr=zeros(1,256);
[x,y,z]=size(g);
for i=1:x
for j=1:y
m=g(i,j)+1;
arr(m)=arr(m)+1;
end
end
stem(arr);
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