One way to do it is to transform the matrix to a character matrix, replace the upper (or lower) triangle with spaces or tabs and write out using write.table. So that would look like: x <- matrix(rnor
Hi S-news, I am analyzing survival data with time varying covariates. I am using the coxph function with counting process format for the data. I have quit a lot of data, fitting the model is not a pr
My original question: I am analyzing survival data with time varying covariates. I am using the coxph function with counting process format for the data. I have quit a lot of data, fitting the model
It is still available. But since it makes use of numerical recipes code, it is only available to those who have a license of numerical recipes. So you must have either the book or a screen license. I