Dear Ferreters,I have a .jnl file which takes two arguments (lon and lat). I have my lat and lon variables incremented in a loop inside python and in that loop I am using the command pyferret.run('go script_name.jnl lon lat'). However, instead of passing the value stored in lon and lat, python is just passing the names and thereby causing the error "LON and LAT unknown data" to pop out. What should I do to pass the value stored in lat and lon to pyferret.run()?---Lijo Abraham JosephM.Sc Ocean and Atmospheric sciencesBatch 2015-17University of Hyderabad