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Subject: Re: need help with distance of coordinates
Date: Thu, 25 Nov 2010 10:33:04 +0000 (UTC)
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thanks alot~ it was very helpful for me.
and i've another question.
you told that it is difficult to remove the specific values what i want...
it's sounds sad...
is there  a way to translate the specific values to NaN ?
i know it is able to calculate the mean of 1 columns values with Nan using 'nanmean'
but i couldn't find a way how to calculate 1columns values divide by mean.
the result was Nan because the column contains Nan.
how to do this?
thank you everyone~~~