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I just upgraded to Ubuntu Quantal from Precise and RJava stopped working, log follows: 0}% /usr/bin/find $HOME/workspace/FinanceOCR/visualizations/ -name '*R' -print | /usr/bin/xargs -n 1 -i% /usr/bin/Rscript % $1 [~] Loading required package: RJDBC Loading required package: methods Loading required package: DBI Loading required package: rJava Error : .onLoad failed in loadNamespace() for 'rJava', details: call:...

Dear list users, I have a data frame as below specified. From the 1st of May to the 30th of September of several years (e.g. from 2004 to 2011) I have a frequency of accidents. I need the mean of accidents divided by weeks (i.e. the mean of accidents from the 1st to the 7th of May of all the years, from the 8th to the 14th of May, ..., from the 29th to the 31st of May, from the 1st to the 7th of