This page was created by the IDL library routine `mk_html_help2`.

Last modified: Sun Oct 5 03:17:42 2025.

# Directory Listing of Routines

# external/das2dlm

- DAS2DLM_ADD_METADATA
- DAS2DLM_GET_DS_META
- DAS2DLM_GET_DS_VAR
- DAS2DLM_GET_DS_VAR_NAME
- DAS2DLM_MJ1958_TO_UNIXTIME
- DAS2DLM_T2000_TO_UNIXTIME
- DAS2DLM_TIME_TO_UNIXTIME
- DAS2DLM_US2000_TO_UNIXTIME
- DAS2DML_LOAD_VAP_EFW

# Routine Descriptions

## DAS2DLM_ADD_METADATA

[Next Routine] [List of Routines]

     PRO: das2dlm_add_metadata, ...

     Description:
        Adds following metadata from das2dlm outputs into a structure
        'name' - name of the variable
        'use' - how it should be used
        'units' - units
        'props' -  structure of das2dlm properties

     Keywords:
        DAS2: Structure where metadata will be added
        p: Physical dimension, das2c_pdims
        v: Variable, das2c_vars
        m: Properties, das2c_props
        add (optional): adds postfix to the metadata field (default: '')

     CREATED BY:
        Alexander Drozdov (adrozdov@ucla.edu)

     NOTE:
       This function is under active development. Its behavior can change in the future.

     $LastChangedBy: adrozdov $
     $Date: 2020-08-03 20:45:11 -0700 (Mon, 03 Aug 2020) $
     $Revision: 28983 $
     $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/external/das2dlm/das2dlm_add_metadata.pro $

(See external/das2dlm/das2dlm_add_metadata.pro)

## DAS2DLM_GET_DS_META

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

     PRO: das2dlm_get_ds_meta, ...

     Description:
        Extracts metadata from dataset (ds)

     Keywords:
        ds: Dataset returned by das2c_datasets(query)
        meta: structure of metadata
        title: Name that can be obtained from the dataset properies

     CREATED BY:
        Alexander Drozdov (adrozdov@ucla.edu)

     NOTE:
       This function is under active development. Its behavior can change in the future.

     $LastChangedBy: adrozdov $
     $Date: 2020-08-28 20:47:39 -0700 (Fri, 28 Aug 2020) $
     $Revision: 29092 $
     $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/external/das2dlm/das2dlm_get_ds_meta.pro $

(See external/das2dlm/das2dlm_get_ds_meta.pro)

## DAS2DLM_GET_DS_VAR

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

     PRO: das2dlm_get_ds_var, ...

     Description:
        Loads physical dimensions, variables, methadata and data from das2dlm dataset
        Works only with 1D variables

     Keywords:
        ds: Dataset returned by das2c_datasets(query)
        name: dimension name (e.g. 'time')
        role: variable role (e.g. 'center');
        p: Physical dimension, das2c_pdims
        v: Variable, das2c_vars
        m: Properties, das2c_props
        d: Data, das2c_data

     CREATED BY:
        Alexander Drozdov (adrozdov@ucla.edu)

     NOTE:
       This function is under active development. Its behavior can change in the future.

     $LastChangedBy: adrozdov $
     $Date: 2020-08-03 20:45:11 -0700 (Mon, 03 Aug 2020) $
     $Revision: 28983 $
     $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/external/das2dlm/das2dlm_get_ds_var.pro $

(See external/das2dlm/das2dlm_get_ds_var.pro)

## DAS2DLM_GET_DS_VAR_NAME

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

     PRO: das2dlm_get_ds_var_name, ...

     Description:
        Return the name of the data variable in the dataset.

     Keywords:
        ds: Dataset returned by das2c_datasets(query)
        vnames: list of names of the data variable
        exclude (optional): array of variables to exclude from the list

     CREATED BY:
        Alexander Drozdov (adrozdov@ucla.edu)

     NOTE:
       This function is under active development. Its behavior can change in the future.

     $LastChangedBy: adrozdov $
     $Date: 2021-01-25 20:24:16 -0800 (Mon, 25 Jan 2021) $
     $Revision: 29620 $
     $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/external/das2dlm/das2dlm_get_ds_var_name.pro $

(See external/das2dlm/das2dlm_get_ds_var_name.pro)

## DAS2DLM_MJ1958_TO_UNIXTIME

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

     FUNCTION: das2dlm_mj1958_to_unixtime, ...

