mean function gives an error but not median

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Yoon
Yoon 2025-1-9
评论： Star Strider 2025-1-9
I am trying to calculate mean, median and 90% percentile of arrays. Median and prctile work fine but mean gives an error message:
Array indices must be positive integers or logical values.
Teh error comes from Averted_Deaths_Array(ij,1) = mean(Averted_Deaths(ij,:)); in the following code.
The code is simple.
TotalDeathsArray = rand(12,2500);
% Calculate Averted cases
for i=1:2500
%2: PCV13 1+1, 3: PCV15 2+1, 4: PCV15 1+1
% 1+1
Averted_Deaths(1,i) = TotalDeathsArray(2,i) - TotalDeathsArray(4,i);
Averted_Deaths(2,i) = TotalDeathsArray(6,i) - TotalDeathsArray(8,i);
Averted_Deaths(3,i) = TotalDeathsArray(10,i) - TotalDeathsArray(12,i);
% 2+1
Averted_Deaths(4,i) = TotalDeathsArray(2,i) - TotalDeathsArray(3,i);
Averted_Deaths(5,i) = TotalDeathsArray(6,i) - TotalDeathsArray(7,i);
Averted_Deaths(6,i) = TotalDeathsArray(10,i) - TotalDeathsArray(11,i);
end
Averted_Deaths_Array = zeros(6,3);
for ij=1:6 % Averted QALY
%Averted QALY when changing with New 1+1
Averted_Deaths_Array(ij,1) = mean(Averted_Deaths(ij,:));
Averted_Deaths_Array(ij,2) = median(Averted_Deaths(ij,:));
Averted_Deaths_Array(ij,3) = prctile(Averted_Deaths(ij,:),90);
end
  2 个评论
Torsten
Torsten 2025-1-9
编辑：Torsten 2025-1-9
Works for me (see above).
Maybe you use a variable named "mean" or you have a file named "mean.m" in your working directory. If so, rename the variable/file.
Yoon
Yoon 2025-1-9
Thank you!. When I loaded a mat file, there was an array called 'mean'. It works now.

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采纳的回答

Star Strider
Star Strider 2025-1-9
That you are getting theee error:
Array indices must be positive integers or logical values.
indicates that somewhere in your code you have a variable named ‘mean’. You need to name it something different that makes sense in the context you are using it.
Run thiis in your Command Window or a script:
which mean -all
to confirm that. If that is true, the first entry in the results should be somethiing like:
mean is a variiable.
.

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