Hello R-World, i am trying to calculate data for a DEM (Digital Elavation Model) which i also want to plot in R. i have the coordinates for the lower left corner which look something like this:
x<-42,2 y<-50,5 besides i have the cellsize of the grid, which is: z<-1,1 what i do is to calculate the corrdinates of the cells to the right and top, what i can do by specifying the number of rows and columns. these are j<-1:805 (columns) i<-1:616 (rows) well, to calculate them seperatly is easy: r<-x+(i-1)*z h<-y+(j-1)*z but i can't get it straight how to create a data frame with two rows, one for the x- the other for the y-coordinate. The problem is, that lots of values have to be repeated as every first row x-coordinate has the same y-coordinate and so on. finally it should look like this: x y 42,2 50,5 43,3 50,5 44,4 50,5 45,5 50,5 . . . . 42,2 51,5 43,3 51,5 44,3 51,5 any suggestion? thanks in advance, Lars Claussen ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
