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theone
2006 Dec 10
0
Offset for Poisson GLM
...he desired offset,
rather than a column in my data frame, I'm not sure how to specify that as
an offset in the model:
glm(counts ~ as.factor(year) + as.factor(month) + as.factor(TOD) +
sightability, data=count.data, family=poisson, offset=log(???))
Any ideas will be much appreciated!
Thanks,
Theoni Photopoulos
--
Theoni Photopoulos, MRes Candidate
Gatty Marine Laboratory
School of Biology
University of St Andrews
St Andrews, Scotland
tp14@st-andrews.ac.uk
[[alternative HTML version deleted]]
2009 Nov 20
1
problem selecting 330 to 30 longitude
...e but I am trying to select a region from the
OIv2 SST dataset that crosses 0 longitude. The longitude variable is
arranged from 0 to 360 and I get an error message when trying to go from 330
to 30 for example. The data are from a NOAA netCDF file.
*temp = open.ncdf("c:/documents and settings/theoni/desktop/sstoi_v2.nc")
print(temp)
y1 = get.var.ncdf( temp, "latitude")
x1 = get.var.ncdf( temp, "longitude")
t1 = get.var.ncdf( temp, "time")
z1 = get.var.ncdf( temp, "sst")
sst = get.var.ncdf( temp, "sst", start=c(330,136,313), count=c(56,44,1...