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Improvements to line_interpolate_point() docs

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- Make it more obvious that the distance is in CRS units, not a percentage, on the first example
- Add example that ends up with floating point coordinates
- Add example that returns NULL
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Hannes 2022-08-21 14:13:42 +02:00 committed by Nyall Dawson
parent 81ac7eb29d
commit d8d850c2ed
1 changed files with 7 additions and 1 deletions
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8
resources/function_help/json/line_interpolate_point
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@ -11,8 +11,14 @@
"description": "distance along line to interpolate"
}],
"examples": [{
"expression": "geom_to_wkt(line_interpolate_point(geometry:=geom_from_wkt('LineString(0 0, 10 0)'),distance:=5))",
"expression": "geom_to_wkt(line_interpolate_point(geometry:=geom_from_wkt('LineString(0 0, 8 0)'), distance:=5))",
"returns": "'Point (5 0)'"
}, {
"expression": "geom_to_wkt(line_interpolate_point(geometry:=geom_from_wkt('LineString(0 0, 1 1, 2 0)'), distance:=2.1))",
"returns": "'Point (1.48492424 0.51507576)'"
}, {
"expression": "geom_to_wkt(line_interpolate_point(geometry:=geom_from_wkt('LineString(0 0, 1 0)'), distance:=2))",
"returns": "NULL"
}],
"tags": ["distance", "interpolated", "linestring", "point", "specified", "along"]
}