[R] ctree

[Steve_Friedman at nps.gov]

Hello,

This is a re-submittal of question I submitted last week, but haven't rec'd
any responses.

I need to extract the probabilities used to construct the barplots
displayed as part of the graph produced by plot("ctree").

For example,

library(party)

iris.ct <- ctree(Species ~ . , data = iris)
plot(iris.ct)

Instead of a simple example with only 4 terminal nodes, my analysis
produces 55 terminal nodes, so unless someone is really interested I'm only
using the iris data as an example.

This is the model I am sending to ctree. The graph produced is very
informative, but I need the information from the plot(Marshct)

Marshct <- ctree(Physiogomy ~ meanAnnualDepthAve + meanAnnualDepthWetAve +
medAnnualDepthAve + medianAnnualDepthWetAve + medianAnnualDepthDryAve +
continHydroWetAve + DCHperiodAverage + DCHydroDryAve +
threeDayWaterDepthMinAve + threeDayWaterDepthMaxAve + sevenDayDryFreqAve +
sevenDayWaterDepthMaxAve + sevenDayWaterDepthMinAve +
seventeenDayWaterDepMaxAve + seventeenDayWaterDepMinAve +
thirtyoneDayWaterDepthMaxAve + wetIntensityAve + BulkDensity + LOI + TP +
TN + TC + Total_Mg, data = Marsh)

plot(Marshct)


Working in Windows XP with R2.11.1 (2010-05-31)

Thanks
Steve

Steve Friedman Ph. D.
Spatial Statistical Analyst
Everglades and Dry Tortugas National Park
950 N Krome Ave (3rd Floor)
Homestead, Florida 33034

Steve_Friedman at nps.gov
Office (305) 224 - 4282
Fax     (305) 224 - 4147