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Last modified: December 2009

URL: http://cxc-newtest.cfa.harvard.edu/ciao4.2/transform.sl.html
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AHELP for CIAO 4.2

transform

Context: sl.transform

Synopsis

TRANSFORMS - A high-level interface for the Transform library

Description

TRANSFORMS is a software package developed by the Chandra X-Ray Center (CXC) to provide a means of applying mathematical operations to data in order to convert it from one reference frame to another. Various Transform objects can be strung together to create complex operations.

The library can be used as a standalone system, and is incorporated into the CRATES package to support the generation and use of "virtual" data objects (see "ahelp cratedata"). To date, there is one Transform flavor defined:

  • WCSTAN - WCS Tangent plane projection

To use the transform code in S-Lang say

require ("transform");

There are help files for each of the Transform commands:

"ahelp -c sl.transform"

Bugs

See the bug pages on the CIAO website for an up-to-date listing of known bugs.


Last modified: December 2009