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iMOD User Manual version 5.2 (html)


9.25PTF-files

A PTF-file (Particle Tracking File) is used in the Interactive Pathline Simulator toolbox (see section 7.15). The file contains the particle settings per group (including nr. of points, flow direction, size of starting point and particle) and the XYZ-coordinates of the starting points.

Variable

Description

NSPG

Number of defined particle groups.

For each group, write the following lines.

NPART, IACT,
ICLR, IREV,
SPWIDTH, PWIDTH,
IRSTRT

  • • NPART: number of particles in this group.

  • • IACT: indicator if this group is active in the IPS simulator.

  • • ICLR: the colour number for a colour display of 16 million colours calculated by the formula IRED + IGREEN*256 + IBLUE*256*256 (IRED, IGREEN and IBLUE all range between 0-256).

  • • IREV: tracking option Forward (IREV=0) or Backward (IREV=1).

  • • SPWIDTH: starting point size.

  • • PWIDTH: particle size.

  • • IRSTRT: start interval randomly, if IRSTRT>0, it is multiplied with a random number to initiate the start time of a particle.

x{i},y{i},z{i}

X, Y and Z coordinate of all NPART particles in this group.

Example of a PTF-file:

pictures/h72-end/iMOD_Files_PTF.png