GpmatrixfilePad
adds 1 row and 1 column (by duplicating the last row and last column) to a matrix file
GpsaveXYfile
saves an R matrix with coords as a XY data file
Gpxydata2matrix
converts a file with splot data to a gnuplot matrix file
GpXYcoordsConvertFun
reads a XY data file and changes the coords according to 2 functions
GpXYcoords2shpere
reads a XY data file and changes the coords to fit a sphere
GpmatrixfilePad(fileIN,fileOUT,overwrite=TRUE)
GpsaveXYfile(Rmatrix,xyfile)
Gpxydata2matrix(fileIN,fileOUT)
GpXYcoordsConvertFun(xyfile,newxyfile,fun1,fun2,swapXY=FALSE)
GpXYcoords2shpere(xyfile,newxyfile)
Gpmatrix2GimpPalette