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how to get the index of the maximum element in each row for a 2D matrix efficiently [message #36301]

Fri, 29 August 2003 10:34

xje4e
Messages: 18
Registered: February 2002

Junior Member

Hi, there,

Suppose we have a 2D dimension matrix A(i,j), I want to get the index
of the max element in each row.

Basicly, we can do a for loop on each row, then use 'max' function to
get the index for each row. But for a matrix having many rows, that
will be pretty slow-->not efficient. Is there a function that can
return what I want if I input a 2D matrix.

In the previous version, 'total' function can only get the total
values of the whole matrix. Now it can get the total values on each
dimension by setting the keyword 'dimension'.

So how is 'max' working?

Best regards,

Jin

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