search for: 42131

...2 minor 5.1 year 2007 month 07 day 05 svn rev 42131 language R version.string R version 2.5.1 Patched (2007-07-05 r42131) -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Ge...

Hi, people. I am using R-2.5.0 now, when tried the function aggregate with sum, it showed an error as following: > a <- gl(3,10) > b <- rnorm(30) > aggregate(b,list(a),sum) # here is the error message, it complained that an error in FUN(X[[1L]], missing "INDEX", and no defaults value. but the tapply function will be okay. > tapply(b,list(a),sum) 1 2

...thers. Thanks in advance, G > version _ platform i686-pc-linux-gnu arch i686 os linux-gnu system i686, linux-gnu status Patched major 2 minor 5.1 year 2007 month 07 day 05 svn rev 42131 language R version.string R version 2.5.1 Patched (2007-07-05 r42131) -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gav...

I am not understanding something about generating PNG plots. I have tried several ways to obtain something other than a transparent background, but nothing I've done seems to change the background. For example: dev.print(png, width=800, height=600, bg='red', filename='example.png') which I thought would give a red background, simply gives the same transparent background I