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Update 04-measures-functions.md

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Iñigo Medina 2018-04-13 12:04:50 +02:00 committed by GitHub
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docs/reference/04-measures-functions.md
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@ -63,7 +63,7 @@ value | the raw or normalized measure
Add a measure to an empty numeric column based on polygons in your table Add a measure to an empty numeric column based on polygons in your table
```SQL ```sql
UPDATE tablename UPDATE tablename
SET local_male_population = OBS_GetUSCensusMeasure(the_geom, 'Male Population') SET local_male_population = OBS_GetUSCensusMeasure(the_geom, 'Male Population')
``` ```
@ -94,7 +94,7 @@ value | the raw or normalized measure
Add a measure to an empty numeric column based on point locations in your table Add a measure to an empty numeric column based on point locations in your table
```SQL ```sql
UPDATE tablename UPDATE tablename
SET median_home_value_sqft = OBS_GetMeasure(the_geom, 'us.zillow.AllHomes_MedianValuePerSqft') SET median_home_value_sqft = OBS_GetMeasure(the_geom, 'us.zillow.AllHomes_MedianValuePerSqft')
``` ```
@ -125,7 +125,7 @@ value | the raw or normalized measure
Add a measure to an empty column based on polygons in your table Add a measure to an empty column based on polygons in your table
```SQL ```sql
UPDATE tablename UPDATE tablename
SET household_count = OBS_GetMeasure(the_geom, 'us.census.acs.B11001001') SET household_count = OBS_GetMeasure(the_geom, 'us.census.acs.B11001001')
``` ```
@ -159,7 +159,7 @@ value | the raw measure associated with `geom_ref`
Add a measure to an empty column based on county geoids in your table Add a measure to an empty column based on county geoids in your table
```SQL ```sql
UPDATE tablename UPDATE tablename
SET household_count = OBS_GetMeasureById(geoid_column, 'us.census.acs.B11001001', 'us.census.tiger.county') SET household_count = OBS_GetMeasureById(geoid_column, 'us.census.acs.B11001001', 'us.census.tiger.county')
``` ```
@ -191,7 +191,7 @@ value | a text based category found at the supplied point
Add the Category to an empty column text column based on point locations in your table Add the Category to an empty column text column based on point locations in your table
```SQL ```sql
UPDATE tablename UPDATE tablename
SET segmentation = OBS_GetCategory(the_geom, 'us.census.spielman_singleton_segments.X55') SET segmentation = OBS_GetCategory(the_geom, 'us.census.spielman_singleton_segments.X55')
``` ```
@ -288,7 +288,7 @@ data, using a boundary relevant for the geometry provided and latest timespan.
Limit to only the most recent column most relevant to the extent & density of Limit to only the most recent column most relevant to the extent & density of
input geometries in `tablename`. input geometries in `tablename`.
```SQL ```sql
SELECT OBS_GetMeta( SELECT OBS_GetMeta(
ST_SetSRID(ST_Extent(the_geom), 4326), ST_SetSRID(ST_Extent(the_geom), 4326),
'[{"numer_id": "us.census.acs.B01003001"}]', '[{"numer_id": "us.census.acs.B01003001"}]',
@ -300,7 +300,7 @@ SELECT OBS_GetMeta(
Obtain metadata that can augment with one additional column of US population Obtain metadata that can augment with one additional column of US population
data, using census tract boundaries. data, using census tract boundaries.
```SQL ```sql
SELECT OBS_GetMeta( SELECT OBS_GetMeta(
ST_SetSRID(ST_Extent(the_geom), 4326), ST_SetSRID(ST_Extent(the_geom), 4326),
'[{"numer_id": "us.census.acs.B01003001", "geom_id": "us.census.tiger.census_tract"}]', '[{"numer_id": "us.census.acs.B01003001", "geom_id": "us.census.tiger.census_tract"}]',
@ -312,7 +312,7 @@ SELECT OBS_GetMeta(
Obtain metadata that can augment with two additional columns, one for total Obtain metadata that can augment with two additional columns, one for total
population and one for male population. population and one for male population.
```SQL ```sql
SELECT OBS_GetMeta( SELECT OBS_GetMeta(
ST_SetSRID(ST_Extent(the_geom), 4326), ST_SetSRID(ST_Extent(the_geom), 4326),
'[{"numer_id": "us.census.acs.B01003001"}, {"numer_id": "us.census.acs.B01001002"}]', '[{"numer_id": "us.census.acs.B01003001"}, {"numer_id": "us.census.acs.B01001002"}]',
@ -360,7 +360,7 @@ errors | A text array with all possible errors
Validate metadata with two additional columns of US census data; using a boundary relevant for the geometry provided and the latest timespan. Limited to the most recent column, and the most relevant, based on the extent and density of input geometries in `tablename`. Validate metadata with two additional columns of US census data; using a boundary relevant for the geometry provided and the latest timespan. Limited to the most recent column, and the most relevant, based on the extent and density of input geometries in `tablename`.
```SQL ```sql
SELECT OBS_MetadataValidation( SELECT OBS_MetadataValidation(
ST_SetSRID(ST_Extent(the_geom), 4326), ST_SetSRID(ST_Extent(the_geom), 4326),
ST_GeometryType(the_geom), ST_GeometryType(the_geom),
@ -408,7 +408,7 @@ array.
Obtain population densities for every geometry in a table, keyed by cartodb_id: Obtain population densities for every geometry in a table, keyed by cartodb_id:
```SQL ```sql
WITH meta AS ( WITH meta AS (
SELECT OBS_GetMeta( SELECT OBS_GetMeta(
ST_SetSRID(ST_Extent(the_geom), 4326), ST_SetSRID(ST_Extent(the_geom), 4326),
@ -423,7 +423,7 @@ FROM OBS_GetData((SELECT ARRAY_AGG((the_geom, cartodb_id)::geomval) FROM tablena
Update a table with a blank numeric column called `pop_density` with population Update a table with a blank numeric column called `pop_density` with population
densities: densities:
```SQL ```sql
WITH meta AS ( WITH meta AS (
SELECT OBS_GetMeta( SELECT OBS_GetMeta(
ST_SetSRID(ST_Extent(the_geom), 4326), ST_SetSRID(ST_Extent(the_geom), 4326),
@ -444,7 +444,7 @@ Update a table with two measurements at once, population density and household
density. The table should already have a Numeric column `pop_density` and density. The table should already have a Numeric column `pop_density` and
`household_density`. `household_density`.
```SQL ```sql
WITH meta AS ( WITH meta AS (
SELECT OBS_GetMeta( SELECT OBS_GetMeta(
ST_SetSRID(ST_Extent(the_geom),4326), ST_SetSRID(ST_Extent(the_geom),4326),
@ -507,7 +507,7 @@ array.
Obtain population densities for every row of a table with FIPS code county IDs Obtain population densities for every row of a table with FIPS code county IDs
(USA). (USA).
```SQL ```sql
WITH meta AS ( WITH meta AS (
SELECT OBS_GetMeta( SELECT OBS_GetMeta(
ST_SetSRID(ST_Extent(the_geom), 4326), ST_SetSRID(ST_Extent(the_geom), 4326),
@ -522,7 +522,7 @@ Update a table with population densities for every FIPS code county ID (USA).
This table has a blank column called `pop_density` and fips codes stored in a This table has a blank column called `pop_density` and fips codes stored in a
column `fips`. column `fips`.
```SQL ```sql
WITH meta AS ( WITH meta AS (
SELECT OBS_GetMeta( SELECT OBS_GetMeta(
ST_SetSRID(ST_Extent(the_geom), 4326), ST_SetSRID(ST_Extent(the_geom), 4326),