hpx2gs
This IDL facility provides a means to turn a HEALPix map into a image that
can be visualized with
Google Earth
or
Google Sky.
Location in HEALPix directory tree: src/idl/visu/hpx2gs.pro
FORMAT
QUALIFIERS
KEYWORDS
-
COORD_IN=
- 1-character scalar, describing the input data coordinate system:
either 'C' or 'Q' : Celestial2000 = eQuatorial,
'E' : Ecliptic,
'G' : Galactic.
If set, it will over-ride the coordinates read from the FITS file header (when
applicable). In absence of information, the input coordinates is
assumed to be celestial.
The data will be rotated so that the output coordinates are Celestial, as expected by Google Sky
-
/HELP
- Prints out the documentation header
-
KML=
- Name of the KML file to be created (if the .kml suffix is missing,
it will be added automatically)
default:'hpx2googlesky.kml'
-
PNG=
- Name of the PNG overlay file to be created. Only to be used if you want the
filename to be different from the default
(default: same as KML file, with a .png suffix instead
of .kml)
-
RESO_ARCMIN=
- Pixel angular size in arcmin (at the equator) of the cartesian
map generated default:30
-
SUBTITLE=
- information on the data,
will appear in KML file GroundOverlay
description field
-
TITLEPLOT=
- information on the data,
will appear in KML file GroundOverlay
name field
-
/ASINH,
-
COLT=,
FACTOR=,
/FLIP,
GLSIZE=,
GRATICULE=,
HBOUND=,
-
/HIST_EQUAL,
IGLSIZE=,
IGRATICULE=,
/LOG,
MAX=,
MIN=,
-
/NESTED,
OFFSET=,
-
OUTLINE=,
POLARIZATION=,
/PREVIEW,
-
/QUADCUBE,
SAVE=,
/SILENT,
-
TRUECOLORS=
- those keywords have the same meaning as in
cartview and
mollview
DESCRIPTION
hpx2gs reads in a HEALPix sky map in FITS format or from a memory array and generates a
cartesian projection of it in a PNG file, as well as a Google Sky compatible
KML
file. Missing or unobserved pixels in the input data will be
totally 'transparent' in the output file.
RELATED ROUTINES
This section lists the routines related to hpx2gs
-
- see cartview
-
hpx2dm
- turns Healpix maps into DomeMaster images
EXAMPLE:
produces in my_map.kml and in my_map.png an image of the input map that can be seen with
Google Sky.
To do so, start GoogleEarth or GoogleSky and open my_map.kml. Under
MacOSX, simply type open my_map.kml on the command line.
Version 3.30, 2015-10-08