search for: interpolater

Dear R-Users, I am looking for a help to deal with the following computational problem: I have a mapping f(x, y) -> (u, v) of [0,1]*[0,1] -> R^2. The mapping is given by tabulating f(x,y) on a uniform 2D grid and is assumed to be "interpolatable" in between the grid points (the number of points on each dimension is rather small, say 5). My ultimate goal is to numerically maximize

Hi all, I want to do this kind of function In R enviroment : For example : R <- 4 testString <- "I love $R" then search this testString, when find "$R",replace "$R" to R ,and because the value of R is 4 So the final string I want to get is "I love 4" How can I implement? Thanks advance Michael

Dear r-devel, I have implemented a function to create color palettes with improved contrast and logical order, compared with the built-in ones: source("arni.colors.R") # code is given below barplot(rep(1,100), col=arni.colors(100), space=0, border=0, axes=F) par(mfrow=c(2,1)) # rainbow() has too much green... barplot(rep(1,50), col=rev(rainbow(50,end=0.7)), space=0, border=0,

Hi, I am having trouble debugging this one. The code is attached below, but it seems to be a problem at the C-tk interface. If I run this 1 time there are no problems if I run it more than once I start to get warnings that increase in multiples of 11 everytime I run it. Here is a sample session > source("clrramp2.r") Loading required package: tcltk Loading Tcl/Tk interface ... done