kartotherian/demultiplexer

Name: demultiplexer

Owner: kartotherian

Description: Tile source that directs tile requests to different tile sources depending on the zoom level

Created: 2015-08-28 15:23:43.0

Updated: 2018-05-17 05:46:58.0

Pushed: 2017-09-11 22:13:45.0

Homepage: null

Size: 13

Language: JavaScript

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README

@kartotherian/demultiplexer

Tile source that directs tile requests to different tile sources depending on the zoom level

Usage examples

Scenario: There are two different tile sources, one with the low-zoom earth imagery, and another with the detailed vector-based high-zoom data. Demultiplexer would allow us to return low zoom tiles (e.g. before zoom 6) from one source, and high zoom tiles from another.

eLow:
i: cassandra://...

eHigh:
i: cassandra://...


i: demultiplexer://
rams:
source1: {ref: storeLow}
from1: 0
before1: 6
source2: {ref: storeHigh}
from2: 6
before2: 18

fromN is inclusive, beforeN is exclusive. Configuration must specify a non-duplicate source for every zoom level between minimum and maximum, but minimum may be non-zero.

See https://github.com/kartotherian/kartotherian