Testing the installation

In order to test the success of the installation, one should run the test script as outlined above (ie, make [-f make_file_name ] test). This proceeds as follows:

* moves to test/ subdirectory
* runs synfast (with parameter file syn.par) to produce the polarised sky map file test_map.fits and the corresponding alm coefficients test_alm.fits; one can then compare this to map.fits and alm.fits (supplied)
* runs map2gif to make the image test_map.gif; one can then compare this to map.gif (supplied)
* runs smoothing (with parameter file smo.par) to make test_sm.fits; compare this to map_sm.fits (supplied)
* runs map2gif to make the image test_sm.gif; compare this to map_sm.gif (supplied)
* runs ud_grade (with parameter file udg.par) to degrade the map test.fits to Nside=4. The output is test_LOres.fits; compare this to map_LOres.fits (supplied)
* runs map2gif to make the image test_LOres.gif; compare this to map_LOres.gif (supplied)
* runs hotspot (with parameter file hot.par) to produce a map of the local extrema in test_LOres.fits. The outputs are test_ext.fits, test_min.asc and test_max.asc. Compare this to map_ext.fits, min.asc and max.asc (supplied)
* runs map2gif to make the image test_ext.gif; compare this to map_ext.gif (supplied)
* runs anafast (with parameter file ana.par) to compute the power spectrum of the sky map test.fits. The output is test_cl.fits; compare this to cl_out.fits (supplied)
* runs alteralm (with parameter file alt.par) to modify the alm coefficients read from alm.fits into test_almdec.fits; compare this to almdec.fits (supplied)
* runs median_filter (with parameter file med.par) to produce in test_mf.fits the median filtered map of map.fits ; the former can be compared to map_mf.fits (supplied).
* runs map2gif to make the image test_mf.gif; compare this to map_mf.gif (supplied)
* comes back to main HEALPix directory

The supplied data and parameter files are present in the /Healpix_2.00/test directory, and this is also where the results files are created.

Note: the input power spectrum (in cl.fits) used to generate the test maps is currently the WMAP 1yr best fit, in $(\mu$K)2, and is therefore different from the one included in previous releases (that can still be found in cl_old.fits). See http://lambda.gsfc.nasa.gov/ for details on WMAP and its data products.

In order to test the new HEALPix profile set-up one can then attempt to run any F90 facility from any directory on your system. Similarly, IDL should be tested by invoking hidl or hidlde.

Eric Hivon 2005-08-31