Displaying 2 results from an estimated 2 matches for "rtmpq3enyj".
2008 Jun 07
1
Problem of installing Matrix
...erator
"Makefile", line 29: Need an operator
"Makefile", line 31: Need an operator
make: fatal errors encountered -- cannot continue
ERROR: compilation failed for package 'Matrix'
** Removing '/usr/local/lib/R/library/Matrix'
The downloaded packages are in
/tmp/Rtmpq3enyj/downloaded_packages
Updating HTML index of packages in '.Library'
Warning message:
In install.packages("Matrix") :
installation of package 'Matrix' had non-zero exit status
>
> sessionInfo()
R version 2.6.1 (2007-11-26)
i386-portbld-freebsd7.0
locale:
zh_CN.eucCN...
2008 Jun 06
6
Subsetting to unique values
I want to take the first row of each unique ID value from a data frame.
For instance
> ddTable <-
data.frame(Id=c(1,1,2,2),name=c("Paul","Joe","Bob","Larry"))
I want a dataset that is
Id Name
1 Paul
2 Bob
> unique(ddTable)
Will give me all 4 rows, and
> unique(ddTable$Id)
Will give me c(1,2), but not accompanied by the name column.