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doc/boundary_functions.md
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# Boundary Functions
Use the following functions to retrieve [Boundary](/carto-engine/data/overview/#boundary-data) data. Data ranges from small areas (e.g. US Census Block Groups) to large areas (e.g. Countries). You can access boundaries by point location lookup, bounding box lookup, direct ID access and several other methods described below.
Use the following functions to retrieve [Boundary](https://carto.com/docs/carto-engine/data/overview/#boundary-data) data. Data ranges from small areas (e.g. US Census Block Groups) to large areas (e.g. Countries). You can access boundaries by point location lookup, bounding box lookup, direct ID access and several other methods described below.
You can [access](http://docs/carto-engine/data/accessing/#accessing-the-data-observatory) boundaries through the CARTO Editor. The same methods will work if you are using the CARTO Engine to develop your application. We [encourage you](http://docs/carto-engine/data/accessing/#best-practices) to use table modifying methods (UPDATE and INSERT) over dynamic methods (SELECT).
You can [access](https://carto.com/docs/carto-engine/data/accessing) boundaries through the CARTO Editor. The same methods will work if you are using the CARTO Engine to develop your application. We [encourage you](http://docs/carto-engine/data/accessing/#best-practices) to use table modifying methods (UPDATE and INSERT) over dynamic methods (SELECT).
## OBS_GetBoundariesByGeometry(polygon geometry, geometry_id text)
@ -91,14 +91,14 @@ FROM OBS_GetPointsByGeometry(
## OBS_GetBoundary(point_geometry, boundary_id)
The ```OBS_GetBoundary(point_geometry, boundary_id)``` method returns a boundary geometry defined as overlapping the point geometry and from the desired boundary set (e.g. Census Tracts). See the [Boundary ID Glossary](http://docs/carto-engine/data/glossary/#boundary-ids). This is a useful method for performing aggregations of points.
The ```OBS_GetBoundary(point_geometry, boundary_id)``` method returns a boundary geometry defined as overlapping the point geometry and from the desired boundary set (e.g. Census Tracts). See the [Boundary ID Glossary](https://carto.com/docs/carto-engine/data/glossary/#boundary-ids). This is a useful method for performing aggregations of points.
#### Arguments
Name | Description
--- | ---
point_geometry | a WGS84 polygon geometry (the_geom)
boundary_id | a boundary identifier from the [Boundary ID Glossary](http://docs/carto-engine/data/glossary/#boundary-ids)
boundary_id | a boundary identifier from the [Boundary ID Glossary](https://carto.com/docs/carto-engine/data/glossary/#boundary-ids)
timespan (optional) | year(s) to request from (`NULL` (default) gives most recent)
#### Returns
@ -131,7 +131,7 @@ The ```OBS_GetBoundaryId(point_geometry, boundary_id)``` returns a unique geomet
Name |Description
--- | ---
point_geometry | a WGS84 point geometry (the_geom)
boundary_id | a boundary identifier from the [Boundary ID Glossary](http://docs/carto-engine/data/glossary/#boundary-ids)
boundary_id | a boundary identifier from the [Boundary ID Glossary](https://carto.com/docs/carto-engine/data/glossary/#boundary-ids)
timespan (optional) | year(s) to request from (`NULL` (default) gives most recent)
#### Returns
@ -164,7 +164,7 @@ The ```OBS_GetBoundaryById(geometry_id, boundary_id)``` returns the boundary geo
Name | Description
--- | ---
geometry_id | a string identifier for a Boundary geometry
boundary_id | a boundary identifier from the [Boundary ID Glossary](http://docs/carto-engine/data/glossary/#boundary-ids)
boundary_id | a boundary identifier from the [Boundary ID Glossary](https://carto.com/docs/carto-engine/data/glossary/#boundary-ids)
timespan (optional) | year(s) to request from (`NULL` (default) gives most recent)
#### Returns

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doc/discovery_functions.md
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# Discovery Functions
If you are using the [discovery methods](http://docs/carto-engine/data/overview/#discovery-methods) from the Data Observatory, use the following functions to retrieve [boundary](/carto-engine/data/overview/#boundary-data) and [measures](http://docs/carto-engine/data/overview/#measures-data) data.
If you are using the [discovery methods](https://carto.com/docs/carto-engine/data/overview/#discovery-methods) from the Data Observatory, use the following functions to retrieve [boundary](https://carto.com/docs/carto-engine/data/overview/#boundary-data) and [measures](https://carto.com/docs/carto-engine/data/overview/#measures-data) data.
## OBS_Search(search_term)
@ -47,7 +47,7 @@ A TABLE containing the following properties
Key | Description
--- | ---
boundary_id | a boundary identifier from the [Boundary ID Glossary](http:/docs/carto-engine/data/glossary/#boundary-ids)
boundary_id | a boundary identifier from the [Boundary ID Glossary](https://carto.com/docs/carto-engine/data/glossary/#boundary-ids)
description | a brief description of the boundary dataset
time_span | the timespan attached the boundary. this does not mean that the boundary is invalid outside of the timespan, but is the explicit timespan published with the geometry.

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doc/measures_functions.md
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# Measures Functions
[Data Observatory Measures](/carto-engine/data/overview/#measures-methods) are the numerical location data you can access. The measure functions allow you to access individual measures to augment your own data or integrate in your analysis workflows. Measures are used by sending an identifier or a geometry (point or polygon) and receiving back a measure (an absolute value) for that location.
[Data Observatory Measures](https://carto.com/docs/carto-engine/data/overview/#measures-methods) are the numerical location data you can access. The measure functions allow you to access individual measures to augment your own data or integrate in your analysis workflows. Measures are used by sending an identifier or a geometry (point or polygon) and receiving back a measure (an absolute value) for that location.
There are hundreds of measures and the list is growing with each release. You can currently discover and learn about measures contained in the Data Observatory by downloading our [Data Catalog](http://data-observatory.s3.amazonaws.com/observatory.pdf).
You can [access](http://docs/carto-engine/data/accessing/#accessing-the-data-observatory) measures through the CARTO Editor. The same methods will work if you are using the CARTO Engine to develop your application. We [encourage you](http://docs/carto-engine/data/accessing/#best-practices) to use table modifying methods (UPDATE and INSERT) over dynamic methods (SELECT).
You can [access](https://carto.com/docs/carto-engine/data/accessing) measures through the CARTO Editor. The same methods will work if you are using the CARTO Engine to develop your application. We [encourage you](https://carto.com/docs/carto-engine/data/accessing/#best-practices) to use table modifying methods (UPDATE and INSERT) over dynamic methods (SELECT).
## OBS_GetUSCensusMeasure(point geometry, measure_name text)
@ -15,7 +15,7 @@ The ```OBS_GetUSCensusMeasure(point, measure_name)``` function returns a measure
Name |Description
--- | ---
point | a WGS84 point geometry (the_geom)
measure_name | a human readable name of a US Census variable. The list of measure_names is [available in the Glossary](http://docs/carto-engine/data/glossary/#obsgetuscensusmeasure-names-table).
measure_name | a human readable name of a US Census variable. The list of measure_names is [available in the Glossary](https://carto.com/docs/carto-engine/data/glossary/#obsgetuscensusmeasure-names-table).
normalize | for measures that are are **sums** (e.g. population) the default normalization is 'area' and response comes back as a rate per square kilometer. Other options are 'denominator', which will use the denominator specified in the [Data Catalog](http://data-observatory.s3.amazonaws.com/observatory.pdf) (optional)
boundary_id | source of geometries to pull measure from (e.g., 'us.census.tiger.census_tract')
time_span | time span of interest (e.g., 2010 - 2014)
@ -46,7 +46,7 @@ The ```OBS_GetUSCensusMeasure(point, measure_name)``` function returns a measure
Name |Description
--- | ---
polygon | a WGS84 polygon geometry (the_geom)
measure_name | a human readable string name of a US Census variable. The list of measure_names is [available in the Glossary](http://docs/carto-engine/data/glossary/#obsgetuscensusmeasure-names-table).
measure_name | a human readable string name of a US Census variable. The list of measure_names is [available in the Glossary](https://carto.com/docs/carto-engine/data/glossary/#obsgetuscensusmeasure-names-table).
normalize | for measures that are **sums** (e.g. population) the default normalization is 'none' and response comes back as a raw value. Other options are 'denominator', which will use the denominator specified in the [Data Catalog](http://data-observatory.s3.amazonaws.com/observatory.pdf) (optional)
boundary_id | source of geometries to pull measure from (e.g., 'us.census.tiger.census_tract')
time_span | time span of interest (e.g., 2010 - 2014)