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Add CSV test and documentation

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Eric Fischer
2017-12-13 11:32:19 -08:00
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tippecanoe
==========
Builds [vector tilesets](https://www.mapbox.com/developers/vector-tiles/) from large (or small) collections of [GeoJSON](http://geojson.org/) or [Geobuf](https://github.com/mapbox/geobuf) features,
Builds [vector tilesets](https://www.mapbox.com/developers/vector-tiles/) from large (or small) collections of [GeoJSON](http://geojson.org/), [Geobuf](https://github.com/mapbox/geobuf), or [CSV](https://en.wikipedia.org/wiki/Comma-separated_values) features,
[like these](MADE_WITH.md).
[![Build Status](https://travis-ci.org/mapbox/tippecanoe.svg)](https://travis-ci.org/mapbox/tippecanoe)
@@ -127,11 +127,14 @@ If your input is formatted as newline-delimited GeoJSON, use `-P` to make input
### Input files and layer names
* _name_`.json` or _name_`.geojson`: Read the named GeoJSON input file into a layer called _name_.
* _name_`.geobuf` or _name_`.geobuf`: Read the named Geobuf input file into a layer called _name_.
* _name_`.geobuf`: Read the named Geobuf input file into a layer called _name_.
* _name_`.csv`: Read the named CSV input file into a layer called _name_.
* `-l` _name_ or `--layer=`_name_: Use the specified layer name instead of deriving a name from the input filename or output tileset. If there are multiple input files
specified, the files are all merged into the single named layer, even if they try to specify individual names with `-L`.
* `-L` _name_`:`_file.json_ or `--named-layer=`_name_`:`_file.json_: Specify layer names for individual files. If your shell supports it, you can use a subshell redirect like `-L` _name_`:<(cat dir/*.json)` to specify a layer name for the output of streamed input.
CSV input files currently support only Point geometries, from columns named `latitude`, `longitude`, `lat`, `lon`, `long`, `lng`, `x`, or `y`.
### Parallel processing of input
* `-P` or `--read-parallel`: Use multiple threads to read different parts of each GeoJSON input file at once.