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Re: st: pspline help

From   Nick Cox <>
To   "" <>
Subject   Re: st: pspline help
Date   Sun, 15 Dec 2013 19:17:42 +0000

This is a reference to -pspline- from SSC.

The Statalist FAQ, which you are asked to read before posting, explains:

"Say what commands you are using. If they are not part of official
Stata, say where they came from: the SJ/STB, SSC, or other archives.
This helps (often crucially) in explaining your precise problem, and
it alerts readers to commands that may be interesting or useful to

In this case it's my understanding that neither of the authors is a
member of Statalist. My advice is to contact Ben Jann as the first
author of the program.

On 15 December 2013 18:38, Manisha Chakrabarty <> wrote:
> Dear Roberto G. Gutierrez
> In your pspline , do you have any technical note for that? for example how
> to choose knots and positins of it.Or do you have any example. do file?
> In my case I have to estimate semiparametric model using pspline with some
> covariates.
> Now while it does it for all observations in your dats set, if for example I
> wish to incorporate the location information of observational units (i.e,
> for each observation i take all those neighbouring observation depending on
> whether they share a common boundary of district), then the knot positions
> will change, right?
> This  check has to be done  for all observations i and then we get final
> estimate of nonparametric part as a spline as well as coefficients of
> parametric part. so if i=1,..n, we will get out final result for n
> observations, but pspline should be done by considering the neighborhood
> observsations for ecah i.
>  what should I do in that case?
> Best
> Manisha
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