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Re: st: dropvars.ado
From
Joerg Luedicke <[email protected]>
To
[email protected]
Subject
Re: st: dropvars.ado
Date
Tue, 15 Jan 2013 17:07:06 -0500
Perhaps something like this?
*----------------------------------------------------
cap program drop dropva
program define dropva
syntax namelist
local wc : word count `namelist'
local vlist1=""
local vlist2=""
forval i=1/`wc' {
local var : word `i' of `namelist'
cap confirm var `var'
if !_rc {
loc vlist1 `vlist1' `var'
}
else {
loc vlist2 `vlist2' `var'
}
}
cap drop `vlist1'
if "`vlist2'"!="" {
di in red "Warning, " as txt "the following variables are not found:"
di as res "`vlist2'"
}
end
*----------------------------------------------------
sysuse auto, clear
dropva headroom trunk foo
Joerg
On Tue, Jan 15, 2013 at 5:01 PM, Dimitriy V. Masterov
<[email protected]> wrote:
> Austin,
>
> Thanks for taking a stab at this. However, this won't quite work as I
> would like. I would like to drop variables when they exist, and ignore
> when they don't (and maybe with an error message). Your code will not
> work with phantom variables.
>
> DVM
>
>
>
> On Tue, Jan 15, 2013 at 1:49 PM, Austin Nichols <[email protected]> wrote:
>>
>> prog dropvars2
>> syntax [varlist]
>> version 6
>> for var `varlist': capture drop X
>> end
> *
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