Dirk,
(1) Use `rank', `nomiss' and `count' instead of rank, nomiss and count
(2) Define `1' using -tokenize `varlist'.
R.
----- Original Message -----
From: Dirk Nachbar
To: statalist
Sent: Wednesday, July 19, 2006 10:43 AM
Subject: st: program to calculate specific percentiles
All
here is a program to calculate specific percentiles. unfortunately it
reports a syntax error and I don't know why.
capture program drop perc
program define perc
version 8.2
syntax varlist [if] [in], [by(name)] groups(int 10) gen(name)
marksample touse
qui count if `touse'
if r(N) ==0 {
error 2000
}
if `groups'>100 | `groups'<1 {
di as error "there must be between 1 and 100 groups"
exit 198
}
qui {
tempvar rank nomiss count
if `by' != "" {
bysort `by': egen rank=rank(`1')
bysort `by': gen nomiss=(`1' != .)
bysort `by': egen count=sum(nomiss)
bysort `by': gen `gen'=rank/count*`groups'
}
else {
egen rank=rank(`1')
gen nomiss=(`1' != .)
egen count=sum(nomiss)
gen `gen'=rank/count*`groups'
}
}
di "the variable " `gen' " was created"
end
Dirk Nachbar
Assistant Economist
Pensim2
Department for Work and Pensions
Level 4, The Adelphi
1-11 John Adam St
WC2N 6HT London
020 796 28531
********************************************************************** This
document is strictly confidential and is intended only for use by the
addressee. If you are not the intended recipient, any disclosure, copying,
distribution or other action taken in reliance of the information contained
in this e-mail is strictly prohibited. Any views expressed by the sender of
this message are not necessarily those of the Department for Work and
Pensions. If you have received this transmission in error, please use the
reply function to tell us and then permanently delete what you have
received. Please note: Incoming and outgoing e-mail messages are routinely
monitored for compliance with our policy on the use of electronic
communications.
**********************************************************************
The original of this email was scanned for viruses by Government Secure
Intranet (GSi) virus scanning service supplied exclusively by Cable &
Wireless in partnership with MessageLabs.
On leaving the GSI this email was certified virus free.
The MessageLabs Anti Virus Service is the first managed service to achieve
the CSIA Claims Tested Mark (CCTM Certificate Number 2006/04/0007), the UK
Government quality mark initiative for information security products and
services. For more information about this please visit www.cctmark.gov.uk
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
