Re: st: Overwritten?

[Nick Cox <njcoxstata@gmail.com>]

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Side details first:

A convention suggested for Statalist is to use notation such as -foo-
to flag names of commands, variables, etc. as used in Stata. That way,
for example, the word

replace

is to be understood as just ordinary English but the word

-replace-

is easy to spot as something that could be typed in Stata.

A convention is just that, but I like the Statalist convention, and
have often commended it. The different convention you're introducing
here of using -FOO instead does not strike me as a good one, if only
for the reason that upper case is usually not idiomatic Stata, but
that's a personal view.

For the record, -sroot- here is from Stata Journal 9(3) 2009.

The nub of the matter I think is this. The program -srootfix-  by
Sergiy Radyakin  -preserve-s your original data, does some work and
when it's done -restore-s the original data. Thus it's futile adding
new variables to the dataset after -preserve-, as they will just
disappear at the -restore-. The -restore- is not explicit in the code,
but it's automatic given the -preserve-. The fact that -preserve-
requires a -restore- for the fix you originally asked for is explicit
in http://www.stata.com/statalist/archive/2013-11/msg00103.html

Short of fixing a clone of -sroot- properly so that you don't need a
work-around, or asking the original author to do that for you, it
seems that you would need to -save- the dataset you create each time
and then -append- them all.

Fixing this properly is the better solution, as then your overall
problem should yield to -statsby-.

Nick
njcoxstata@gmail.com


On 30 December 2013 21:59, Francis, Richard N <rnfrancis@utep.edu> wrote:

> Have an option within a called program -SROOTFIX which generates residuals for a regression command.
>
> However, the variable containing the residuals -RES is absent.
>
> The called program -SROOTFIX actually calls another program -SROOT.
>
> Separate execution of -SROOT retains the residuals variable -RES, which suggests that something within the -SROOTFIX pgm overwrites the residuals variable -RES.
>
> The master program is as follows:
>
>  forval i = 1/`limit' {
>          display "Iteration of `i' of `limit"
>          replace which = "`: label (id) `i''" in `i'
>          srootfix fcf if id == `i' , residuals(res)
>                  qui foreach v in Z14 Z24 Z34 Z4t Z3t Z2t Z1t {
>                   replace `v' = r(`v') in `i'
>          }
> }
>
> I have executed the program with the -replace command.
>
> However, the residuals variable -RES continues to be absent.
>
> The contents of -SROOTFIX are as follows:
>
> *! By Sergiy Radyakin, 2013
> *! Fixes problem of -if- modifier [suspected] not working in public (SJ) version of -sroot-.
> ** See http://www.stata.com/statalist/archive/2013-11/msg00366.html
>
> program define srootfix
>    version 9.2
>    syntax varname(ts) [if] [in] ,[*]
>    preserve
>    marksample touse
>    keep if `touse'
>    sroot `varlist' , `options'
> end
>
> ** end of file **
>
> Any ideas for the absence of the residuals variable -RES are greatly appreciated.
>
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