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Name

hellersnap - convert Heller’s SPH dumps to snapshot

Synopsis

hellersnap [parameter=value]

Description

Converts Clayton Heller’s NBODY+SPH dump files into standard snapshot(5NEMO) format.

Note that there are different versions around. See also dmp2nemo, written before this version was known.

Parameters

The following parameters are recognized in any order if the keyword is also given:
in=
Input dump file. No default.
out=
Output snapshot file. No default.
key=class
aux=
phi=
acc=
lsfm=
If given, you can override the boolean (fortran) value of the lsfm parameter (last one in the first record of the data). You may need to set this to false, if you want to read certain types of old data.
version=
If given, override any internal versioning that may be used.
headline=
Random verbiage

Format

Dump files are unformatted FORTRAN, that can also be inspected with NEMO’s unfio(1NEMO) program. The following blocks are dumped: 
    1. dmpindx,date,ndim,eqnindx,version,gamma,poly,lsfm    (64 bytes)
    2. tframe,n1,n2 (16 bytes)
    3. class(n0)        ** Key **
    4. state(n0)        
    5. mass(n0)            ** Mass **
    6. x(n0)            ** PhaseSpace **
    7. y(n0)
    8. z(n0)
    9. vx(n0)
    10. vy(n0)
    11. vz(n0)
        
        12. eps(n0)    : dmpindx > 1
        13. phi(n0)            ** Potential **
        14. ax(n0)            ** Acc **
        15. ay(n0)
        16. az(n0)
        17.    smft(n0)    [only if lsfm is TRUE)
        18.    smfz(n0)    [only if lsfm is TRUE)
        19. u(n2)      : dmpindx > 2 && n2 > 0
        20. d(n2)
        21. divv(n2)
        22. udot1(n2)
        23. udot2(n2)
        24. udot3(n2)        [only in version 2]
        25. udot4(n2)        [only in version 2]
        26. h(n2)
        27. wgtmol(n2)        [only in version 2]
        28. frcneu(n2)        [only in version 2]
        29. tau(n2)        [only in version 2]

See Also

unfio(1NEMO) , snapshot(5NEMO)

Files


src/nbody/io    hellersnap.c

Author

Peter Teuben

Update History


26-jun-98    V1.0 Created, for version=1    NEMO
23-may-01    V2.0 included new options, for version=2    PJT

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