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Update 05-boundary-functions.md

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Iñigo Medina
2018-04-13 12:05:22 +02:00
committed by GitHub
parent 2778986e15
commit cff0576368
1 changed files with 3 additions and 3 deletions
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6
docs/reference/05-boundary-functions.md
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@@ -112,7 +112,7 @@ geom | WKB geometry
Overwrite a point geometry with a boundary geometry that contains it in your table
```SQL
```sql
UPDATE tablename
SET the_geom = OBS_GetBoundary(the_geom, 'us.census.tiger.block_group')
```
@@ -145,7 +145,7 @@ geometry_id | a string identifier of a geometry in the Boundaries
Write the US Census block group geoid that contains the point geometry for every row as a new column in your table.
```SQL
```sql
UPDATE tablename
SET geometry_id = OBS_GetBoundaryId(the_geom, 'us.census.tiger.block_group')
```
@@ -178,7 +178,7 @@ geom | a WGS84 polygon geometry
Use a table of `geometry_id`s (e.g., geoid from the U.S. Census) to select the unique boundaries that they correspond to and insert into a table called, `overlapping_polygons`. This is a useful method for creating new choropleths of aggregate data.
```SQL
```sql
INSERT INTO overlapping_polygons (the_geom, geometry_id, point_count)
SELECT
OBS_GetBoundaryById(geometry_id, 'us.census.tiger.county') As the_geom,