search for: dkstevens

I'm searching for answers to four questions (I've been searching the net for hours...) In Windows XP, is it possible to call R functions from a c program? (I've found examples for Linux/Unix but not Windows) If so, is there a simple example to get started using gcc with R-2.10.0? If so, is it possible to write a simple interface using a c dll to call R functions from a Visual

I'm observing odd behavior of the rep(...) procedure when using variables as parameters in a loop. Here's a simple loop on a vector 'branches' that is c(5,6,5,5,5). The statement in question is print(c(ni,rep(i,times=ni))) that works properly first time through the loop but the second time, when branches[2] = 6, only prints 5 values of i. Any ideas, anyone? iInd = 1

In trying to create a plotmath expression for plot labeling, such as R = 6, beta = 15 where I want beta to be the Greek beta and, possibly, R in italics (like one would get in an explicit expression. The reason for this is that I want to write a string builder function that takes vectors of variable names and their values and return a plotmath expression for labeling a plot. One approach I

Group It's unlikely I'm trying this the best way, but I'm trying to create a data structure from elements like nNode = 2 nn = vector("list",nNode) nn[[1]] = list(Node = "1", Connect.up = c(NULL), Connect.down = c(2,3)) nn[[2]] = list(Node = "2", Connect.up = c(1), Connect.down = c(4,5)) .... #( and eventually many more nodes) NodeList =

I apologize if this has been asked before but I've look for a long time with no success. My problem is that I want to annotate a plot with an expression that combines parameter names with fitted values for from 1 to n parameters depending on the problem - something like R = 16.1, P[m] = 4.51, k[a] = 7.23, alpha[r] = .01 ... with the [] values as subscripts. I thought that because the number