Hello,
Couldn't think of a better subject line. Rather than a matrix like

x,y
..,..
.,..

I have a matrix like
x,y,n,
..,..,..,
..,..,..

and so on. Also, sum(n) is roughly few hundred million. The number of rows
is <1MM

Are they routines to fit a 2d kde estimate to data provided in this form?
I can sample from the data according to weights given by 'n' but i am
curious if there is something that can use all the data when given a
structure of this form.

Regards
Saptarshi

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