[R-SIG-Mac] Can't save history using savehistory()

[Rob Goedman]

Ken,

History is saved at the end of your session. 

During a session, the new commands should show up at the bottom of the history pane.

Regards,
Rob


On Jan 12, 2011, at 1:41 PM, ken.williams at thomsonreuters.com wrote:

> savehistory() history doesn't seem to be doing anything on my platform.  Here's an example:
> 
> =======================================
> [R.app GUI 1.35 (5665) i386-apple-darwin9.8.0]
> 
> [History restored from /Users/u0048513/.Rapp.history]
>> tail(readLines(file("~/.Rapp.history")))
> [1] "?Matrix"                             "15*275/1024"                         "log10(2^32/4)"
> [4] "log2(10^6)"                          "library(ff)#"                        "ffload(\"ff/a\", rootpath=\"/tmp\")"
> 
>> 5+5
> [1] 10
> 
>> savehistory('~/.Rapp.history')
> 
>> tail(readLines(file("~/.Rapp.history")))
> [1] "?Matrix"                             "15*275/1024"                         "log10(2^32/4)"
> [4] "log2(10^6)"                          "library(ff)#"                        "ffload(\"ff/a\", rootpath=\"/tmp\")"
> 
>> sessionInfo()
> R version 2.12.1 (2010-12-16)
> Platform: i386-apple-darwin9.8.0/i386 (32-bit)
> 
> locale:
> [1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8
> 
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
> 
>> file.info('~/.Rapp.history')
>                 size isdir mode               mtime               ctime               atime uid gid    uname   grname
> ~/.Rapp.history 17357 FALSE  644 2011-01-12 15:36:20 2011-01-12 15:36:20 2011-01-12 15:36:25 502 502 u0048513 u0048513
> =======================================
> 
> As the last line shows, there shouldn't be a permissions problem.  One suspicious thing is that there are exactly 512 lines in the file – but in the R.app preference pane I have the max number of history items set to 1000, so perhaps that's a red herring.
> 
> Any thoughts?
> 
> --
> Ken Williams
> Senior Research Scientist
> 
> Thomson Reuters
> 
> Phone: 651-848-7712
> ken.williams at thomsonreuters.com
> http://thomsonreuters.com
> 
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