The software package is currently being dramatically improved and updated.
This is a (very) old version, potentially with bugs.

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List of routines
Instrutions for general code
Instructions for image simulation code

Help pages for shapelets IDL code + image simulation routines:

The first few lines of each .pro file contain a header with a description of the routine and general instructions for its use. These can be accessed from within IDL by typing "doc_library,"routine name"". I am also writing more extensive on-line documentation for many of the routines, although this task is currently proceeding slowly. If the information you want is not available, please ask me at . The help files will grow mainly through answers to such questions.

View for the subroutine.

Comprehensive list of routines:

simages: --- Image simulation with shapelets.
simages/shapelets_read_shapecat_hdf --- Reads in a shapelet catalogue containing all of the objects from both Hubble Deep Fields.
simages/simage_add_noise --- Adds a model of background and observational noise to a simulated image.
simages/simage_assemble_image --- Takes objects from a new shapelet catalogue and scatters them about an image, without noise.
simages/simage_generate_shapecat --- Repeatedly calls simage_generate_shapecat.pro to generate a shapelet catalogue for a simulated image.
simages/simage_make_analytic_object --- Given a desired ellipticity, magnitude and radial profile, generates a pixellated image of one simulated galaxy.
simages/simage_make_shapelet_object --- Given a set of shapelet coefficients, generates a pixellated image of one simulated galaxy.
simages/simage_resample_pdf --- Resamples a true population of galaxy shapes to generate a new object for a simulated image.
simages/simage_tests --- Performs some basic statistical tests of a simulated image.
decomp: --- Transform images into shapelet space and back.
decomp/focus: --- Automated n_max-beta finder, optimising chi^2 for a decomposition as in "Polar Shapelets".
decomp/polar: --- Conversion between Cartesian and polar shapelets.
alias: --- Wrapper routines used to maintain backwards compatability with old versions of the code.
io: --- Data I/O from disc, and conversion of structure types.
operations: --- Image manipulation and transformations in shapelet space.
pipeline: --- Object detection and decomposition within an entire astronomical image.
plotting: --- Various plotting tools.
properties: --- Shape analysis and galaxy morphology indices.
library: --- Standard IDL library routines, including some from the IDL Astronomy User's Library.

Return to the shapelets web page or the code download page.

Last modified on 02nd May 2008 by Richard Massey.

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