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st: how to count non-numeric obs


From   "Radu Ban" <rban@nber.org>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: how to count non-numeric obs
Date   Thu, 5 Dec 2002 13:20:02 -0500

Dear all,

I have a flat (ASCII) dataset of 130 columns and roughly 250,000 lines. In
theory all the observations should be numeric, but just by visual inspection
I can tell that's not the case. So now I want to count the number of
non-numeric observations by column.
I'm trying to use -infix-, i.e.
infix var1 1 var2 2 .... var130 130 using ../rawdata/raw.txt

Is there a quick way to put each column into a variable (other than typing
all the indivdual variable names and column numbers), and reading in the
dataset only once?
I know I can do sth like

forvalues i=1/130 {
    infix var`i' `i' using ../rawdata/raw.txt, clear
    sum var`i' *to see how many numeric obs i have
    }

but this would mean having to read in a sizeable dataset 130 times which
would take a long time.

thanks a lot,

Radu Ban



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