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30 lines
1.3 KiB
Plaintext
30 lines
1.3 KiB
Plaintext
{
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"name": "bearing",
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"type": "function",
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"groups": ["GeometryGroup"],
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"description": "Returns the north-based bearing as the angle in radians measured clockwise on the ellipsoid from the vertical on point_a to point_b.",
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"arguments": [{
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"arg": "point_a",
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"description": "point geometry"
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}, {
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"arg": "point_b",
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"description": "point geometry"
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}, {
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"arg": "source_crs",
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"optional": true,
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"description": "an optional string or CRS object representing the source CRS of the points. By default the current layer's CRS is used."
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}, {
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"arg": "ellipsoid",
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"optional": true,
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"description": "an optional string representing the acronym or the authority ID (e.g., 'EPSG:7030') of the ellipsoid on which the bearing should be measured. By default the current project's ellipsoid setting is used."
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}],
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"examples": [{
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"expression": "degrees( bearing( make_point(16198544, -4534850), make_point(18736872, -1877769), 'EPSG:3857', 'EPSG:7030') )",
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"returns": "49.980071"
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}, {
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"expression": "degrees( bearing( make_point(18736872, -1877769), make_point(16198544, -4534850), 'EPSG:3857', 'WGS84') )",
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"returns": "219.282386"
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}],
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"tags": ["measured", "clockwise", "points", "angle", "vertical", "north", "azimuth", "bearing", "radians", "ellipsoid"]
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}
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