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 Normalize matrixes

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T O P I C    R E V I E W
thomaspreuth Posted - 05/13/2008 : 03:44:09 AM
Origin Version (Select Help-->About Origin): 7.5 SR4
Operating System: Windows 2000

Hello Forummembers,

I am searching for an idea how to normalize values in a matrix.
Does anybody know a solution?
Have already searchd the forum, but did not find an appropriate answer yet.
Thanks in advance,
thomas
1   L A T E S T    R E P L I E S    (Newest First)
greg Posted - 05/14/2008 : 11:34:53 AM
You can do math on a matrix the same way you can with a dataset. The question is : How do you want to Normalize?
Normalize to a range? (Like 0 to 1 or -1 to 1 or 0 to 100 ..)
Divide by a value? (like Maximum, Minimum or Standard Deviation)

There is a function that will help get some basic values:
sum(matrix1);
SUM.MAX=;
SUM.MEAN=;
SUM.MIN=;
SUM.SD=;

With that, you could do something like:
matrix1-=SUM.MIN;
matrix1/=(SUM.MAX-SUM.MIN);
which would normalize the matrix to the range 0 to 1.

The notation
matrix1-=SUM.MIN;
is shorthand for
matrix1=matrix1-SUM.MIN;

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