What is it?
This tools allows the user to specify where specifically to release particles prior to tracking particles and pathlines. This may be useful 1) for more complex particle tracking analyses with irregular initial locations, 2) to continue a previous run where particle locations were saved, or 3) to test the boundaries of a contamination plume or other specified extent.How to use it:
1) In the parent window, make sure the box is checked next to the "Release from IGW 3D surf or ptls file" button.2) Select a .ptls or .surf file to use (either pick from previously uploaded file ("Use Uploaded File"), or upload a new file (check the box and click "import", then browse to the file on your computer).
.ptls and .surf files can be saved from a previous model by enabling "Save PTK Results" in the parent window.
If the user wants to generate their own .surf or .ptls file the format is below.
File formats
.ptls format
line 1:##YYYY##MM##DD##0##
where YYYY, MM, and DD are the year month and day.
line 2:
Zone T = "Time=<time> days", i= <i> , J = <j>, F=POINT'
where time = model time, i = number of timesteps, and j = number of particles.
line 3-j: x,y,z
where x,y,z are coordinates for the particle location in the local projection system used by the model.