mirror of
https://git.osgeo.org/gitea/postgis/postgis
synced 2024-10-25 09:32:46 +00:00
30 lines
2.3 KiB
SQL
30 lines
2.3 KiB
SQL
SELECT 'buffer', astext(buffer('POINT(0 0)', 1, 2));
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SELECT 'geomunion', astext(geomunion('POINT(0 0)', 'POINT(1 1)'));
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SELECT 'convexhull', asewkt(convexhull('POLYGON((0 0, 10 0, 10 10, 0 10, 0 0),(2 2, 2 4, 4 4, 4 2, 2 2))'));
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SELECT 'relate', relate('POINT(0 0)', 'LINESTRING(0 0, 1 1)');
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SELECT 'relate', relate('POINT(0 0)', 'LINESTRING(0 0, 1 1)', 'F0FFFF*02');
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SELECT 'relate', relate('POINT(0 0)', 'LINESTRING(0 0, 1 1)', 'F0FFF0*02');
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SELECT 'disjoint', disjoint('POINT(0 0)', 'LINESTRING(0 0, 1 1)');
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SELECT 'touches', touches('LINESTRING(0 10, 0 -10)', 'LINESTRING(0 0, 1 1)');
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SELECT 'intersects', intersects('LINESTRING(0 10, 0 -10)', 'LINESTRING(0 0, 1 1)');
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SELECT 'crosses', crosses('LINESTRING(0 10, 0 -10)', 'LINESTRING(0 0, 1 1)');
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SELECT 'crosses', crosses('LINESTRING(0 10, 0 -10)', 'LINESTRING(-4 0, 1 1)');
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SELECT 'within', within('POINT(5 5)', 'POLYGON((0 0, 0 10, 10 10, 10 0, 0 0))');
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SELECT 'within', within('POINT(0 0)', 'POLYGON((0 0, 0 10, 10 10, 10 0, 0 0))');
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SELECT 'within', within('POINT(-1 0)', 'POLYGON((0 0, 0 10, 10 10, 10 0, 0 0))');
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SELECT 'contains', contains('POLYGON((0 0, 0 10, 10 10, 10 0, 0 0))','POINT(-1 0)');
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SELECT 'contains', contains('POLYGON((0 0, 0 10, 10 10, 10 0, 0 0))','POINT(0 0)');
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SELECT 'contains', contains('POLYGON((0 0, 0 10, 10 10, 10 0, 0 0))','POINT(5 5)');
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SELECT 'overlaps', overlaps('POLYGON((0 0, 0 10, 10 10, 10 0, 0 0))','POINT(5 5)');
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SELECT 'isvalid', isvalid('POLYGON((0 0, 0 10, 10 10, 10 0, 0 0))');
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SELECT 'isvalid', isvalid('POLYGON((0 0, 0 10, 10 10, -5 10, 10 0, 0 0))');
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SELECT 'intersection', astext(intersection('LINESTRING(0 10, 0 -10)', 'LINESTRING(0 0, 1 1)'));
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SELECT 'difference', astext(difference('LINESTRING(0 10, 0 -10)', 'LINESTRING(0 2, 0 -2)'));
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SELECT 'boundary', astext(boundary('POLYGON((0 0, 0 10, 10 10, 10 0, 0 0),(2 2, 2 4, 4 4, 4 2, 2 2))'));
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SELECT 'symdifference', astext(symdifference('POLYGON((0 0, 0 10, 10 10, 10 0, 0 0),(2 2, 2 4, 4 4, 4 2, 2 2))', 'LINESTRING(0 0, 20 20)'));
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SELECT 'issimple', issimple('POLYGON((0 0, 0 10, 10 10, 10 0, 0 0),(2 2, 2 4, 4 4, 4 2, 2 2))');
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SELECT 'equals', equals('LINESTRING(0 0, 1 1)', 'LINESTRING(1 1, 0 0)');
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SELECT 'pointonsurface', astext(pointonsurface('POLYGON((0 0, 0 10, 10 10, 10 0, 0 0),(2 2, 2 4, 4 4, 4 2, 2 2))'));
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SELECT 'centroid', astext(centroid('POLYGON((0 0, 0 10, 10 10, 10 0, 0 0),(2 2, 2 4, 4 4, 4 2, 2 2))'));
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