mirror of
https://github.com/qgis/QGIS.git
synced 2025-04-15 00:04:00 -04:00
55027e545f
- New expression functions for area(geom), perimeter(geom), point_n(geom), start_point(geom), end_point(geom), make_point(x,y) - Add new variant to length() function which takes a geometry object, allows for length(geom) evaluation. - Rename x_at, y_at to $x_at, $y_at (alias old names) to reflect that these only work on current feature geometry - Add x(geom), y(geom) functions which return x and y coordinate for point geometries or centroid x/y for non-point geometries (fix #11008)
16 lines
795 B
Plaintext
16 lines
795 B
Plaintext
{
|
|
"function": "length",
|
|
"description": "Returns the number of characters in a string or the length of a geometry linestring.",
|
|
"variants": [
|
|
{ "variant": "String variant",
|
|
"variant_description": "Returns the number of characters in a string.",
|
|
"arguments": [ {"arg":"string","description":"string to count length of"} ],
|
|
"examples": [ { "expression":"length('hello')", "returns":"5"} ] },
|
|
{
|
|
"variant": "Geometry variant",
|
|
"variant_description": "Calculate the length of a geometry line object. Calculations are in the Spatial Reference System of this geometry.",
|
|
"arguments": [ {"arg":"geometry","description":"line geometry object"}],
|
|
"examples": [ { "expression":"length(geom_from_wkt('LINESTRING(0 0, 4 0)'))", "returns":"4.0"}]
|
|
}]
|
|
}
|