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Directory Listing of Routines

Routine Descriptions

COTRANS

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procedure: cotrans, name_in, name_out [, time]

Purpose: geophysical coordinate transformations

         GEI<-->GSE;
         GSE<-->GSM;
         GSM<-->SM;
         GEI<-->GEO;
         interpolates the spinphase, right ascension, declination
         updates coord_sys atribute of output tplot variable.

inputs

   name_in 	... data in the input coordinate system (t-plot variable name, 
                                                        or array)
   name_out    ... variable name for output            (t-plot variable name,
                                                        or array)
   time        ... optional input: array of times for input values, if provided
                   then the first parameter is an array, and the second
                   parameter is a named variable to contain the output array.


keywords:
   TRANSFORMATIONS


	/GEI2GSE
	/GSE2GEI

	/GSE2GSM
	/GSM2GSE

 /GSM2SM
 /SM2GSM

 /GEI2GEO
 /GEO2GEI

 /IGNORE_DLIMITS: set so it won't require the coordinate
system of the input tplot variable to match the coordinate
system from which the data is being converted

Examples:


      cotrans,'tha_fgl_gse','tha_fgl_gsm',/GSE2GSM
      cotrans,'tha_fgl_gsm','tha_fgl_gse',/GSM2GSE

      cotrans,'tha_fgl_gse','tha_fgl_gei',/GSE2GEI
      cotrans,'tha_fgl_gei','tha_fgl_gse',/GEI2GSE

      cotrans,'tha_fgl_gsm','tha_fgl_sm',/GSM2SM
      cotrans,'tha_fgl_sm','tha_fgl_gsm',/SM2GSM

Notes: under construction!!

Written by: Hannes Schwarzl & Patrick Cruce(pcruce@igpp.ucla.edu)

 $LastChangedBy: pcruce $
 $LastChangedDate: 2008-01-29 11:06:43 -0800 (Tue, 29 Jan 2008) $
 $LastChangedRevision: 2324 $
 $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/ssl_general/tags/tdas_5_21/cotrans/cotrans.pro $

(See ssl_general/cotrans/cotrans.pro)

COTRANS_GET_COORD

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	Function: COTRANS_GET_COORD

	Purpose:  determine the coordinate system of data by 
                 examining the contents of it's DLIMIT structure.

	Calling Sequence:
		tplot_var = 'tha_eff'
		get_data, tplot_var, data=d, limit=l, dlimit=dl
		coord = cotrans_get_coord( dl) 
               ; -- or --
               coord = cotrans_get_coord('tha_eff')

	Arguements:
		DL, Anonymous STRUCT, or tplot variable name.

	Notes:
		None.

 $LastChangedBy: kenb-mac $
 $LastChangedDate: 2007-05-01 15:11:55 -0700 (Tue, 01 May 2007) $
 $LastChangedRevision: 622 $
 $URL $

(See ssl_general/cotrans/cotrans_get_coord.pro)

COTRANS_LIB[10]

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procedure: subGEI2GEO

Purpose: transforms data from GEI to GEO

INPUTS: TIMES as time_struct, DATA_in as nx3 array


keywords:

Example:


Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[11]

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procedure: subGEO2GEI

Purpose: transforms data from GEO to GEI

INPUTS: TIMES as time_struct, DATA_in as nx3 array


keywords:

Example:


Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[12]

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procedure: csundir_vect

Purpose: calculates the direction of the sun
         (vectorized version of csundir from ROCOTLIB by
          Patrick Robert)

INPUTS: integer time


output :      gst      greenwich mean sideral time (radians)
              slong    longitude along ecliptic (radians)
              sra      right ascension (radians)
              sdec     declination of the sun (radians)
              obliq    inclination of Earth's axis (radians)



Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[13]

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procedure: tgeigse_vect

Purpose: GEI to GSE transformation
         (vectorized version of tgeigse from ROCOTLIB by
          Patrick Robert)



Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[14]

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procedure: tgsegei_vect

Purpose: GSE to GEI transformation
         (vectorized version of tgsegei from ROCOTLIB by
          Patrick Robert)



Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[15]

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: tgsegsm_vect

Purpose: GSE to GSM transformation
         (vectorized version of tgsegsm from ROCOTLIB by
          Patrick Robert)



Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[16]

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procedure: tgsmgse_vect

Purpose: GSM to GSE transformation
         (vectorized version of tgsmgse from ROCOTLIB by
          Patrick Robert)



Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[17]

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procedure: tgsmsm_vect

Purpose: GSM to SM transformation
         (vectorized version of tgsmsma from ROCOTLIB by
          Patrick Robert)



Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[18]

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: tsmgsm_vect

Purpose: SM to GSM transformation
         (vectorized version of tsmagsm from ROCOTLIB by
          Patrick Robert)



Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[19]

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: cdipdir_vect

Purpose: calls cdipdir from ROCOTLIB in a vectorized environment



Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $

 faster algorithm (for loop across all points avoided) Hannes 05/25/2007

 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[1]

 [Previous Routine] [Next Routine] [List of Routines] 
pro sub_GSE2GSM

Purpose: transforms data from GSE to GSM


keywords:
   /GSM2GSE : inverse transformation
Example:
      sub_GSE2GSM,tha_fglc_gse,tha_fglc_gsm

      sub_GSE2GSM,tha_fglc_gsm,tha_fglc_gse,/GSM2GSE


Notes: under construction!!  will run faster in the near future!!

Written by Hannes Schwarzl
 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/ssl_general/tags/tdas_5_21/cotrans/cotrans_lib.pro $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[20]

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: cdipdir

Purpose: cdipdir from ROCOTLIB. direction of Earth's magnetic axis in GEO



Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[2]

 [Previous Routine] [Next Routine] [List of Routines] 
pro: sub_GEI2GSE

Purpose: transforms THEMIS fluxgate magnetometer data from GEI to GSE


keywords:
   /GSE2GEI : inverse transformation
Example:
      sub_GEI2GSE,tha_fglc_gei,tha_fglc_gse

      sub_GEI2GSE,tha_fglc_gse,tha_fglc_gei,/GSE2GEI


Notes: under construction!!  will run faster in the near future!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[2]

 [Previous Routine] [Next Routine] [List of Routines] 
pro sub_GSM2SM

Purpose: transforms data from GSM to SM


keywords:
   /SM2GSM : inverse transformation
Example:
      sub_GSM2SM,tha_fglc_gsm,tha_fglc_sm

      sub_GSM2SM,tha_fglc_sm,tha_fglc_gsm,/SM2GSM


Notes: under construction!!  will run faster in the near future!!

Written by Hannes Schwarzl
 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/ssl_general/tags/tdas_5_21/cotrans/cotrans_lib.pro $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[3]

 [Previous Routine] [Next Routine] [List of Routines] 
pro sub_GEI2GEO

Purpose: transforms data from GEI to GEO


keywords:
   /GEO2GEI : inverse transformation
Example:
      sub_GEI2GEO,tha_fglc_gei,tha_fglc_geo

      sub_GEI2GEO,tha_fglc_geo,tha_fglc_gei,/GEO2GEI


Notes:

Written by Patrick Cruce(pcruce@igpp.ucla.edu)
 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/ssl_general/tags/tdas_5_21/cotrans/cotrans_lib.pro $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[4]

 [Previous Routine] [Next Routine] [List of Routines] 
proceddure: subGEI2GSE

Purpose: transforms data from GEI to GSE

INPUTS: TIMES as time_struct, DATA_in as nx3 array


keywords:

Example:


Notes: under construction!!  will run faster in the near future!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[5]

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: subGSE2GEI

Purpose: transforms data from GSE to GEI

INPUTS: TIMES as time_struct, DATA_in as nx3 array


keywords:

Example:


Notes: under construction!!  will run faster in the near future!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[6]

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: subGSE2GSM

Purpose: transforms data from GSE to GSM

INPUTS: TIMES as time_struct, DATA_in as nx3 array


keywords:

Example:


Notes: under construction!!  will run faster in the near future!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[7]

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: subGSM2GSE

Purpose: transforms data from GSM to GSE

INPUTS: TIMES as time_struct, DATA_in as nx3 array


keywords:

Example:


Notes: under construction!!  will run faster in the near future!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[8]

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: subGSM2SM

Purpose: transforms data from GSM to SM

INPUTS: TIMES as time_struct, DATA_in as nx3 array


keywords:

Example:


Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_LIB[9]

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: subSM2GSM

Purpose: transforms data from SM to GSM

INPUTS: TIMES as time_struct, DATA_in as nx3 array


keywords:

Example:


Notes: under construction!!

