![]() |
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: data management - changing every 1st encountered of a str data content of a var
From
Steven Samuels <[email protected]>
To
[email protected]
Subject
Re: st: data management - changing every 1st encountered of a str data content of a var
Date
Tue, 6 Jan 2009 21:08:30 -0500
It will not uniquely identify the first occurrence there are triplets
or longer runs. How would an analyst know there are none?
-Steve
On Jan 6, 2009, at 8:00 PM, Ashim Kapoor wrote:
i think it does identify the first occurance,
here is the output
+---------------------------------------------+
| var1 j |
|---------------------------------------------|
1. | monopolar monopolar |
2. | bipolar bipolar |
3. | bipolar bipolar |
4. | bipolar bipolar |
5. | monopolar monopolar |
|---------------------------------------------|
6. | nodiathrm nodiathrm |
7. | diathermy[2] diathermy[1] |
8. | diathermy[2] diathermy[2] |
9. | bipolar bipolar |
10. | monopolar monopolar |
|---------------------------------------------|
11. | diathermy[2] diathermy[1] |
12. | diathermy[2] diathermy[2] |
13. | . . |
14. | . <- denotes missing . <- denotes missing |
15. | . . |
|---------------------------------------------|
16. | monopolar monopolar |
17. | diathermy[2] diathermy[1] |
18. | diathermy[2] diathermy[2] |
19. | . . |
20. | . . |
+---------------------------------------------+
no ??
Thank you,
Ashim
On Tue, Jan 6, 2009 at 6:20 PM, Ashim Kapoor
<[email protected]> wrote:
I would do: -
Suppose your variable is called var
gen j=var
replace j="diathermy[1]" if j[_n+1]=="diathermy[2]" & j=="diathermy
[2]"
Then j would have what you want.
I think this should do it.
Thank you,
Ashim.
ue, Jan 6, 2009 at 1:22 PM, b. water <[email protected]> wrote:
dear all,
stata 8.2 xp pro,
i have a var like this:
monopolar
bipolar
bipolar
bipolar
monopolar
nodiathrm
diathermy[2]
diathermy[2]
bipolar
monopolar
diathermy[2]
diathermy[2]
.
. <- denotes missing
.
monopolar
diathermy[2]
diathermy[2]
.
.
what i want to achieve is for every first encountered diathermy
[2] to be changed to diathermy[1], while leaving the second
occurence as diathermy[2]. is this possible in stata? if it can
be done, would appreciate advice/help on how to achieve it.
thank you,
bw
_________________________________________________________________
It's the same Hotmail(R). If by "same" you mean up to 70% faster.
http://windowslive.com/online/hotmail?
ocid=TXT_TAGLM_WL_hotmail_acq_broad1_122008
*
* 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/
*
* 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/
© Copyright 1996–2024 StataCorp LLC | Terms of use | Privacy | Contact us | What's new | Site index |