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# carto # carto
Is a stylesheet renderer for Mapnik. It's an evolution of the [Cascadenik](https://github.com/mapnik/Cascadenik) idea and language, with an emphasis on speed and flexibility. Is a stylesheet renderer for Mapnik. It's an evolution of the
[Cascadenik](https://github.com/mapnik/Cascadenik) idea and language,
with an emphasis on speed and flexibility.
## Installation ## Reference Documentation
npm install carto * [mapbox.com/carto](http://mapbox.com/carto/)
## MML ## MML
_incompatibility_ _incompatibility_
* MML files are assumed to be JSON, not XML. The files are near-identical to the XML files accepted by Cascadenik, just translated into JSON. * MML files are assumed to be JSON, not XML. The files are near-identical
* Carto will not embed files or download URLs for you. Stylesheets should be embedded directly into your MML JSON and any datasources should be paths (relative or absolute) that would be acceptable in Mapnik XML. to the XML files accepted by Cascadenik, just translated into JSON.
* Carto will not embed files or download URLs for you. Stylesheets should
be embedded directly into your MML JSON and any datasources should be
paths (relative or absolute) that would be acceptable in Mapnik XML.
The [millstone project](https://github.com/mapbox/millstone) aims to fill this need. The [millstone project](https://github.com/mapbox/millstone) aims to fill this need.
carto.js MML: carto.js MML:
@ -231,16 +236,26 @@ String comparisons:
#world[name =~ "A.*"] #world[name =~ "A.*"]
``` ```
## Usage ## Developers
#### Using the binary #### Installation
If you're using [TileMill](http://mapbox.com/tilemill/), you're already
using Carto and don't need to do a thing.
If you're a developer-type and want to use the `carto` binary with
`node.js` (and you have [npm](http://npmjs.org/) installed),
npm install carto
#### From the binary
Install `millstone` to enable support for localizing external resources (URLs and local files) referenced in your mml file. Install `millstone` to enable support for localizing external resources (URLs and local files) referenced in your mml file.
npm install millstone npm install millstone
carto map_file.json carto map_file.json
#### Using the code #### From code
Currently `carto.js` is designed to be invoked from [node.js](http://nodejs.org/). Currently `carto.js` is designed to be invoked from [node.js](http://nodejs.org/).
The `Renderer` interface is the main API for developers, and it takes an MML file as a string as input. The `Renderer` interface is the main API for developers, and it takes an MML file as a string as input.
@ -265,19 +280,6 @@ The `Renderer` interface is the main API for developers, and it takes an MML fil
} }
}); });
## Syntax Highlighting
There's a TextMate and vim bundle that offers syntax highlighting for `.mss` and `.mml` files in the `build` directory.
### TextMate bundle
To install, download or clone this repository, then double-click on the `carto.tmbundle` icon in that folder.
The TextMate bundle **requires** [node-mapnik](https://github.com/mapnik/node-mapnik) and Carto installed globally - the versions that are installed locally in TileMill or other tools can't be automatically discovered.
npm install mapnik -g
npm install carto -g
### Vim ### Vim
To install, download or clone this repository, then add the `vim-carto` To install, download or clone this repository, then add the `vim-carto`
@ -293,7 +295,7 @@ It depends on:
Only for running tests: Only for running tests:
* [expresso](https://github.com/visionmedia/expresso) * [mocha](https://github.com/visionmedia/mocha)
* [sax-js](https://github.com/isaacs/sax-js/) * [sax-js](https://github.com/isaacs/sax-js/)
## Authors ## Authors
@ -301,4 +303,4 @@ Only for running tests:
* Tom MacWright (tmcw) * Tom MacWright (tmcw)
* Konstantin Käfer (kkaefer) * Konstantin Käfer (kkaefer)
* AJ Ashton (ajashton) * AJ Ashton (ajashton)
* Dane Springmeyer (springmeyer) * Dane Springmeyer (springmeyer)