Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
st: RE: Seeing if the last observation equals previous observations from a variable X
From
"Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
st: RE: Seeing if the last observation equals previous observations from a variable X
Date
Sat, 24 Apr 2010 23:44:45 +0200
<>
You can create a dummy denoting any observation, other than the last one,
that is equal to the string in the last one:
*******
clear*
input str10 mystrvar
"hello"
"good-bye"
"hello"
"good-bye"
"hello"
end
//want comparison with everybody else...
gen byte dupllast=mystrvar==mystrvar[_N] if _n!=_N
list, noo
cou if dupllast==1
*******
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of George Chioran
Sent: Samstag, 24. April 2010 23:06
To: [email protected]
Subject: st: Seeing if the last observation equals previous observations
from a variable X
Dear Statalisters,
I want to know how I
could see if the last observation in a variable X (containing strings) is
equal
to other observations in the variable. I know I can use X[_N] to identify
the
last observation in the variable, but how could I see if I have a previously
identical observation to X[_N] in the variable?
Thank you a lot for
the help,
George
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/