[postgis-devel] [PostGIS] #810: Increare accuracy of area calculation
PostGIS
trac at osgeo.org
Wed Jan 26 08:24:19 PST 2011
#810: Increare accuracy of area calculation
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Reporter: hopfgartner | Owner: pramsey
Type: enhancement | Status: new
Priority: medium | Milestone: PostGIS 1.5.3
Component: postgis | Version: 1.5.X
Keywords: |
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In the case of polygons which are "far" away from the origin, as happens
frequently in projected SRS, the applied change may increase the accuracy
of the area calculation by some order of magnitude. Doing some tests on
UTM32N geometries and comparing the result with the result calculated with
a routine written with http://de.php.net/manual/en/book.bc.php the
accuracy improved by 4 to 5 orders of magnitude.
The patch is against PostGIS 1.5.2.
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Ticket URL: <http://trac.osgeo.org/postgis/ticket/810>
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