[GRASS-dev] [GRASS GIS] #3356: v.to.db: incorrect area calculations in lat-long location
GRASS GIS
trac at osgeo.org
Sun Jun 4 15:06:51 PDT 2017
#3356: v.to.db: incorrect area calculations in lat-long location
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Reporter: mlennert | Owner: grass-dev@…
Type: defect | Status: new
Priority: normal | Milestone: 7.4.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.to.db area lat-long
CPU: Unspecified | Platform: Unspecified
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Comment (by annakrat):
I fixed the rendering issue in r71163 and r71164. But the area computation
problem must be somewhere in
[https://grass.osgeo.org/programming7/area__poly1_8c.html#af6f1f53bacc34249be98006c95369695
G_ellipsoid_polygon_area], probably related to very small numbers, but I
couldn't pinpoint the problem. There is something specific about this
polygon, when I draw a similar one, it gives more reasonable results.
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Ticket URL: <https://trac.osgeo.org/grass/ticket/3356#comment:5>
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