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P3D v5 Custom hydro polys make massive holes in ocean

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491
Country
us-missouri
I use USGS NHD statewide shapefiles for a more accurate water environment. Works great inland, but on the coasts I am left with an odd patchwork of holes in my oceans. For example, here is the source data for the Channel Islands, south of Santa Barbara, Calif.

Screenshot 2021-09-24 174249.jpg


And here is the result in P3D:
Screenshot 2021-09-24 174316.jpg

Flying over these holes, it appears as if the seabed has some topography. Anyone know of a good fix to fill the gaps in the ocean back in?
Thanks,
 
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7,450
Country
us-illinois
Hi Chris:

P3D terrain mesh does have Bathymetry (rather than just elevations above MSL) ...in that area.

The modification of terrain mesh by your derived CVX vector Hydro polys should provide superimposed 0 Meters AMSL sea-level polygons to flatten and assign the local water class attributes to create a flat / level sea level surface in all local areas,.

So, one must draw Hydro polys with Flatten and matching local Water Class attributes to be imposed onto the involved terrain quad areas in FS, in order to pre-empt rendering instructions for those areas otherwise provided via the CVX vector custom land class areas you derived from US data sets (which contain only a few circumscribed areas of interest as flatten / water class polys contained in the source data cited above ...rather than a continuous extent of coverage for the entire local area of the ocean surface off ex: Southern California).

p3dv4x_0102-cvx1519-jpg.77184


GaryGB
 

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Messages
491
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us-missouri
I'll see if I can merge my shapefile that excludes stock P3D water polys with my NHD shapefile and tinker with that.
Thanks as always Gary.
 
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