I compiled grass5.1 today...and absolutely love the new features that
have been added...I played around with the sample data set that came
with it...wonderful stuff...
question, is there any documentation for creating a 3d vector?? Or how
was that done?? This feature could not have come at a better time, and
I would like to try it out for displaying a barrier... is there a quick
and dirty way to make one??
Thanks!!
There is no documentation. All 3D vectors were generated from ascii files,
z is third coordinate. You can look into:
g51test/PERMANENT/tin
g51test/dem
Example of vector ascii line record:
L 2
-7409 -150 161
-7409 -150 169
(i.e. y x z)
Import of 3d ascii:
v.in.ascii -z input=tin output=tin
(Warning: tin generated by 'dem' script is not correct, you can find
in the script that z-coordinate is just read from raster surface and is not
calculated properly.)
Radim
--
LTJG Kevin Slover, NOAA
GIS Specialist/Meteorologist/Oceanographer
Tropical Prediction Center/Technical Support Branch
11691 SW 17th Street Miami FL 33165
(W) 305-229-4456 (F) 305-553-1264