[R] randomSurvivalForest plotting

2009-01-26 Thread A Van Dyke
i would like to plot a subset of variables with the highest variable importance measures (say the top 20) instead of plotting all of the variables included in the analysis (~75). i tried arguments that work to restrict the number of variables displayed in the plot in randomForest as follows:

[R] bootstrap validation of LR error message

2009-01-16 Thread A Van Dyke
when i try to validate my logistic regression model: fit-glm(y~x,binomial,data=dataname,x=TRUE,y=TRUE) validate(fit,method=boot,B=150,...) i get the following error message: Error in UseMethod(validate) : no applicable method for validate any insight would be appreciated. many thanks! --

[R] error message when plotting survival curves

2008-10-20 Thread A Van Dyke
I am trying to plot survival curves using the following code as an example: rs1799964.coxph-(coxph(Surv(sassurvmonths,status)~age+stage+rs1799964_TNFA,method=efron)) plot(rs1799964.coxph,lyt=c(1,3),xlab=Survival in Months,ylab=Proportion Surviving) I am gettingthe following error message: