WCS(3)

PACKAGE
wcs - Routines to support Astronomical sky-projections

PURPOSE
These routines are meant to provide support for Astronomical sky-projections. NOTE: THIS PACKAGE IS WORK IN PROGRESS. THE INTERFACE MAY CHANGE IN THE NEXT RELEASE, POSSIBLY WITHOUT NOTICE.

LIBRARY
karma

LINK WITH
-lkarma

FUNCTIONS

wcs_astro_get_associated
    Create/get associated Astronomical Sky Co-ordinate projections.

wcs_astro_setup
    Setup for Astronomical Sky Co-ordinate projections.

wcs_astro_destroy
    Destroy KwcsAstro object.

wcs_astro_test_radec
    Test if a KwcsAstro object has RA/GLON and DEC/GLAT defined.

wcs_astro_test_velocity
    Test if a KwcsAstro object has velocity or frequency defined.

wcs_astro_test_if_ra
    Test if an axis is a Right Ascension axis.

wcs_astro_test_if_dec
    Test if an axis is a Declination axis.

wcs_astro_test_if_glon
    Test if an axis is a Galactic Longitude axis.

wcs_astro_test_if_glat
    Test if an axis is a Galactic Latitude axis.

wcs_astro_test_if_lon
    Test if an axis is a longitude axis.

wcs_astro_test_if_lat
    Test if an axis is a latitude axis.

wcs_astro_test_if_velocity
    Test if an axis is a velocity axis.

wcs_astro_transform
    Transform between linear and projected co-ordinates.

wcs_astro_transform3
    Transform between linear and projected co-ordinates.

wcs_astro_breakdown_hms
    Breakdown a time value into components.

wcs_astro_format_hms
    Format a time value into a string.

wcs_astro_breakdown_dms
    Break down an angular value into degrees, minutes and seconds.

wcs_astro_format_dms
    Format an angle value into a string.

wcs_astro_format_vel
    Format a velocity value into a string.

wcs_astro_breakdown_time
    Breakdown a time value into components.

wcs_astro_format_time
    Format a time value into a string.

wcs_astro_format
    Format a value. No transformation is applied.

wcs_astro_format_all
    Transform and format all available information.

wcs_astro_get_preferred_units
    Get preferred units for data.

wcs_astro_get_equinox
    Get the Equinox.

wcs_astro_get_reference
    Get reference value for an axis.

wcs_astro_get_increment
    Get increment value for an axis.

wcs_astro_update_location
    Update the location ("CRVALn" and "CRPIXn") values.

wcs_astro_compare_axes
    Compare axis names.

wcs_astro_has_chromatic_aberration
    Test if a co-ordinate system has chromatic aberration.

wcs_compare_grids_2D
    Compare if two images have the same world co-ordinate grid.

AUTHOR
Richard Gooch (rgooch@atnf.csiro.au)

AVAILABLITY
The Karma Distribution is available for anonymous ftp from: ftp://ftp.atnf.csiro.au/pub/software/karma/ ftp://wuarchive.wustl.edu/graphics/graphics/packages/karma/ ftp://ftp.pwr.wroc.pl/pub/karma/ The Karma Home Page is: http://www.atnf.csiro.au/karma/