Hi I have some problem in reading HDF files which are given in http://oceancolor.gsfc.nasa.gov/cgi/level3.pl. These files are SeaWiFS and Aqua MODIS data on aerosol optical depth and angstrom coefficients. I have Windows version GrADS (1.8). Plz suggest me how to plot the data. With best regards Praveen -- Open WebMail Project (http://openwebmail.org)