Using the HEALPix Fortran 90 facilities

Default file names and directories: for some applications, the HEALPix facilities require some precalculated input files describing the pixel window function and quadrature ring weight (shipped as Healpix/data/pixel_window_n????.fits and Healpix/data/weight_ring_n?????.fits respectively).

By default, files with the very same name will be looked for into: the current directory (.), the parent directory (..), ./data, ../data, $HEALPIX and $HEALPIX/data where $HEALPIX is a system variable defined as the full path to the HEALPix package (see the installation documentation). The user has the possibility to change both the name of those files and their location.

Eric Hivon 2003-02-07