Das2 servers typically provide data relavent to space plasma and magnetospheric physics research. To retrieve data, an HTTP GET request is posted to a das2 server by a client program and a self-describing stream of data values covering the requested time range, at the requested time resolution, is provided in the response body. This software provides a client library for das2 servers written in pure IDL. To find out more about das2 visit https://das2.org.
das2pro is an IDL package and may be installed using the IPM command. The IPM command only installs github.com releases (does not use clone). If you are using IDL 8.7.1 or higher, das2pro can be downloaded and installed by issuing the single IDL command:
IDL> ipm, /install, 'https://github.com/das-developers/das2pro'
After installation it's best to test the package by generating one or more of the example plots. This can be done running the included example procedures as follows:
IDL> ex01_cassini_rpws_wfrm
IDL> ex03_rbsp_ephem_loc
IDL> ex05_juno_waves_survey
Each example generates a PNG image in the current directory. Use your favorite image viewer to inspect the results. Other examples may be found in within your local IDL package directory:
$HOME/.idl/idl/packages/das2pro/examples
To update das2pro to the latest version run the IPM command:
IDL> ipm, /update, 'das2pro'
and to remove das2pro from your packages directory issue:
IDL> IPM, /remove, 'das2pro'
If you are not running IDL 8.7.1 or higher, but are using at least IDL 8.6, das2pro will still work. You can download this package and run the included examples directly from your git working copy area. To do so issue:
$ git clone https://github.com/das-developers/das2pro.git
$ cd das2pro
$ env IDL_PATH="<IDL_DEFAULT>:$(pwd)/src:$(pwd)/examples" idl87
IDL> das2pro_ut ;running unit tests
IDL> ex02_mex_marsis_ais ;for example
Here '$' indicates a shell command, and 'IDL>' indicates an IDL command.