[gdal-dev] Ellipsoidal length of a line

Even Rouault even.rouault at spatialys.com
Sat Jun 15 14:04:18 PDT 2019


$ cat test.csv
id,WKT
1,"LINESTRING(2 49,3 50,4 49)"

$ ogr2ogr test.db test.csv -f sqlite -dsco spatialite=yes -a_srs EPSG:4326

$ ogrinfo test.db -sql "select st_length(geometry, 1) from test" -al -q

Layer name: SELECT
OGRFeature(SELECT):0
  st_length(geometry, 1) (Real) = 265450.955822012


Cf http://www.gaia-gis.it/gaia-sins/spatialite-sql-4.2.0.html#p6

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