HESSI
Data Analysis Workshop at Goddard
February
7, 8, 9, 2001
Welcome to the Goddard HESSI Data Analysis Workshop.
Six Xterminals and four PC’s are available for use during the workshop for those who did not bring their own laptop. The Xterminals and PC’s are set up in the annex to Room 212 and in Room G10 in the basement. Laptops can be connected to the network following the instructions below in any of the three available rooms (212, 212 Annex, and G10).
X
Terminals
Connect to hesperia.gsfc.nasa.gov or eitv8.nascom.nasa.gov using account name guest.
Type sswidl to start IDL.
HEDAW-supplied
PC’s
Log in with user name guest (if login is required)
Click the SSWIDL icon on the desktop to start IDL (don’t use the Start button)
User-supplied
Laptops
You need to have IDL, SSW, and some test data files on your laptop to run the HESSI software. You only need to connect to the network to update your SSW software to the latest version, and to read your email.
If you don’t already have IDL installed on your laptop, you can use our temporary IDL 5.3 license (expires Feb. 28, 2001). Follow these instructions to install IDL. The installation will require ~170 MB.
- Get floppy with license information and IDL 5.3.1 CD from a HEDAW organizer.
- Insert IDL 5.3.1 CD and follow IDL installation instructions.
- Run IDL from the Start button.
- At the screen where you have the options: Demo, License, Exit, choose License.
- From the licensing screen choose Node-Locked (Software) option; a text box will appear.
- Open the license.dat file from floppy in an editor and cut and paste all of the text into the license window text box.
To install SSW, insert the HESSI Software CD and follow the instructions.
To access HESSI test data: The HESSI test data files were updated on February 1, 2001. If you don’t have a copy of the new data files on your laptop, you can follow the instructions at http://hessi.ssl.berkeley.edu/software/test_data_access.html. Or you can use the partial set of data files on the HESSI Software CD. Whether you copy the files to your hard disk or use them directly from the CD, you must set the environment variable HSI_DATA_ARCHIVE to point to their location (you can do this in your personal IDL startup file). On the CD the path is drive:\testdata\hessi. Example:
setenv HSI_DATA_ARCHIVE D:\testdata\hessi
Note:
The CD’s contain only a partial set of
data files ending at 9/1/00 09:40 while the flare catalog and full data set
cover through the end of 9/6/00.
You can not run the HESSI GUI without
some test data files.
If you want a small subset of the
data, the files you need are: hsi_filedb.txt, hsi_flist….fits, and any
hsi_yymmdd…fits that cover the time interval of interest.
To start IDL, click the SSWIDL icon on the desktop (don’t use the Start button).
To connect your laptop to the network:
Use dynamic addressing by clicking Control Panel - Network - Protocols - TCP/IP - ‘Obtain an IP address automatically’. All required addresses will be set automatically. Reboot.
Addresses available in G10 differ from 212, so you must reboot with dynamic addressing selected if you switch rooms.
Running
HESSI Software
Examples of HESSI commands:
(A complete explanation of using the imaging software is available at http://hessi.ssl.berkeley.edu/~cmj/hessi/doc.html.)
hessi_list - lists useful commands.
hessi - starts HESSI GUI
hessi_data, image=o retrieves object used in the GUI for use at command line
hessi_image, data, /plot simulates HESSI data, analyzes it, plots it, and returns image
hsi_flarecat, list, /struct - select flares and return a structure of parameters for flares
o = hsi_image() creates hessi image object
o-> plotman
o -> set, obs_time_int=[‘2000/8/31 11:40:50’, ‘2000/8/31 11:40:54’], xyoffset=[402,297]
o -> set, image_alg=’forward fit’