[gradsusr] Scripting in GRaDS

[Jeff Lake]

Greetings ..
I have searched hi and low for someone else that has been in my situation.
I need to plot relative humidity, wind chill and heat index..
I have the needed perimeters from the GRIB data (Temp, Dewpt, & Wind speed)
now if this php, I could do it all day ...
I just can't seem to get a handle on the scripting language ..

anybody want to lend a hand converting the following??

rh = pow(10, (1779.75 * (dew_c - temp_c) / ((237.3 + dew_c) * (237.3 + 
temp_c)) + 2));

-- 
-Jeff Lake
MichiganWxSystem.com
WeatherMichigan.net
TheWeatherCenter.net
GRLevelXStuff.com