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# Directory Listing of Routines

# projects/mms/common/gui/mms_ui_qcotrans

- MMS_UI_QCOTRANS
- MMS_UI_QCOTRANS_OPTIONS
- MMS_UI_REQ_MEC
  Determines availability of mec quaternion support data

# Routine Descriptions

## MMS_UI_QCOTRANS

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    Procedure:
      mms_ui_cotrans

    Purpose:
      Perform coordinate transforms for MMS dproc plugin.
      This is the primary routine which loads support data
      as requested and calls mms_qcotrans to perform the
      transformation.

    Calling Sequence:
      Called internally by SPEDAS

    API Input:
      active_data:  List of of tplot vars exported from the GUI for processing

      support_parameters:  Structure containing options from the setup routine (mms_ui_qcotrans_options)

      status_bar:  SPEDAS GUI status bar object
      history_window:  SPEDAS GUI history window object

      _extra keyword also required by API

    API Output:
      output_names:  List of tplot variables to be loaded into the GUI on completion.
      support_names:  List of support data to be left as tplot variables.
                      All other new tplot variables will be deleted on completion

    Notes:
      This routine executes the core of the operation and should be replayable
      without required user input.  To that end, any user querries should be
      placed in the setup routine (mms_ui_qcotrans_options).

    $LastChangedBy: pcruce $
    $LastChangedDate: 2016-12-07 11:04:32 -0800 (Wed, 07 Dec 2016) $
    $LastChangedRevision: 22444 $
    $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/mms/common/gui/mms_ui_qcotrans/mms_ui_qcotrans.pro $

(See projects/mms/common/gui/mms_ui_qcotrans/mms_ui_qcotrans.pro)

## MMS_UI_QCOTRANS_OPTIONS

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    Procedure:
      mms_ui_qcotrans_options

    Purpose:
      Gets and returns information required to perform MMS
      coordinate transforms in the SPEDAS GUI.
      This is the setup routine for mms_ui_qcotrans and the
      routine explicitly listed in the plugin text file.

    Calling Sequence:
      Called internally by SPEDAS

    API Input:
      gui_id:  Top level widget ID needed for building new windows

      status_bar:  SPEDAS GUI status bar object
      history_window:  SPEDAS GUI history window object

      loaded_data:  SPEDAS loaded data object.
                    Used to check necessity of loading MMS support data.

    API Output:
      plugin_structure:  Custom output structure used to pass information to
                         plugin's primary routine (mms_ui_qcotrans).

    Notes:
      This routine is for setup only.  Any action needed to replay the
      requested operation must occur in the primary routine (mms_ui_qcotrans)
      instead of here.  This includes:
        -adding to or editing the GUI's loaded data
        -loading support data or other necessary tplot variables

    $LastChangedBy: pcruce $
    $LastChangedDate: 2016-12-07 11:04:32 -0800 (Wed, 07 Dec 2016) $
    $LastChangedRevision: 22444 $
    $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/mms/common/gui/mms_ui_qcotrans/mms_ui_qcotrans_options.pro $

(See projects/mms/common/gui/mms_ui_qcotrans/mms_ui_qcotrans_options.pro)

## MMS_UI_REQ_MEC

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    NAME:
      mms_ui_req_mec

    PURPOSE:
      Determines availability of mec quaternion support data

    CALLING SEQUENCE:
      General:
        bool = mms_ui_req_spin(probe,inCoord,outCoord,trange [,loadedData])

      Example:
        if mms_ui_req_spin(probe,inCoord,outCoord,trange,loadedData) then begin
          mms_load_mec,probe=probe,trange=trange,varformat='*_quat_*'
        endif

    INPUT:
      inCoord: string storing the destination coordinate system (e.g. 'gse')
      outCoord: string storing the destination coordinate system (e.g. 'sse')
      probe: mms probe for check
      trange: two element arraw storing the time range
      loadedData: gui loadedData object reference

    OUTPUT:
      Returns boolean: 1 if required data is not present or does not cover
                       the time range, 0 otherwise.

    NOTES:
      This code assumes that only explicit transformations into the
      coordinates in question will require mec data.

    HISTORY:
      2015-04-24 - loaded data object now optional

    $LastChangedBy: pcruce $
    $LastChangedDate: 2016-12-07 11:04:32 -0800 (Wed, 07 Dec 2016) $
    $LastChangedRevision: 22444 $
    $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/mms/common/gui/mms_ui_qcotrans/mms_ui_req_mec.pro $

(See projects/mms/common/gui/mms_ui_qcotrans/mms_ui_req_mec.pro)