Does DeducerSpatial support use of maptools ::sunriset to generate a
data set of these times based on input of X-Y locations?
What I will need to create is the "reciprocal" of day length to derive
the length of nights to standardize a DF data set for each sampling
location with nocturnal activity times of bats.
Bruce
--
Bruce W. Miller, Ph.D.
Conservation Ecologist
Neotropical Bat Projects
office details
11384 Alpine Road
Stanwood, Mi. 49346
Phone
(231) 679-6059