 $LastChangedBy: pcruce $
 $LastChangedDate: 2007-11-19 13:25:56 -0800 (Mon, 19 Nov 2007) $
 $LastChangedRevision: 2056 $
 $URL $

(See ssl_general/cotrans/cotrans_lib.pro)

COTRANS_SET_COORD

 [Previous Routine] [Next Routine] [List of Routines] 
	Function: COTRANS_SET_COORD

	Purpose:  set the coordinate system of data by 
                 setting the data_att structure of its DLIMIT structure.

	Calling Sequence:
		tplot_var = 'tha_eff'
		get_data, tplot_var, data=d, limit=l, dlimit=dl
		coord = cotrans_set_coord, dl, 'gei'
		store_data, tplot_var, data=d, limit=l, dlimit=dl

	Arguements:
		DL, Anonymous STRUCT.

	Notes:
		None.

 $LastChangedBy: kenb-mac $
 $LastChangedDate: 2007-08-01 22:08:30 -0700 (Wed, 01 Aug 2007) $
 $LastChangedRevision: 1318 $
 $URL $

(See ssl_general/cotrans/cotrans_set_coord.pro)

DSL2GSE

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: dsl2gse

Purpose: THEMIS coordinate transformations

         DSL<-->GSE;

         interpolates, right ascension, declination
         updates coord_sys atribute of output tplot variable.

inputs

	name_thx_xxx_in 	... data in the input coordinate system (t-plot variable name)
   name_thx_spinras     ... right ascension (t-plot variable name)
   name_thx_spindec     ... declination (t-plot variable name)
   name_thx_xxx_out     ... name for output (t-plot variable name)

keywords:
   TRANSFORMATIONS


   /GSE2DSL inverse transformation

   /IGNORE_DLIMITS if the specified from coord is different from the
coord system labeled in the dlimits structure of the tplot variable
setting this keyword prevents an error

Example:
      dsl2gse('tha_fgl_dsl','tha_spinras','tha_spindec','tha_fglc_gse')

        expects attitude in GEI (tha_spinras,tha_spindec)

      dsl2gse('tha_fglc_gse','tha_spinras','tha_spindec','tha_fgl_dsl',/GSE2DSL)

        expects attitude in GEI (tha_spinras,tha_spindec)

Notes: under construction!! will run faster in the near future!!

Written by Hannes Schwarzl
 $LastChangedBy: pcruce $
 $LastChangedDate: 2009-08-18 14:45:25 -0700 (Tue, 18 Aug 2009) $
 $LastChangedRevision: 6602 $
 $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/ssl_general/tags/tdas_5_21/cotrans/dsl2gse.pro $

(See ssl_general/cotrans/dsl2gse.pro)

GSE2SSE

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: gse2sse

Purpose: Coordinate transformation between GSE & SSE coordinates(and the inverse)

     SSE is defined as:
        X: Moon->Sun Line
        Y: Ecliptic North cross X
        Z: X cross Y
         
     GSE is defined as:
        X: Earth Sun Line(naturally in the ecliptic plane)
        Y: Z x X
        Z: Ecliptic North
inputs:

  name_in: 
    Name of input tplot variable to be transformed
  name_sun_pos:
    Name of the solar position tplot variable in GEI coordinates
  name_lun_pos:
    Name of the lunar position tplot variable in GEI coordinates
  name_out:
    Name that the rotated variable should take.
    
keywords:

   /SSE2GSE inverse transformation

   /IGNORE_DLIMITS: Dlimits normally used to determine if coordinate
   system is correct, to decide if position needs offset, or to 
   stop incorrect transforms.  This option will stop this behavior. 

