Displaying 3 results from an estimated 3 matches for "purbank".
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purban
2006 Oct 13
4
nontabular logistic regression
...tor
variables. My data, however are not. I'm not sure if that is the
source of the problems or not because the one example that includes a
continuous predictor looks to be coded exactly the same way. Looking at
the output, I get estimates for each case when I should get a single
estimate for purbank. Any suggestions?
Many thanks,
Jeff
THE DATA: (200 boxes total, used [0 if unoccupied, 1 occupied], the rest
are landscape variables).
box use purbank purban2 purban1 pgrassk pgrass2 pgrass1 grassdist grasspatchk
1 1 0.003813435 0.02684564 0.06896552 0.3282487 0.6845638 0.7586207 0 3.73
2 1...
2006 Oct 05
4
glm with nesting
...ain aspects of
the color of those feathers. Since I often have more than one sample
from a nest, I thought I should use a nested design.
Here's the code I've been using and I'd appreciate if someone could look
it over and see if it was correct.
bb.glm1 <- glm(rtot ~ box/(julian +purbank), data=bbmale,
family="gaussian", na.action=na.omit)
where rtot = total reflectance, box = nest box (i.e., birdhouse),
julian = day of the year and purbank = the proportion of urban cover in
a 1 km buffer around the nest box. I'm not interested in the box effect
and I've sepera...
2006 Oct 18
3
creating bins for a plot
...I ran a logistic regression and purban2 ends up
driving the probability of a box being occupied so it would be nice to
show this relationship. I'm also plotting the fitted values vs. purban2
but that's done. Any suggestions would be appreciated.
Many thanks,
Jeff
Data sample:
box use purbank purban2
1 1 0.003813435 0.02684564
2 1 0.04429451 0.1610738
3 1 0.04458785 0.06040268
4 1 0.06072162 0.2080537
5 0 0.6080962 0.6979866
6 1 0.6060428 0.6107383
7 1 0.3807568 0.4362416
8 0 0.3649164 0.3154362
9 0 0.3505427 0.2483221
10 0 0.3476093 0.1409396
11 0 0.3719566 0.3020134
12 1 0.09238011 0....