Hands on

This section describes a practical guide to use cBalls:

Let us test one of the Takahashi realizations. We download the realization using unix wget command in the terminal:

wget http://cosmo.phys.hirosaki-u.ac.jp/takahasi/allsky_raytracing/sub1/nres12/allskymap_nres12r000.zs9.mag.dat

Then we will have in our working directory the file allskymap_nres12r000.zs9.mag.dat, 3 Gb in size with ~200 million points distributed on the surface of a unit sphere.