Examples:
      gse2sse,'tha_state_pos','slp_sun_pos_gse','slp_lun_pos_gse','tha_state_pos_sse'
      gse2sse,'tha_state_pos_sse','slp_sun_pos_gse','slp_lun_pos_gse','tha_state_pos_gse',/sse2gse,/ignore_dlimits

Notes:
   #1 SSE coordinate Z-axis is generally not exactly parallel to ecliptic north,
      as the moon will not always be in the ecliptic plane, and thus the moon->sun line
      will not always lie in the ecliptic plane.
   #2 If dlimit-labeled position passed in without /ignore_dlimits,
      input will be offset to account for relative position of frames of reference.
   #3 If dlimit-labeled velocity passed in without /ignore_dlimits,
      input will be offset to account for relative motion of frames of reference
   #4 If dlimit-labeled acceleration passed in without /ignore_dlimits,
      warning will be raise, but offset will not be applied automatically
   #5 Uses tvector_rotate, and sse_matrix_make to perform the rotation.
      tvector_rotate will also interpolate the rotation matrix onto the time-grid of the input.
      Interpolation done using quaterions and the spherical linear interpolation algorithm (SLERP)
      
Written by Jenni Kissinger and Patrick Cruce

 $LastChangedBy: pcruce $
 $LastChangedDate: 2009-08-18 14:45:25 -0700 (Tue, 18 Aug 2009) $
 $LastChangedRevision: 6602 $
 $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/ssl_general/tags/tdas_5_21/cotrans/gse2sse.pro $

(See ssl_general/cotrans/gse2sse.pro)

HDZ2GEO

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: hdz2geo

Purpose: Coordinate transformation between HDZ coordinates & GEO coordinates

     HDZ is defined as:

       H = horizontal field strength, in the plane formed by Z and GEO graphic north
       D = field strength in the Z x X direction in nT
       Z = downward field strength  
       
     H should be a projection onto a basis vector pointing north from station in nT
     D should be a projection onto a basis vector perpendicular to H in the horizontal plane.
         
     Total field strength should be sqrt(H^2+D^2+Z^2) not sqrt(H^2+Z^2)
     D must be in nT not degrees
    
     GEO is defined as:
         X = Vector parallel to vector pointing outward at the intersection of the equatorial plane and the 0 degree longitudinal meridean(Greenwich Meridean)
         Y = Z x X
         Z = Vector parallel to orbital Axis of Earth Pointing northward.

inputs:

  data_in: 
    Name of input tplot variable to be transformed, or Nx3 array of data for transformation. If no tplot variable is specific latitude and longitude must be set.
  data_out:
    Name of tplot variable in which to store output.  If this is a named variable and not a string, output data will instead be returned in variable.
  latitude: latitude of the HDZ station, must be set if data_in is not tplot variable, or latitude and longitude not stored in dlimit.data_att or dlimit.cdf.vatt 
  longitude: longitude of the HDZ station, must be set if data_in is not tplot variable, or latitude and longitude not stored in dlimit.data_att or dlimit.cdf.vatt
  geo2hdz: If set, performs inverse transformation from GEO to HDZ
  error: Set to named variable that will return 1 if an error occurs and 0 otherwise
  rotation_matrix:  Returns the rotation matrix that will be used to transform
  
keywords:

   /SSE2GSE inverse transformation

   /IGNORE_DLIMITS: Dlimits normally used to determine if coordinate
   system is correct, to decide if position needs offset, or to 
   stop incorrect transforms.  This option will stop this behavior. 

Examples:
  hdz2geo,hdz_arr_in,geo_arr_out,latitude=60.4,longitude=173.6
  hdz2geo,'in_tvar_name_hdz','out_tvar_name_geo'
  hdz2geo,'in_tvar_name_geo','out_tvar_name_hdz',/geo2hdz  ;inverse transformation

Notes:
   #1 HDZ coordinates only make sense relative to a location, assumedly a ground station(gmag)
   
   #2 Specific latitude and longitude keywords must be set if: 
    (1) data_in is not a tplot variable name 
    -OR-
    (2) tplot variable named by data_in does not specific site_latitude & site_longitude in dlimits 
   
   #3 If latitude or longitude keywords are set, these values will be used, not dlimit values. 
   
   #4 This transformation is a first order approximation.  It treats the earth as if it is a true sphere, ignoring
   distortions due to the fact that the earth is actually an oblate spheroid.  
  
