How to visualize a tipsy file with glnemo2

Convert to gadget2 file format using '''tipsy2gadget''' program

So far glnemo2 does not support natively tipsy file format, therefore you have to convert it in a known file format like gadget2

tipsy2gadget in=??? out=??? scale=100 

tipsy2gadget help=h
in               : tipsy input file  [???]
out              : gadget2 output file) [???]
scale            : scaling factor (pos,hsml) [100]

example :

tipsy2gadget planck.64_64.zoom.DM.02000 planck.64_64.zoom.DM.02000.g2

planck.64_64.zoom.DM.02000.g2 is the gadget2 file created

get some info from gadget file using '''uns_info''' program

ouzo:/home/jcl> uns_info planck.64_64.zoom.DM.02000.g2
**************************************************
File name : planck.64_64.zoom.DM.02000.g2
File type : Gadget2
Nbody selected = 673177
Time=0
==================================================
halo    :   673177
mass[1] =  1.211165e-06 1.211165e-06 1.211165e-06 
           1.211165e-06 1.211165e-06 1.211165e-06 
           . . .
pos [3] =  4.870900e+01 -4.669364e+01 4.757927e+01 
           -4.897452e+01 -4.635316e+01 4.848135e+01 
           . . .
vel [3] =  -2.291998e-02 2.731730e-02 -4.330940e-02 
           -1.046871e-02 3.446640e-02 -3.198051e-02 
           . . .
id  [1] =  0 1 2 
           3 4 5 
           . . .

• We can see that there is only one component here : dark matter halo

• Visualize gadget file with glnemo2

glnemo2 planck.64_64.zoom.DM.02000.g2

Compute the density with '''uns_density''' program

uns_density  help=h
in               : UNS input file (gadget|nemo)                        [???]
out              : output file                                         [???]
select           : component selected (disk,stars,halo,gas,range)      [???]
m                : 0: Ferrers  method, 1:hackdens method               [0]
K                : number of neighbours                                [32]
N                : order of Ferrers kernel                             [1]
ncrit            : ncrit value, if empty=max(1,K/4)                    []
time             : selected time                                       [all]
first            : add a trailing numbering to the first output file  [f]
offset           : +/- time offset                                     [0.01]

uns_density planck.64_64.zoom.DM.02000.g2 planck.64_64.zoom.DM.02000.g2.dens halo

We compute density on halo component

• visualize with glnemo2