Dear R help list,
I am working on some data from a study on the habitat use and movement patterns
of fish using a marine protected area in Hawaii. We have a number of acoustic
receivers in a MPA, and any time a tagged fish passes within range it records
the date and time of detection. I am t
Dear List,
I am having problems running stepAIC with a negative binomial regression
model. I am working with data on manta ray abundance, using 20 predictor
variables. Predictors include variables for location (site), time (year, cos
and sin of calendar day, length of day, percent lunar illumi
Ben,
I tried playing with the "na.action" but that didn't seem to help. I didn't
know of the na.omit function. It made it much easier to get rid of all the
missing values in the file, and now the regression model is running.
I hadn't put interactions in the model yet since it wasn't even runn
Dear r list,
I am using glm.nb in the MASS package to fit negative binomial models to data
on manta ray abundance, and AICctab in the bbmle package to compare model IC.
However, I need to test for the goodness of fit of the full model, and have not
been able to find a Pearson's Chi Squared st
I need some help with sub-setting my data. I am trying to divide a data frame
into multiple data frames based on the year collected, and stored in a list
with each new data frame labeled with "year X" where X is the year the data was
collected. When I run my current code I get nine error messa
I have a few hundred .csv files in a folder on my hard drive, and I would like
to combine them all into one file. They are all the same data, but the program
that collected the data saved a file every 4 hours. I can combine the files
one at a time using rbind, but am having a problem automatin
I am trying to combine two data sets, one with daily values and one with weekly
values. SurveyData conatins environmental data collected on a daily basis.
sat.data contains satellite sea surface temperature that is an average of
satellite measurements over a six day period. I would like to co
Using:
R version 3.0.1 (2013-05-16) -- "Good Sport"
Platform: x86_64-w64-mingw32/x64 (64-bit)
OpenBUGS version 3.2.2 rev 1063
BRugs version 0.8-1
Hi there,
When using the modelCompile() function in BRugs package I get the following
error:
Error in handleRes(res) : NA
In addition: Warning mess
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