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Re: AW: st: local containing (all) variables' names in a dataset
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From |
"Eric A. Booth" <[email protected]> |
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To |
[email protected] |
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Subject |
Re: AW: st: local containing (all) variables' names in a dataset |
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Date |
Tue, 18 Aug 2009 09:39:01 -0500 |
Thanks for the clarification, Nick. I made the erroneous assumption
that an increase in the number after -ds- (e.g., ds2, ds3, ds5...)
meant newer versions of the program.
Since -ds- is now an undocumented/unofficial command, I am curious
whether there are other commands that have its functionality. In the
"previously documented" link in the -ds- help file it says:
" Previously documented commands are commands of Stata from a previous
release that are no longer documented because they have been
superseded by more recent, better commands. "
I see that you can grab a c(varlist) from commands like -desc- and you
could probably use extended macro functions to piece together what -
ds- does, but is there another command that has -ds- 's functionality
built in & supersedes -ds- ??
Thanks,
Eric
__
Eric A. Booth
Public Policy Research Institute
Texas A&M University
[email protected]
Office: +979.845.6754
On Aug 17, 2009, at 3:15 PM, Nick Cox wrote:
Thanks to Eric and to other friends of -ds- for various plugs.
There is some risk here of various small confusions. Let me clarify.
1. The official version of -ds- is the latest version there is. It
incorporates all my contributions that have lasting value, in my view
that is.
2. Otherwise this is the story:
ds5 on SSC is for Stata 5.
ds2 on SSC and in STB-56 is for Stata 6.
ds2 in STB-60 is for Stata 7.
ds3 on SSC is for Stata 7.
So, unless you are using an ancient Stata, the previous versions are
of
no current interest. They aren't even of historic interest! The key
point is that both the STB and SSC are archives, and thus inevitably
contain some superseded and obsolete stuff.
Nick
[email protected]
Eric A. Booth
It's been updated to newer versions by Nick Cox--see -ds3- and -ds5-
ssc install ds3
ssc install ds5
On Aug 17, 2009, at 1:06 PM, David Jacobs wrote:
But -ds- still can be found after -help-
Martin Weiss
" a real hidden gem"
Now demoted to "previously documented" status in Stata 11, though.
Grrr....
Augusto Cadenas
thank you very much for these quick answers. -ds- seems to
do a very fine job, a real hidden gem, as Martin wrote. (and yes,
I'm
aware that I'm replacing the original dataset.)
On Mon, Aug 17, 2009 at 3:49 PM, Martin Weiss<[email protected]>
wrote:
On -ds- also see
http://www.stata-journal.com/article.html?article=dm0040
Scott Merryman
You can use macro list. See -help macrolists-
For example:
. sysuse auto ,clear
(1978 Automobile Data)
. ds
make mpg headroom weight turn
gear_ratio
price rep78 trunk length
displacement
foreign
. local a = r(varlist)
. local b make rep78
. local c:list a - b
. disp "`c'"
price mpg headroom trunk weight length turn displacement
gear_ratio foreign
On Mon, Aug 17, 2009 at 8:38 AM, Augusto Cadenas
I have to collapse a series of datasets and I would appreciate
your
help. The issue is that these datasets have different variables,
but
always the same variable by which I want to collapse. So I have
to run
the following command:
collapse (mean) id (sum) [all other variables here], by(name)
And I would like to embed this in a foreach loop of the type
local datasets `"dataset1 dataset2 dataset3"'
foreach X of local datasets {
use `X', clear
collapse (mean) id (sum) [all other variables here], by(name)
save, replace
}
The issue for me is how to create a local that contains the
names of
all variables in each dataset, except for "name" and "id". Any
suggestions are appreciated!
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