[S] 2 questions

Falk Huettmann (k9wk@unb.ca)
Thu, 11 Jun 1998 22:43:28 +0000


Hello,

Thanks to everybody who replied so quick and helpful no my two
requests earlier (tree lables and clustering).

Here two more questions on SPLUS (4.1 Win95 Pentium):

I am running a logistic regression, bimodial (a column with the two
cases "present" "absent"), and I predict the response. The output
called "fit" then lies somewhere between 0 and 1. How can I know
or check that 1 stands for presence and 0 for absence ?

In the graph window, 2D scatter plot, I have a subset option. Neither
the documentation nor the help files show me how to use this feature?
Would you know a brief example how "to subset" or filter a
data.frame (for instance including only presence data in the graph)?

Thanks in advance and best regards

Falk

Falk Huettmann
University of New Brunswick (UNB)
ACWERN / Fac.Forestry
PO Box 44555
Fredericton,N.B.
E3B 6C2 CANADA
Tel. (+1) (506) 452 6033
Fax (+1) (506) 453 3538
Email k9wk@unb.ca
http://www.geocities.com/CollegePark/Quad/5377/index.html
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