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Description |
IDL is a software for data
analysis, visualization and cross-platform application developments.
It integrates a powerful, array-oriented language with numerous mathematical
analysis and display technique, giving high flexibility. |
Version installed |
Ubuntu 22.04:
9.0 (installed in December 2023).
Installed IDL Libraries:
Fanning
Coyote library, updated in March 2021;
IDL
astro lib, updated in JMarch 2021;
Markwardt
IDL Library, updated in April 2019;
Motley
library, installed in Dec 2009.
Additional libraries (not installed by default) are available, for instance see the
JHU/APL/S1R
IDL Page.
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Usage |
At the command prompt, type:
idl to start idl in command line mode
idlde to start the IDL development interface (recommended)
idlhelp or idlman to start the GUI help window
By default, these commands launch IDL v9.0
If you have problems with colors and are working on a 24-bit display,
read the page: IDL FAQs.
You can also create your own IDL
startup file in order to execute IDL
commands automatically every time you start IDL.
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Upgrade Notes |
See the
What's New in IDL 8.9
for a list of new features and updates in IDL v9.0
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Manuals and
Documentation |
Use the online help, or start
idlhelp (which does not not pick up
any licence). You also can type widget_olh within idl.
From time to time, the idlhelp command doesn't open any window (for reasons we fail to understand).
If this happens to you, please start idlde and use the Help menu there.
Other sources of information are the
Harris
IDL website, the
IDL
User Forum,
and the D. Fanning
Consulting Page which contains many other interesting links.
The Links
to other Astronomy and IDL related sites provides lists of IDL-related libraries and sites.
See also the course given by Alexandre Vazdekis, First
Steps in IDL, or R. Kroll's course given quite a few years ago. |
SIE contact |
Nicola Caon
–
– tel: 5383 – office: 1.124 |
Additional Info |
IDL borrow feature
You can borrow an IDL license for off-network use. If interested,
do get in touch with us.
Floating Licenses:
At present, there are 73 floating license "tokens" available
in the Unix network, including the CCA.
Please do not use more licenses than necessary, at times of high demand
(typically from 10am to 5pm on weekdays), and please exit
IDL promptly when you are finished.
Wavelet Toolkit
Several licences for the Wavelet Toolkit are also
available (since 16 March 2005).
Advanced Math and Stats Module
Since September 2009 two floating licenses for this module are available.
IDL hanging?
Some users have reported that IDL hangs sometimes when starting it from a remote machine,
accessed through a ssh connection.
The problem seems related to some sort of conflict with the graphics cards and driver in
the local and remote machine. We applied a fix consisting in disabling
the GL driver in a separate patched IDL installation, as this
fix may have a negative impact on the speed or quality of other
regular graphic routines (this workaround will cause IDL to
use software based object graphics rendering rather than OpenGL
hardware acceleration). To start the patched IDL version, type:
idl87p
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