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Merge pull request #3344 from nyalldawson/line_merge
[FEATURE] API + expression function for merging linestrings
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Original file line number | Diff line number | Diff line change |
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{ | ||
"name": "line_merge", | ||
"type": "function", | ||
"description":"Returns a LineString or MultiLineString geometry, where any connected LineStrings from the input geometry have been merged into a single linestring. This function will return null if passed a geometry which is not a LineString/MultiLineString.", | ||
"arguments": [ {"arg":"geometry","description":"a LineString/MultiLineString geometry"} ], | ||
"examples": [ { "expression":"geom_to_wkt(line_merge(geom_from_wkt('MULTILINESTRING((0 0, 1 1),(1 1, 2 2))')))", "returns":"'LineString(0 0,1 1,2 2)'"}, | ||
{ "expression":"geom_to_wkt(line_merge(geom_from_wkt('MULTILINESTRING((0 0, 1 1),(11 1, 21 2))')))", "returns":"'MultiLineString((0 0, 1 1),(11 1, 21 2)'"}] | ||
} | ||
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