Find which matrix row contains average minimum value
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I have DNI data stored in a 288 x 365 matrix.
I need to find which row contains the average minimum value (all collumns).
Thanks
2 个评论
the cyclist
2021-9-21
I, for one, don't quite understand what you need. Can you post a small example (e.g. 3x3 matrix), and step through the logic of what you need?
Lumbersnack
2021-9-21
采纳的回答
One approach —
M = rand(288,365);
AMV = mean(min(M)) % Average Minimum Value
[val,idx] = min(abs(M(:)-AMV)) % Closest Element Value & Linear Index
[row,col] = ind2sub(size(M),idx)
An exact match (exact equality) is highly unlikely.
Experiment to get the result you want.
.
2 个评论
Lumbersnack
2021-9-21
Star Strider
2021-9-21
My pleasure!
MATLAB uses column-major operations, so mean will take the mean of each column by default. That is how I interpreted:
‘I need to find which row contains the average minimum value (all collumns).’
To take the mean of the rows instead:
AMV = mean(min(M),2) % Average Minimum Value
The rest of the code is unchanged, since it will return both the row and column of the closest match.
.
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