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Dear all, This is my first post here, so I thank you in advance for your help. My goal is to calculate the cost of traveling (friction) between two geographical points, given underlying "friction" rasters. Suppose for example that my...
Dear all, This probably stems from my lack of understanding of the model, but I do not understand the variance of the random effect reported in coxme. Consider the following toy example: #------------------------------- BEGINNING OF CODE ------------------------------------------------ library(survival) library(coxme) #--- Generate...
Great, thank you very much for your solution, Jacob. While I was waiting, I tried fiddling around with the following, but nothing really good came out of it. Your solution works well. #failed solution: tr.max <- tr.roads tr.alt...
Thank you very much for taking the time to answer. This pointed me in the right direction. For those interested, I found a useful explanation of the derivation of the estimated variance of the random effect in Hosmer & Lemeshow's...
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