   
   Written by Patrick Cruce(pcruce@igpp.ucla.edu)

 $LastChangedBy: pcruce $
 $LastChangedDate: 2010-03-29 15:27:35 -0700 (Mon, 29 Mar 2010) $
 $LastChangedRevision: 7445 $
 $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/ssl_general/tags/tdas_5_21/cotrans/hdz2geo.pro $

(See ssl_general/cotrans/hdz2geo.pro)

SPG2SSL

 [Previous Routine] [Next Routine] [List of Routines] 
procedure: spg2ssl

Purpose: coordinate transformation

         SPG<-->SSL;


inputs

	name_thx_xxx_in 	... data in the input coordinate system (t-plot variable name)
   name_thx_xxx_out    ... name for output  (t-plot variable name)

keywords:
   TRANSFORMATIONS

   /SSL2SPG inverse transformation

   /IGNORE_DLIMITS if the specified from coord is different from the
coord system labeled in the dlimits structure of the tplot variable
setting this keyword prevents an error

Example:
      spg2ssl,'tha_fgl_spg','tha_fgl_ssl'
      spg2ssl,'tha_fgl_ssl','tha_fgl_spg',/SSL2SPG
Notes: under construction!!

Written by Hannes Schwarzl
 $LastChangedBy: kenb-mac $
 $LastChangedDate: 2007-05-05 10:29:05Z $
 $LastChangedRevision: 645 $
 $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/ssl_general/trunk/cotrans/ssl2dsl.pro $

(See ssl_general/cotrans/spg2ssl.pro)

SSL2DSL

 [Previous Routine] [List of Routines] 
procedure: ssl2dsl

Purpose: despins (spins) THEMIS  data

         SSL<-->DSL;

         interpolates the spinphase, spin period
         updates coord_sys atribute of output tplot variable.

inputs

	name_thx_xxx_in 	... data in the input coordinate system (t-plot variable name)

keywords:
   /NAME_INPUT : Always required; this argument is the name of a tplot
     variable to use as the input data.

   /NAME_OUTPUT: Always required; this argument is the name of a tplot
     variable to receive the output.

   TRANSFORMATIONS

   /DSL2SSL inverse transformation

   /IGNORE_DLIMITS if the specified from coord is different from the
coord system labeled in the dlimits structure of the tplot variable
setting this keyword prevents an error
 
  /INTERPOLATE_STATE : if specified, interpolate the spin phase
    from the 1-minute samples in the state CDF.  Otherwise,
    use the spinmodel routines by default.

  /NAME_THX_SPINPER : required if /INTERPOLATE_STATE is specified;
    this is the name of a tplot variable containing the 1-minute
    spinper samples from the state CDF.

  /NAME_THX_SPINPHASE : required if /INTERPOLATE_STATE is specified;
    this is the name of a tplot variable containing the 1-minute
    spinphase samples from the state CDF.
 
  /SPINMODEL_PTR : required if /INTERPOLATE_STATE is NOT specified;
    this argument is a pointer to the appropriate spin model data structure.

Example:
      ssl2dsl,name_input='tha_fgl_ssl',$
          name_output='tha_fgl_dsl',$
          /INTERPOLATE_STATE,$
          name_thx_spinper='tha_state_spinper',$
          name_thx_spinphase='tha_state_spinphase'

      ssl2dsl,name_input='tha_fgl_dsl',$
        /INTERPOLATE_STATE,$
        name_thx_spinper='tha_state_spinper',$
        name_thx_spinphase='tha_state_spinphase',$
        name_output='tha_fgl_ssl',$
        /DSL2SSL

      ssl2dsl,name_input='tha_fgl_dsl',$
         spinmodel_ptr=spinmodel_get_ptr('a'),$
         name_output='tha_fgl_ssl'

Notes: under construction!!

Written by Hannes Schwarzl
 $LastChangedBy: pcruce $
 $LastChangedDate: 2009-10-01 17:19:15 -0700 (Thu, 01 Oct 2009) $
 $LastChangedRevision: 6799 $
 $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/ssl_general/tags/tdas_5_21/cotrans/ssl2dsl.pro $

(See ssl_general/cotrans/ssl2dsl.pro)