[R] Solving PDEs

Hi, Is there any method in R by which I can solve PDEs? Thank you, Amit [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-pr

[R] Linear Optimization

Hi, I am using constrOptim for a linear optimization problem. But it is giving an error that initial value is not feasible, even though the initial value provided is feasible. I am using the following code. --Code fr<-function(x){ x1=x[1] x2=x[2] x3=x[3] x4=x[4] x5=

Re: [R] Quadratic Optimization

Thanks for the suggestions. I have started using R just a few days back. So i thought I might be missing something and its better to clarify. I was actually looking for a direct command(like fmincon in Matlab or NMinimize in Mathematica) which can solve non linear problems straightaway (quadrati

[R] query on nlm() function

Does nlm() function(non linear optimization function) supports quadratic constraints? Thanks Amit [[alternative HTML version deleted]] __ R-help@stat.

[R] Quadratic Optimization

Hi, I need to solve an optimization problem in R having linear objective function and quadratic constraints(number of variables is around 80). What are the possible choices to do this in R. optim() function only allows box constrained problems. Is it possible in nlm()? Or please tell me if the