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Markwardt IDL Page
What's New
Programs
Curve Fitting
Fitting Tutorial
Introspection
Save Files
Array/Set
Printing
Graphics
Mathematics
Ephemeris/Timing
Input/Output
Miscellaneous
Full Listing
Documentation
Craig's techie blog.
Home Page of Craig Markwardt
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Markwardt IDL Library
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Here is a library of IDL software procedures that I am making
available to the general public. You are free to download and use them
as you wish, however please obtain permission before redistributing.
Major News
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2008 Jun 3
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NOTE: This website has been restored after a period of neglect.
Hackers destroyed the original computer hosting my site in mid-May
2008, and a backup was in place in the interim. The site should now be in
better working order. A bug fix for MPFIT is now available, which affected
how parameter LIMITS were handled (the function would crash).
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2008 Mar 29
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Small changes to MPFIT, GTISEG, MULTISORT and NORMPATH.
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This News page has less recent and lower priority news.
IDL Programs
You can choose selectively by category below, download a single
monolithic program archive, or browse the
full listing.
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Curve Fitting and Function
Minimization - Robust non-linear least squares curve fitting
(MPFIT), statistical tests, specialized peak fitting functions, and
non-linear optimization (TNMIN) |
Read and Write SAVE
Files - Library to read, write and interrogate IDL SAVE files
(CMSVLIB); read and translate compiled IDL procedures; documentation
of IDL SAVE file format.
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Graphics Programs -
Display an image using a PLOT-like interface;
display colorful bar charts;
plot three dimensional data as a cube;
plot fixed- or variable-width histograms
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Mathematics -
Adaptive numerical integration (Quadpack);
Chebyshev approximation and interpolation;
(Modified) Cholesky factorization of a symmetric matrix;
QR matrix decomposition;
Manipulate quaternions
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Printing Utilities -
One-click printing (Unix);
configure Postscript layout;
enhanced XWINDOW
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Introspection -
Generate a type description or "help" description of an IDL value;
compute type information for tags in a structure;
unofficial documentation for ROUTINE_NAMES
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Ephemeris & Timing -
Interpolate the positions and motions of planets (JPL ephemerides);
read and interpolate geopotentials;
calculate relativistic clock corrections in the solar system;
compute relativistic velocity additions;
compute high precision earth orientation angles;
compute leap seconds.
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Array / Set Operations -
Hash tables;
Manipulate 1-D Intervals (GTIs);
compute the fast product of a large array;
efficiently insert / delete elements in an array;
perform set operations on numbers and strings;
generic replacement for IDL's REPLICATE;
apply generic function to array
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Input / Output -
Capture a transcript of console output;
read ASCII tables quickly;
construct path names;
read and seek on pipes/URLs like normal files (Unix)
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Miscellaneous -
Unique identifiers;
Command line debugging made easy;
compute and convert between time representations;
maintain a one-line status line (Unix/ANSI);
improved image interpolation
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Full Archive
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Copyright © 1997-2004 Craig B. Markwardt
Last Modified on 2008-06-03 01:55:27 by Craig Markwardt
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