     Description:
        Converts mj1958 time to unixtime
        mj1958 –  Days since midnight 1958-01-01, more accurately Julian day – 2436204.5

     INPUT:
        time - mj1958 time

     RETURN:
       unixtime - unixtime (SPEDAS time)

     CREATED BY:
        Alexander Drozdov (adrozdov@ucla.edu)

     $LastChangedBy: adrozdov $
     $Date: 2020-08-03 20:45:11 -0700 (Mon, 03 Aug 2020) $
     $Revision: 28983 $
     $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/external/das2dlm/das2dlm_mj1958_to_unixtime.pro $

(See external/das2dlm/das2dlm_mj1958_to_unixtime.pro)

## DAS2DLM_T2000_TO_UNIXTIME

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

     FUNCTION: das2dlm_t2000_to_unixtime, ...

     Description:
        Converts t2000 time to unixtime
        t2000 – Seconds since midnight January 1st 2000, ignoring leap seconds

     INPUT:
        time - t2000 time

     RETURN:
       unixtime - unixtime (SPEDAS time)

     CREATED BY:
        Alexander Drozdov (adrozdov@ucla.edu)

     $LastChangedBy: adrozdov $
     $Date: 2020-08-03 20:45:11 -0700 (Mon, 03 Aug 2020) $
     $Revision: 28983 $
     $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/external/das2dlm/das2dlm_t2000_to_unixtime.pro $

(See external/das2dlm/das2dlm_t2000_to_unixtime.pro)

## DAS2DLM_TIME_TO_UNIXTIME

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

     FUNCTION: das2dlm_time_to_unixtime, ...

     Description:
        Converts time from das2dlm to unixtime

     INPUT:
        time - vector of time data
        units - string of das2dlm time, e.g. 'us2000'

     RETURN:
       unixtime - unixtime (SPEDAS time)

     CREATED BY:
        Alexander Drozdov (adrozdov@ucla.edu)

     TODO:
        us1980 – Microseconds since midnight January 1st 1980, ignoring leap seconds
        t1970 – Seconds since midnight January 1st 1970, ignoring leap seconds. (unixtime?)
        mjd – Days since midnight November 17, 1858.
        tt2000 – nanoseconds since 01-Jan-2000 including leap seconds, may be transmitted as an 8-byte
        cdfEpoch – milliseconds since 01-Jan-0000

     $LastChangedBy: adrozdov $
     $Date: 2020-08-03 20:45:11 -0700 (Mon, 03 Aug 2020) $
     $Revision: 28983 $
     $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/external/das2dlm/das2dlm_time_to_unixtime.pro $

(See external/das2dlm/das2dlm_time_to_unixtime.pro)

## DAS2DLM_US2000_TO_UNIXTIME

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

     FUNCTION: das2dlm_us2000_to_unixtime, ...

     Description:
        Converts us2000 time to unixtime
        us2000 – Microseconds since midnight January 1st 2000, ignoring leap seconds

     INPUT:
        time - us2000 time

     RETURN:
       unixtime - unixtime (SPEDAS time)

     CREATED BY:
        Alexander Drozdov (adrozdov@ucla.edu)

     $LastChangedBy: adrozdov $
     $Date: 2020-08-03 20:45:11 -0700 (Mon, 03 Aug 2020) $
     $Revision: 28983 $
     $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/external/das2dlm/das2dlm_us2000_to_unixtime.pro $

(See external/das2dlm/das2dlm_us2000_to_unixtime.pro)

## DAS2DML_LOAD_VAP_EFW

[Previous Routine] [List of Routines]

     PRO: das2dlm_load_vap_efw,...

     Description:
       Read EFW ElectronPlasmaFrequency

     Parameters:
       probe: 'a' or 'b' spacesraft
       trange: If a time range is set, timespan is executed with it at the end of this program

     CREATED BY:
       Alexander Drozdov (adrozdov@ucla.edu)

     $LastChangedBy: adrozdov $
     $Date: 2020-08-03 20:45:11 -0700 (Mon, 03 Aug 2020) $
     $Revision: 28983 $
     $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/external/das2dlm/das2dml_load_vap_EFW.pro $

(See external/das2dlm/das2dml_load_vap_EFW.pro)