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Revise documentation for multiple layers

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Eric Fischer 2015-03-25 14:00:27 -07:00
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commit e95cc82678
1 changed files with 21 additions and 5 deletions
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README.md
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@ -34,9 +34,10 @@ The easiest way to install tippecanoe on OSX is with [Homebrew](http://brew.sh/)
Usage
-----
tippecanoe -o file.mbtiles [file.json]
tippecanoe -o file.mbtiles [file.json ...]
If the file is not specified, it reads GeoJSON from the standard input.
If no files are specified, it reads GeoJSON from the standard input.
If multiple files are specified, each is placed in its own layer.
The GeoJSON features need not be wrapped in a FeatureCollection.
You can concatenate multiple GeoJSON features or files together,
@ -46,18 +47,33 @@ it encounters.
Options
-------
* -l <i>name</i>: Layer name (default "file" if source is file.json)
### Naming
* -l <i>name</i>: Layer name (default "file" if source is file.json or output is file.mbtiles). Only works if there is only one layer.
* -n <i>name</i>: Human-readable name (default file.json)
### File control
* -o <i>file</i>.mbtiles: Name the output file.
* -f: Delete the mbtiles file if it already exists instead of giving an error
### Zoom levels and resolution
* -z <i>zoom</i>: Base (maxzoom) zoom level (default 14)
* -Z <i>zoom</i>: Lowest (minzoom) zoom level (default 0)
* -d <i>detail</i>: Detail at base zoom level (default 26-basezoom, ~0.5m, for tile resolution of 4096 if -z14)
* -D <i>detail</i>: Detail at lower zoom levels (default 10, for tile resolution of 1024)
* -b <i>pixels</i>: Buffer size where features are duplicated from adjacent tiles (default 5)
### Properties
* -x <i>name</i>: Exclude the named properties from all features
* -y <i>name</i>: Include the named properties in all features, excluding all those not explicitly named
* -X: Exclude all properties and encode only geometries
* -f: Delete the mbtiles file if it already exists instead of giving an error
### Point simplification
* -r <i>rate</i>: Rate at which dots are dropped at lower zoom levels (default 2.5)
* -b <i>pixels</i>: Buffer size where features are duplicated from adjacent tiles (default 5)
* -g <i>gamma</i>: Rate at which especially dense dots are dropped (default 0, for no effect). A gamma of 2 reduces the number of dots less than a pixel apart to the square root of their original number.
Example