Dear Prof. Ripley

Many thanks. rtools 2.15 did the job.

One note if I may - In the rtools site one reads

rtools215.exe - r>2.14.1 to R 2.15.x No
rtoosl214.exe - r 2.13.x or R.2.14.x yes

which can mislead the reader.  2.14.x could mean 2.14.2 and "no" could mean
that rtools-2.15 is not read for prime time.

Ed

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