Science Analysis Software for Space Plasmas
QSAS current version is 3.2.0
Both Windows and Macintosh versions are complete and self contained. It is no longer necessary to install QT5 or CDF.
This is a major release with time handling completely revised. Times are
now stored in TAI (with leap seconds) to nanosecond accuracy, and
conversion to ISO UTC time strings is performed on the fly as needed.
Times appear as UTC strings in all widgets and on plots, which can also handle leap seconds.
Changes in QSAS version 3.2.0
- Uses rigorous nanosec timeing in DvTime with leap seconds
- Improve is_regular and assign_regular to use new DvTime
- Smaller/faster Saveset from using nanosec from start time
- Relative paths for QSASscripts (or env variables)
- Fix Editors to not update time immediately
- Value return window tab and stand-alone now use same widget
- Record slider failed at > 1 million records on Mac (changed QT style)
- Minor plot enhancements (Colour and Legend)
is a software package which provides a flexible, extendable environment
for the selection, manipulation, and display of space physics data.
QSAS is written in C/C++ and is compiled using the gnu compiler set,
and makes use of several elements of third-party software, including Qt
(http://qt-project.org/downloads), cdf (http://cdf.gsfc.nasa.gov/) and PLplot (http://plplot.sourceforge.net/).
Currently available for Linux, Mac OSX and
Download page defaults to version appropriate for your platform. Select Browse All Files for other versions.
Earlier versions of QSAS and Cluster documentation are still available from the Cluster Science Centre web pages at Imperial College.
A sample session is
shipped with the distribution (QSAS32/tmp/SampleSession). This may be open from the QSAS 'File/Restore Session' menu.
- QSAS Help Pages (html) and other documentation are included in all
- DvObjectClass.html provides programmer's documentation on the DVOS kernel that can be used within plugins.
Plug-ins written by the QSAS team and many of the plugins provided by Stein Haaland are distributed with QSAS.
The DVOS library is also available as a self-contained download: select 'Browse All Files..." to DVOS directory for download.
The preferred wording for acknowledging use of QSAS
in publications is "Data analysis was done with the QSAS science analysis
system provided by the United Kingdom Cluster Science Centre (Imperial College
London) supported by The Science and
Technology Facilities Council (STFC)" or similar wording as appropriate.
Last up-dated 22 February 2017