2 TRUE FALSE
>11 4 12 6FALSE FALSE
>12 4 13 5FALSETRUE
>13 5 21 7 TRUE FALSE
>14 5 22 8FALSE FALSE
>15 5 23 5FALSETRUE
>16 6 21 2 TRUE FALSE
>17 6 22 4FALSE FALSE
>18 6 2
Hi R users,
I have a test dataframe ("file1," shown below) for which I am trying
to create a flag for the first and last ID record (equivalent to SAS
first.id and last.id variables.
Dump of file1:
> file1
id rx week dv1
1 1 11 1
2 1 12 1
3 1 13 2
4 2 11
requirePackage("Design") : This function requires theDesignpackage
In addition: Warning message:
there is no package called 'package' in: library(package, lib.loc =
lib.loc, character.only = TRUE, logical = TRUE,
Should I be using an additional package?
Any suggestions will b
I just noticed that two key pieces of information are not given by
the summary() command: N and SD. we are given the N missing, but
not the converse. I know these summary value can be obtained easy,
but can't understand why these two pieces of information are not
provided with the other inf
earch
>the list for similar questions, for example
>http://thread.gmane.org/gmane.comp.lang.r.general/44332/focus=44343
>
>
>>-Original Message-
>>From: [EMAIL PROTECTED]
>>[mailto:[EMAIL PROTECTED] On Behalf Of Gerard Smits
>>Sent: Sunday, January 21, 2007
looking for the
equivalent of SAS _n_ (I realize that I can use a variant of which to
identify an index value) as well as useful SAS features such as
first., last., retain, etc. Any help with this conversion appreciated.
Thanks,
Gerard Smits
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