name of a FITS file containing the HEALPix map in an extension or in the image field,
or name of an online variable (either array or structure) containing the HEALPix map (See note below);
if Save is set : name of an IDL saveset file containing the HEALPix map stored under the variable data
(default : none)
column of the BIN FITS table to be plotted, can be either
- a name : value given in TTYPEi of the FITS file
NOT case sensitive and can be truncated,
(only letters, digits and underscore are valid)
- an integer : number i of the column containing the data, starting with 1 (also valid if File is an online array)
default:1 for full sky maps, 'SIGNAL' column for FITS files containing cut sky maps
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.
map = findgen(48)
|hpx2gs, map, kml='my_map.kml',title='my map in Google'|
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 3.31, 2017-01-06