I found the solution:
http://stats.stackexchange.com/questions/12993/how-to-setup-and-interpret-anova-contrasts-with-the-car-package-in-r
Sorry for the trouble.
On Sun, Mar 24, 2013 at 8:58 PM, Erin Hodgess wrote:
> Dear R People:
>
> I have the following in a file:
>
> resp factA factB
> 39.5
Dear R People:
I have the following in a file:
resp factA factB
39.5 low B-
38.6 high B-
27.2 low B+
24.6 high B+
43.1 low B-
39.5 high B-
23.2 low B+
24.2 high B+
45.2 low B-
33.0 high B-
24.8 low B+
22.2 high B+
and I construct the data frame:
> collard.df <- read.table("collard.txt",header=T
(Ted Harding) wrote:
> Hi Folks,
> This should have been simple to answer,
> but despite much chasing I don't seem able
> to catch this particular mouse!
>
> Basically (somewhat simplified): I have a
> binary response variable Y (0/1) and a
> 2-level factor A (0/1).
>
> I want to assign a contrast
Hi Folks,
This should have been simple to answer,
but despite much chasing I don't seem able
to catch this particular mouse!
Basically (somewhat simplified): I have a
binary response variable Y (0/1) and a
2-level factor A (0/1).
I want to assign a contrast to A such that,
when I run
summary(glm
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