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[IDV #PLJ-827450]: Slight bug in Grid 2D Trajectory

> Hi Yuan.
> Loving the trajectories in my class this week! Thank you for the effort to 
> create that.
> 
> One slight bug:
> 
> When I draw multiple "Close Polygon" areas around vorticity features at the 
> initial time, then click Create Trajectory, the tracers from the first few 
> polygons appear one timestep downstream. Only the final polygon's tracers are 
> displayed at the initial time. See the image below.
> 
> Brian
> 
Hi Brian,

Always good to hear my favorite feature being used in the classroom.

The initial position of the tracer is a known bug of the ViSAD library. If you 
change it to point, you will see the right position.

Sorry about it.

Yuan

Ticket Details
===================
Ticket ID: PLJ-827450
Department: Support IDV
Priority: Normal
Status: Open
===================
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