st: using pwd in an if statement

["Christopher W. Ryan" <cryan@binghamton.edu>]

If I am in a directory, say C:data\scholar\Hannah, and I type

-cd Hannah-

I get an error message, as one might expect.

I am just learning to use .do files for the bulk of my analyses and data 
manipulations, a la Svend Juul's great book.  I usually try to -cd- to 
the relevant project directory somewhere near the begining of a .do 
file, then open the data file.

But if I am *already in* that directory when I run the .do file, Stata 
gives the same sort of error:

cd Hannah
unable to change to Hannah
r(170);
end of do-file

Is there a way to cd on a conditional basis, such as "if I'm not already 
in the Hannah directory, then change to it"?  Would this require using 
something like

if c(pwd) !=


Since all of my project files are nested under a single directory for 
research projects, I suppose I could always put in my do-files a -cd- to 
that directory before the -cd- to the particular project directory.

--
Christopher W. Ryan, MD
SUNY Upstate Medical University Clinical Campus at Binghamton
and Wilson Family Practice Residency, Johnson City, NY
cryanatbinghamtondotedu
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"If you want to build a ship, don't drum up the men to gather wood, 
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vast and endless sea."  [Antoine de St. Exupery]

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