[R] Problems installing GammaTest

Hi, how to install the GammaTest package under WindowsVista? Only source code available, no binaries. Have tried R CMD INSTALL. The error message is: --- Making package GammaTest adding build stamp to DESCRIPTION making DLL . gcc.exe: installation problem

[R] Some simple questions about neural networks

Hi, I have some "simple" questions and annotations about neural networks: 1) Which R-package (or which software) would you use to train and validate a multilayer (2 hidden layers) feed forward neural network. I think "AMORE" is the only one that can do this task in R. 2) When using neur

[R] Rolling Window with 2 Input Vectors

Is there a function which does a rolling calcualtion with 2 input vectors. "rollapply" and "rollFun" seem to use only one input vector. I want to calcualte some prediction evaluation measures like MSE and MAE with a rolling window. My functions look like prediction.mse(pred,true) predicti