?by
by(df1, df1$appid, function(x) summary(lm(pm ~ fp, data=x)))
Peter Rooney wrote:
Hi,
Given a data frame:
df1: application id (appid), project id (pid), person months (pm), function points (fp)
How do I produce linear modelling results at the appid level. That is, I would like to find the coefficent and intercept for the formula "pm ~ fp" for each application.
-- Chuck Cleland, Ph.D. NDRI, Inc. 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 452-1424 (M, W, F) fax: (917) 438-0894
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