PROCEDURE: load_wi_pm_3dp PURPOSE: loads WIND 3D Plasma Experiment key parameter data for "tplot". INPUTS: none, but will call "timespan" if time_range is not already set. KEYWORDS: DATA: Raw data can be returned through this named variable. NVDATA: Raw non-varying data can be returned through this variable. TIME_RANGE: 2 element vector specifying the time range. MASTERFILE: (string) full file name to the master file. RESOLUTION: number of seconds resolution to return. PREFIX: Prefix for TPLOT variables created. Default is 'wi_pm_' POLAR: Computes polar coordinates if set. VTHERMAL: If set, calculates and stores thermal velocity. SEE ALSO: "make_cdf_index","loadcdf","loadcdfstr","loadallcdf" CREATED BY: Davin Larson FILE: load_wi_pm_3dp.pro LAST MODIFICATION: 99/05/27