[R] dmnorm not meant for 1024-dimensional data?

2007-04-25 Thread Daniel Elliott
Hello, I have some data generated by a simple mixture of Gaussians (more like K-means) and (as a test) am using dmnorm to calculate the probability of each data point coming from each Gaussian. However, I get only zero probabilities. This code works in low dimensions (tried 2 and 3 already). I

[R] function to normalize vectors?

2006-10-26 Thread Daniel Elliott
Hello all. I can find no function to compute norms (even the basic two-norm) of a vector in the online help (within the GUI) or the downloadable documentation. Thanks. - dan elliott [[alternative HTML version deleted]] __ R-help@stat.math.eth

Re: [R] Organisation of medium/large projects with multiple analyses

2006-10-28 Thread Daniel Elliott
Mark, It sounds like your data/experiment storage and organization needs are more complicated than mine, but I'll share my methodology... I'm still new to R, but have a fair experience with general programming. > All of my data is stored in postgresql, and I have a number of R files > that genera