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Collision Detection stopped working?

PostPosted: Thu Feb 05, 2015 10:09 pm
by Asmith
Hi, up to the last version land collision worked fine, but now it always generates a 0 NM route (no error message). I have the bmp loaded and collision detection turned on. Maybe it has to do with my windows 7 security and not being able to write data to the /program files directory?

Re: Collision Detection stopped working?

PostPosted: Fri Feb 06, 2015 10:41 am
by omar
Open the collision detection (CD) module. If the bitmap legend shows up
in the white area, the CD bitmap is loaded OK. Click stretch to see
the whole map.

You may choose another folder to place data files if Windows
does not allow to write to program files folder.
Note that VRTool itself does not write any data to that folder.

When Weather routing fails with 0 NM, usual causes are:

* No wind is loaded in the starting point ( or the starting point is
so close to wind grid border that interpolation is not possible ).

* Starting point is too close to the land ( as to be considered
a land collision ) . Pick a starting point in the sea.

* The direction between the end-points is so obstructed with land
that no route can be found to satisfy the geometrical constraints.
Use more aggressive WR settings or select points more likely to
see (or at least hear) each other. Current code will not sail out of a maze :roll:

* Polar data file missing or mis-configured.

All data must be there...