Inverse Gaussian Distribution
On Jan 3, 2011, at 3:03 PM, Louisa wrote:
Dear, I want to fit an inverse gaussion distribution to a data set. The predictor variables are gender, area and agecategory. For each of these variables I've defined a baseline e.g. #agecat: baseline is 3 data<-transform(data, agecat=C(factor(agecat,ordered=TRUE), contr.treatment(n=6,base=3))) The variable 'area' goes from A to F (6 areas: How can i manipulate the data to set the baseline of area to C? R is producing errors when I'm trying to do so.
In all likelihood it's a factor. Try
area <- factor(area, levels=c("C", "A","B","D","E","F") )
If not, then you need to provide more information. Read the Posting
Guide.
I'll be very thankful for any help you can provide. Louisa -- View this message in context: http://r.789695.n4.nabble.com/Inverse-Gaussian-Distribution-tp3172533p3172533.html Sent from the R help mailing list archive at Nabble.com.
David Winsemius, MD West Hartford, CT