Hey , can you please help with the following problem. When running PS matching I get the following message.

SET SEED = 1234.

SET PRINTBACK=NONE.

Warning message: In library(cem, logical.return = TRUE) : there is no package called 'cem' Installing package into 'C:/ProgramData/IBM/SPSS/Statistics/24/extensions' (as 'lib' is unspecified) Warning: dependency 'randomForest' is not available There is a binary version available but the source version is later: binary source needs_compilation cem 1.1.17 1.1.20 FALSE installing the source package 'cem' trying URL 'http://cran.r-project.org/src/contrib/cem_1.1.20.tar.gz' Content type 'application/x-gzip' length 2153944 bytes (2.1 MB) downloaded 2.1 MB The downloaded source packages are in 'C:\Users\Shuja\AppData\Local\Temp\spss16696\RtmpKKeSZV\downloaded_packages' Warning messages: 1: running command '"C:/Program Files/R/R-3.2.0/bin/x64/R" CMD INSTALL -l "C:\ProgramData\IBM\SPSS\Statistics\24\extensions" C:\Users\Shuja\AppData\Local\Temp\spss16696\RtmpKKeSZV/downloaded_packages/cem_1.1.20.tar.gz' had status 1 2: In install.packages("cem", repos = "http://cran.r-project.org") : installation of package 'cem' had non-zero exit status Error in library(cem) : there is no package called 'cem' Warning message: In OK() : No warnings in estimation or matching procedure

Error: could not find function "imbalance"

Apparently, psmatchin3 requires the R cem package, which is not installed.

Try installing it this way.

begin program r.

install.packages('cem')

end program.

It will put up a list of sites to install from. Pick any convenient one.

You may get a nonzero status code from that install, but it may work anyway. After running that, try this to see if it is usable

begin program r.

library(cem)

end program.

Note: PSMATCHING3 is not from IBM.

Thank you Jon,

I have PSMatching_2. But running the syntax that you told me give me the following error. Can you please guide me.

begin program r.

install.packages('cem')

end program.

Installing package into 'C:/ProgramData/IBM/SPSS/Statistics/24/extensions'

(as 'lib' is unspecified)

Warning: dependency 'randomForest' is not available

 There is a binary version available but the source version is later:

   binary source needs_compilation

cem 1.1.17 1.1.20            FALSE

installing the source package 'cem'

trying URL 'http://lib.stat.cmu.edu/R/CRAN/src/contrib/cem_1.1.20.tar.gz'

Content type 'application/x-gzip' length 2153944 bytes (2.1 MB)

downloaded 2.1 MB

The downloaded source packages are in

'C:\Users\Shuja\AppData\Local\Temp\spss16696\RtmpKKeSZV\downloaded_packages'

Warning messages:

1: running command '"C:/Program Files/R/R-3.2.0/bin/x64/R" CMD INSTALL -l "C:\ProgramData\IBM\SPSS\Statistics\24\extensions" C:\Users\Shuja\AppData\Local\Temp\spss16696\RtmpKKeSZV/downloaded_packages/cem_1.1.20.tar.gz' had status 1

2: In install.packages("cem") :

 installation of package 'cem' had non-zero exit status

When I enter the begin command in new syntax - it says "there is no package called "cem"

Looks like you got cem, so now do the same thing with randomForest

But when I enter the begin command in new syntax - it says "there is no package called "cem"

And what command should I put for forest plot ?

Thanks a lot for your help Jon

You need to change the insert.package call to

insert.package('randomForest')