I've always used NCL's scripts for those plots since their have a much nicer GRIB and netCDF interface (and it's already been written for me!). http://www.ncl.ucar.edu/A...cations/taylor.shtml Would you be able to reverse engineer one of their scripts? Bill

Hi Patrick, Take a look at our Code Library contributions. You will find a contributions about the Taylor diagrams: --------------------------------------------------------------------------------------------------------------------------------------------- Taylor diagram Author : Igor Okladnikov oig@scert.ru Recently I ran into a necessity to plot Taylor diagrams. Unfortunately, I could not find any IDL routine, so I've created it by taking an NCL routine (http://www.ncl.ucar.edu/A.../taylor_diagram.ncl) and recoding it into IDL. The function requires fsc_color.pro function by David Fanning (you can google it) and returns IDLgrView object. So you can create a window (IDLgrWindow) to display it, or a buffer (IDLgrBuffer) to write it into a file. A simple example is in the description header of the function. Any comments and suggestions are welcomed! ------------------------------------------------------------------------------------------------------------------------------------------------ Check the ITT VIS website: http://www.ittvis.com/lan...ity/CodeLibrary.aspx Cheers, Fernando