[R] sp package coordinates and gridded problems with as.list()

Dear All I hope that someone can help. I am working with sp pakage and akima library("akima") library(sp) imagine lots of different dataframes, of row = 100 columns = 3 of x and y coordinates with z values I will call these data frames for the sake of this example akima akima<-as.list(1:100)

Re: [R] AKIMA: z values at a set coordinate

the x axis corresponds to row > number and the y axis to column number, with column 1 at the > bottom, i.e. a 90 degree counter-clockwise rotation of the > conventional printed layout of a matrix. > > [2] http://wiki.r-project.org/rwiki/doku.php?id=tips:spatial-data > > Rhelp wanted wrote:

[R] AKIMA: z values at a set coordinate

Dear all. I am using the akima function to produce 3d contour plots using interp based on irregular data. using the eg in the akima manual library("akima") data(akima) plot(y ~ x, data = akima, main = "akima example data") with(akima, text(x, y, formatC(z,dig=2), adj = -0.1)) ## linear interpola