[R] R-help Digest, Vol 91, Issue 21

[Kurt_Helf at nps.gov]

All
     Is there a script in R equivalent to the "if then" transforms one can
perform in Systat?  For example, I want to create a "Treatment" column
coded either 1 or 2 for twelve field sites in a large data set.  Ideally,
I'd be able to tell R to code sites a-f as 1 and sites g-l as 2.
Cheers
Kurt

***************************************************************
Kurt Lewis Helf, Ph.D.
Ecologist
EEO Counselor
National Park Service
Cumberland Piedmont Network
P.O. Box 8
Mammoth Cave, KY 42259
Ph: 270-758-2163
Lab: 270-758-2151
Fax: 270-758-2609
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Science, in constantly seeking real explanations, reveals the true majesty
of our world in all its complexity.
-Richard Dawkins

The scientific tradition is distinguished from the pre-scientific tradition
in having two layers.  Like the latter it passes on its theories but it
also passes on a critical attitude towards them.  The theories are passed
on not as dogmas but rather with the challenge to discuss them and improve
upon them.
-Karl Popper

...consider yourself a guest in the home of other creatures as significant
as yourself.
-Wayside at Wilderness Threshold in McKittrick Canyon, Guadalupe Mountains
National Park, TX

Cumberland Piedmont Network (CUPN) Homepage:
http://tiny.cc/e7cdx

CUPN Forest Pest Monitoring Website:
http://bit.ly/9rhUZQ

CUPN Cave Cricket Monitoring Website:
http://tiny.cc/ntcql

CUPN Cave Aquatic Biota Monitoring Website:
http://tiny.cc/n2z1o