I should have added I am using R Studio, running R 2.14.1  64 bit  on Win7  with all packages of Bioconductor up to date.

Whether you think you can or think you can't - Your're right...
Henry Ford

Cristina Paul

Citrus Quarantine Unit
USDA-ARS-BA-PSI-MPPL
Mailling address:
Bldg 004 Rm 118
Beltsville MD 20705
office: 301-504-7657
FAX: 301-504-5449
Cell: 240-286-6709

Physical Address:
Range 1 head house #6





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