[R] help "reshaping" dataframe

[Jim Lemon]

On 01/05/2013 10:15 AM, Andrea Goijman wrote:
...
Hi Andrea,
This may be what you want:

occ.data<-data.frame(year=rep(2003,20),Ruta=rep(202,20),
+  Point=c(3,4,1,1,2,3,4,1,4,5,1,3,4,5,1,4,5,10,7,8),
+  Site=c(rep(2021,17),rep(2022,3)),
+  specie=c("MICH","MICH","MISA","MOBO","MOBO","MOBO","MOBO",
+  "SILU","SILU","TYSA","ZEAU","ZEAU","ZEAU","ZEAU","ZOCA","ZOCA",
+  "ZOCA","MICH","MISA","MISA"),Pres=rep(1,20),
+  Rep=c(3,4,1,1,2,3,4,1,4,5,1,3,4,5,1,4,5,5,2,3))
 > library(prettyR)
 > stretch_df(occ.data,idvar="specie",to.stretch="Rep",
 >  ordervar="Pres",include.ordervar=FALSE)
   specie year Ruta Point Site Rep_1 Rep_2 Rep_3 Rep_4
1   MICH 2003  202     3 2021     3     4     5    NA
2   MISA 2003  202     1 2021     1     2     3    NA
3   MOBO 2003  202     1 2021     1     2     3     4
4   SILU 2003  202     1 2021     1     4    NA    NA
5   TYSA 2003  202     5 2021     5    NA    NA    NA
6   ZEAU 2003  202     1 2021     1     3     4     5
7   ZOCA 2003  202     1 2021     1     4     5    NA

Jim