Method: Wcs::WorldCoor#initialize

Defined in:

lib/wcs/libdoc.rb

#initiallize(cra, cdec, secpix, xrpix, yrpix, nxpix, nypix, rotate, equinox, proj) ⇒ WorldCoor #initialize(naxis1, naxis2, ctype1, ctype2, crpix1, crpix2, crval1, crval2, cd, cdelt1, cdelt2, crota, equinox, epoch) ⇒ WorldCoor #initialize(hstring, wcsname) ⇒ WorldCoor

set up a WCS structure from arguments

Overloads:

• #initiallize(cra, cdec, secpix, xrpix, yrpix, nxpix, nypix, rotate, equinox, proj) ⇒ WorldCoor

  Parameters:

  • cra (Float) —

    Center right ascension in degrees

  • cdec (Float) —

    Center declination in degrees

  • secpix (Float) —

    Number of arcseconds per pixel

  • xrpix (Float) —

    Reference pixel X coordinate

  • yrpix (Float) —

    Reference pixel X coordinate

  • nxpix (Integer) —

    Number of pixels along x-axis

  • nypix (Integer) —

    Number of pixels along y-axis

  • rotate (Float) —

    Rotation angle (clockwise positive) in degrees

  • equinox (Integer) —

    Equinox of coordinates, 1950 and 2000 supported

  • epoch (Float) —

    Epoch of coordinates, for FK4/FK5 conversion, no effect if 0

  • proj (String) —

    Projection

• #initialize(naxis1, naxis2, ctype1, ctype2, crpix1, crpix2, crval1, crval2, cd, cdelt1, cdelt2, crota, equinox, epoch) ⇒ WorldCoor

  Parameters:

  • naxis1 (Integer) —

    Number of pixels along x-axis

  • naxis2 (Integer) —

    Number of pixels along y-axis

  • ctype1 (String) —

    FITS WCS projection for axis 1

  • ctype2 (String) —

    FITS WCS projection for axis 2

  • crpix1 (Float) —

    Reference pixel coordinates

  • crpix2 (Float) —

    Reference pixel coordinates

  • crval1 (Float) —

    Coordinate at reference pixel in degrees

  • crval2 (Float) —

    Coordinate at reference pixel in degrees

  • cd (Float) —

    Rotation matrix, used if not NULL

  • cdelt1 (Float) —

    scale in degrees/pixel, if cd is NULL

  • cdelt2 (Float) —

    scale in degrees/pixel, if cd is NULL

  • crota (Float) —

    Rotation angle in degrees, if cd is NULL

  • equinox (Integer) —

    Equinox of coordinates, 1950 and 2000 supported

  • epoch (Float) —

    Epoch of coordinates, for FK4/FK5 conversion

• #initialize(hstring, wcsname) ⇒ WorldCoor

  Parameters:

  • hstring (String) —

    FITS header

  • wcsname (String) —

    WCS name

# File 'lib/wcs/libdoc.rb', line 36

def initialize(*args)
end