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Update routing_functions.md

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Carla
2016-02-12 15:26:46 +01:00
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doc/routing_functions.md
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# Routing functions
The following rouging functions are available, grouped by categories.
The following routing functions are available, grouped by categories.
## Isolines
This function provides an isolines generator sirves based on time or distance.
This function provides an isolines generator service based on time or distance.
### cdb_isodistance(_source geometry, mode text, range integer[], options text[]_)
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Name | Type | Description | Accepted values
--- | --- | --- | ---
`source` | `geometry` | Source point, in 4326 projection, taken as the start point
`mode` | `geometry` | Type of transport used to calculate the isolines. | `car` and `walk`
`mode` | `geometry` | Type of transport used to calculate the isolines. | `car` or `walk`
`range` | `integer[]` | Range of the isoline in meters
`options` | `text[]` | Multiple options to add more capabilities to the analysis. See the options section to know more.
@@ -51,7 +51,7 @@ SELECT * FROM cdb_isodistance('POINT(-3.70568 40.42028)'::geometry, 'walk', ARRA
### cdb_isochrone(_source geometry, mode text, range integer[], options text[]_)
This function uses the same parameters and info as the `cdb_isodistance` function with the difference that the range is measured in seconds instead of meters
This function uses the same parameters and information as the `cdb_isodistance` function with the difference that the range is measured in seconds instead of meters.
#### Example