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Re: st: how to read very long text lines?


From   Ryan Kessler <ryan.kessler.stata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: how to read very long text lines?
Date   Fri, 8 Mar 2013 01:30:20 -0500

Hi Tony,

The key here is to steer clear of the "=" sign; see -help macro-,
-help limits-, and -help extended_fcn-.

local long ""
forval i=1/500 {
	local long "`long' `=`i'^2'"
}
di "`long'"
di length("`long'")
di "`: length local long'"

Related discussion -->
http://www.stata.com/statalist/archive/2011-09/msg00973.html

Best,

Ryan Kessler

On Thu, Mar 7, 2013 at 11:22 PM, Li Chuntao (Tony) <leechtcn@gmail.com> wrote:
> Dear Listers,
>
>     I want to use Stata to read a text file line by line. Suppose the
> file is d:\temp.txt. one of the line i specially interested is very
> long, more than 1000 characters. I use the following code to read:
>
> capture file close myread
> file open myread using d:\temp.txt , read text
> file readmyrea line
> while r(eof)==0 {
>   local linenum = `linenum' + 1
>   local myline=`" `macval(line)'"'
>   disp length(`"`macval(myline)'"')
>   file myrea hexun line
>
> }
> file close hexun
>
> It seems that the maximium length for a string here is only 240.
>
> Is it possible to change it to longer?
>
> thanks
>
> Tony
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