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...se stopifnot(length(s) == 2L, all( vapply(s, is.integer, NA) )) instead of stopifnot(length(s) == 2L, all( vapply(unlist(s), is.integer, NA) ))? I appreciate your time and I'm looking forward to your response. Cheers, Man Chun John Ma, PhD Postdoctoral Fellow Unit 0903 Dept Lymphoma & Myeloma Research 1515 Holcombe Blvd. Houston, TX 77030 MMa at mdanderson.org The information contained in this e-mail message may be ...{{dropped:14}}

Since I read the list in digest form (and was out ill yesterday) I'm late to the discussion. There are 3 steps for predicting survival, using a Cox model: 1. Fit the data fit <- coxph(Surv(time, status) ~ age + ph.ecog, data=lung) The biggest question to answer here is what covariates you wish to base the prediction on. There is the usual tradeoff between too few (leave out something

Hi useRs - I was wondering if anyone out there can tell me where to find R-code to do mixes of tables and graphics. I am thinking of something similar to this: http://yost.com/information-design/powerpoint-corrupts/ or like the excel routines people are demonstrating: http://infosthetics.com/archives/2006/08/excel_in_cell_graphing.html My aim is to provide small graphics to illustrate