TileStache.Goodies.Providers.UtfGridComposite module¶
Composite Provider for UTFGrid layers https://github.com/mapbox/utfgrid-spec/blob/master/1.2/utfgrid.md
Combines multiple UTFGrid layers to create a single result. The given layers will be added to the result in the order they are given. Therefore the last one will have the highest priority.
- Sample configuration:
“provider”: {
“class”: “TileStache.Goodies.Providers.UtfGridComposite:Provider”, “kwargs”: {
“stack”: [
{ “layer_id”: “layer1”, “src”: “my_utf_layer1”, “wrapper”: “grid” }, { “layer_id”: “layer2”, “src”: “my_utf_layer2”, “wrapper”: “grid” }], “layer_id”: “l”, “wrapper”: “grid”
}
}
- stack: list of layers (and properties) to composite together
- layer_id: an id attribute that will be added to each json data object for this layer: { “layer_id”: “layer1”, “name”: “blah”, “address”: “something”} src: layer name of the layer to composite wrapper: the wrapper definition of this layer if there is one (so we can remove it)
layer_id: the key for the layer_id attribute that is added to each data object: { “l”: “layer1”, ...} wrapper: wrapper to add to the resulting utfgrid “WRAPPER({...})”. Usually “grid”
if layer_id is not set in the layer or the provider config then it will not be set on data objects
-
class
TileStache.Goodies.Providers.UtfGridComposite.Provider(layer, stack, layer_id=None, wrapper=None)¶ -
addLayer(resultGrid, gridKeys, gridData, layerDef, coord)¶
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decodeId(id)¶
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encodeId(id)¶
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getTypeByExtension(extension)¶ Get mime-type and format by file extension. This only accepts “json”.
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renderTile(width, height, srs, coord)¶
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writeResult(resultGrid, gridKeys, gridData)¶
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