Revision as of 14:40, 27 May 2016

SPEDAS provides command line and GUI access to the MMS FPI data.

Prior to using these data, please read the FPI Release Notes:

FPI Moments

For more complete examples, see the FPI crib sheets located in the /mms/examples/ folder.

To load and plot the MMS1 FPI electron moments data on March 7, 2016:

MMS> mms_load_fpi, datatype='des-moms', trange=['2016-03-07', '2016-03-08'], probe=1

MMS> tplot, 'mms1_des_numberdensity_dbcs_fast'

MMS> tplot, ['mms1_des_energyspectr_omni_avg', 'mms1_des_pitchangdist_avg']

To load and plot the ion density, along with the omni-directional spectra on March 7, 2016:

MMS> mms_load_fpi, datatype='dis-moms', trange=['2016-03-07', '2016-03-08'], probe=1

MMS> tplot, ['mms1_dis_numberdensity_dbcs_fast', 'mms1_dis_energyspectr_omni_avg']

SPEDAS can also be used to load and generate spectra from the FPI distribution functions.

To load the electron data:

MMS> mms_load_fpi, probe=1, trange=['2015-10-16/13:02:30', '2015-10-16/13:07:30'], data_rate='brst', datatype='des-dist'

Generate the energy spectra and pitch angle distributions:

MMS> mms_part_products, 'mms1_des_dist_brst', trange=['2015-10-16/13:02:30', '2015-10-16/13:07:30'], outputs=['energy','pa']

@@ Line 39: / Line 39: @@
 </gallery>
+= FPI Distributions =
+SPEDAS can also be used to load and generate spectra from the FPI distribution functions.
+== Examples ==
+=== Electron Distribution Data ===
 To load the electron data:
@@ Line 45: / Line 51: @@
 </div>
-To generate the pitch angle distributions (PADs), we also need spacecraft position and magnetic field data covering the time range:
-<div style="border: 1px solid LightGray; background-color:#F9F9F9; padding: 0px 10px; margin-left: 5px; margin-right: 5px;">
-MMS> mms_load_state, probes=1, trange=['2015-10-16/13:01:30', '2015-10-16/13:08:30']
-MMS> mms_load_fgm, probe=1, trange=['2015-10-16/13:01:30', '2015-10-16/13:08:30']
-</div>
 Generate the energy spectra and pitch angle distributions:
 <div style="border: 1px solid LightGray; background-color:#F9F9F9; padding: 0px 10px; margin-left: 5px; margin-right: 5px;">
-MMS> mms_part_products, 'mms1_des_dist_brst', trange=['2015-10-16/13:02:30', '2015-10-16/13:07:30'], mag_name='mms1_fgm_b_dmpa_srvy_l2_bvec', pos_name='mms1_defeph_pos', outputs=['energy','pa']
+MMS> mms_part_products, 'mms1_des_dist_brst', trange=['2015-10-16/13:02:30', '2015-10-16/13:07:30'], outputs=['energy','pa']
 </div>
@@ Line 68: / Line 61: @@
 Mms_part_products_fpi_spec.png|MMS1 FPI electron spectra and PAD on October 16, 2015
 </gallery>
+=== Ion Distribution Data ===
 = FPI 2D Slices =