How to compute the unnormalized density field?

[WangYun1995]

We know that to_mesh can be used to construct the normalized density field (1+delta). I want to know how I can get the unnormalized density field 'rho_(mean) * (1+delta)' ?

[qezlou]

The mean density is just total number of particles / Volume, so something like (1+delta) * cat.csize / cat.attrs['boxsize'] would do that.