101 lines
3.1 KiB
Markdown
101 lines
3.1 KiB
Markdown
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## Layer Source Object
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### Standard Layer Source Object (_type: 'cartodb'_)
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Used for most maps with tables that are set to public or public with link.
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##### Arguments
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Layer Source Objects are defined with the [Layergroup Configurations](http://docs.carto.com/carto-engine/maps-api/mapconfig/#layergroup-configurations).
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Name |Description
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--- | ---
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type | A string value that defines the layer type. Required.
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options | Options vary, depending on the `type` of layer source you are using:
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--- | ---
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|_ `mapnik`| See [Mapnik Layer Options](http://docs.carto.com/carto-engine/maps-api/mapconfig/#mapnik-layer-options).
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|_ `cartodb` | An alias for Mapnik (for backward compatibility).
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|_ `torque` | See [Torque Layer Options](http://docs.carto.com/carto-engine/maps-api/mapconfig/#torque-layer-options).
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|_ `http` | See [HTTP Layer Options](http://docs.carto.com/carto-engine/maps-api/mapconfig/#http-layer-options).
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|_ `plain` | See [Plain Layer Options](http://docs.carto.com/carto-engine/maps-api/mapconfig/#plain-layer-options).
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|_ `named` | See [Named Map Layer Options](http://docs.carto.com/carto-engine/maps-api/mapconfig/#named-map-layer-options).
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##### Example
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```javascript
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{
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user_name: 'your_user_name', // Required
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type: 'cartodb', // Required
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sublayers: [{
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sql: "SELECT * FROM table_name", // Required
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cartocss: '#table_name {marker-fill: #F0F0F0;}', // Required
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interactivity: "column1, column2, ...", // Optional
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},
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{
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sql: "SELECT * FROM table_name", // Required
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cartocss: '#table_name {marker-fill: #F0F0F0;}', // Required
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interactivity: "column1, column2, ...", // Optional
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},
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...
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]
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}
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```
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For other layer source definitions, see [this example](https://github.com/CartoDB/cartodb.js/blob/4ba5148638091fd2c194f48b2fa3ed6ac4ecdb23/examples/layer_definition.html).
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### Named Maps Layer Source Object (_type: 'namedmap'_)
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Used for making public maps with private data. See [Named Maps](http://docs.carto.com/carto-engine/maps-api/named-maps/) for more information.
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##### Example
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```javascript
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{
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user_name: 'your_user_name', // Required
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type: 'namedmap', // Required
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named_map: {
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name: 'name_of_map', // Required
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// Optional
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layers: [{
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layer_name: "sublayer0", // Optional
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interactivity: "column1, column2, ..." // Optional
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},
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{
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layer_name: "sublayer1",
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interactivity: "column1, column2, ..."
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},
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...
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],
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// Optional
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params: {
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color: "hex_value",
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num: 2
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}
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}
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}
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```
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### Multiple types of layers Source Object
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`cartodb.createLayer` combining multiple types of layers and setting a filter
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##### Example
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```javascript
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cartodb.createLayer(map, {
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user_name: 'examples',
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type: 'cartodb',
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sublayers: [
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{
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type: "http",
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urlTemplate: "http://{s}.basemaps.cartocdn.com/dark_nolabels/{z}/{x}/{y}.png",
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subdomains: [ "a", "b", "c" ]
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},
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{
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sql: 'select * from country_boundaries',
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cartocss: '#layer { polygon-fill: #F00; polygon-opacity: 0.3; line-color: #F00; }'
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},
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],
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}, { filter: ['http', 'mapnik'] })
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```
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