st: RE: AW: renaming using the file name

["Nick Cox" <n.j.cox@durham.ac.uk>]

I would think about doing it a different way. 

At the top of the program, initialise a file number 

local f = 1 

Make the -rename- command 

rename price_ price_`f' 

Put the _full_ file information in a variable label 

label var price_`f' `"`file'"' 

Bump up the file number after the -save-: 

local ++f

I think this makes just one assumption that needs thought, that the file information will fit in a variable label. If that's a problem, think of using a characteristic. 

Nick 
n.j.cox@durham.ac.uk 

Martin Weiss

You can get the filename via

*************
_getfilename "`c(filename)'"
di substr(r(filename),1,length(r(filename))-4)
*************

if you have a three letter suffix. I think there are better ways to do this,
but this is a first shot at the problem...

Linn Renée Naper

I am running the commands below, where I use a loop to insheet and change a
lot of files. The files are defined in `c(pwd)'. 
Everything works well, it is just one problem. 
Each file provides me with a new price variable price_ for the same set of
dates. Before I am 
going to merge all the different price files I therefore need to give each
price an unique name. Obviously
I prefer to do this within the loop.
In the command rename price_ ..... is there any way I can give the variable
a name referring to the filename in use.
F.ex if the filename is priceA20071108.txt, can I tell stata to rename the
variable price_ price A, or simply A (thus to pick certain parts of the
filename in use)?

Thanks for any advice on this matter. 


cd "C:\...\myfiles"
local files : dir "`c(pwd)'" files "*.txt"

foreach file in `files' {
	clear

	insheet using `file'	
	drop in 1/6
	drop v26 v27 v28 v29 v30 v31 v32 v33 v34
	renvars /.....

	replace  str_date= subinstr(str_date,".","-",.)
	
	g double date = date(str_date, "DMY")
	format date %td

	g year=year(date)

	keep if year==2007

	destring price_*, replace
	reshape long price_, i(date) j(hour)
	collapse (mean)price_, by(date)

	g year=year(date)
	g month=month(date)
	g day=day(date)
	g week=week(date)

sort date

	rename price_ "THIS IS WHERE I NEED HELP"
	cd "C:\ \new_files"
	save "`file'.dta", replace

cd "C:\...\myfiles "

}


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