This HTML automatically generated with rman for NEMO
Table of Contents

Name

snapdiagplot - plot diagnostics of an N-body run

Synopsis

snapdiagplot in=snap_file [parameter=value] ...

Description

snapdiagplot plots the diagnostics of an N-body run. As input it needs a snapshot(5NEMO) file. The diagnostics currently displayed, as functions of time, are the total binding energy and the center of mass offset.

Several codes in NEMO write the output format this program expects.

Parameters

The following parameters are recognized.
in=snap_file
Input data is read from snap_file. Default: required.
times=time_range
Only plot frames with time values within time_range, which is of the form, eg, "1.0:1.5,2.5,3.0". Default: all.
exactpot=pot_flag
If set, recompute potential energy from particle data. Note this is O(N^2). Default: false.
eps=softening
If exactpot is set, this softening length is used. Default: 0.05.
formal=formal_flag
If set, generate publication-style plot. Default: false.
tab=table_name
If a table_name is given, time and total energy are written to this table, and no plot is produced. Default: no filename given, plot is made.

See Also

hackcode1(1NEMO) , quadcode(1NEMO) , snapplot(1NEMO) , snapshot(5NEMO) .

Data Format

snapdiagplot expects a Diagnostics set inside a SnapShot. Here is an example of the current contents. Note not all elements are currently being used. 
 set Diagnostics
    double Energy[3] -0.250646 0.252928 -0.503574
    double KETensor[3][3] 0.0895620 -0.000171242 -0.00146190
      -0.000171242 0.0829969 -0.00185623 -0.00146190 -0.00185623
      0.0803691
    double PETensor[3][3] -0.167254 0.00296881 -0.00315221 0.00356183
      -0.165142 0.000637358 -0.00312277 0.000509798 -0.163122
    double AMTensor[3][3] 0.00000 0.00675746 0.00892347 -0.00675746
      0.00000 0.0221447 -0.00892347 -0.0221447 0.00000
    double CMPhaseSpace[2][3] 7.16658e-17 1.24737e-16 3.34476e-17
      1.90820e-17 7.69784e-18 -2.33103e-18
    double cputime 0.000833333
  tes

Author

Joshua E. Barnes

History


dark-ages    0.0 Created    JEB
2-jun-88    1.0 Man Created...       JEB
17-jun-92    1.2 fixed times=; added energy conservation message    PJT
7-mar-22    1.5 add tab=    PJT

Table of Contents