HoloMap.Source.Vector (HoloMap v0.1.0)

Vector tiles, from a TileJSON endpoint or an explicit tile URL template.

<HoloMap.Source.Vector id="basemap" url="https://tiles.example.com/basemap.json" />

<HoloMap.Source.Vector
  id="parcels"
  tiles={["https://tiles.example.com/parcels/{z}/{x}/{y}.pbf"]}
  min_zoom={8}
  max_zoom={14}
/>

Layers reading from a vector source must set source_layer. A vector tile carries several named layers and MapLibre has no way to guess which one is meant:

<HoloMap.Layer.Fill id="water" source="basemap" source_layer="water"
                    paint={%{fill_color: "#a5d8ff"}} />

Props

Prop	Type	Notes
`id`	string	Required. Referenced by layers' `source` prop
`url`	string	TileJSON endpoint. Supply this or `tiles`
`tiles`	list	Tile URL templates containing `{z}`, `{x}`, `{y}`
`min_zoom` / `max_zoom`	number	Zoom range the tiles exist at
`bounds`	list	`[west, south, east, north]` extent of the data
`scheme`	string	`"xyz"` (default) or `"tms"`
`promote_id`	string or map	Property to use as the feature id
`volatile`	boolean	Skip the tile cache
`attribution`	string	Attribution text

Changing any of these is a structural update: the source is torn down and rebuilt, and the layers on top of it are detached and re-added around that.

Summary

Functions

__is_hologram_component__()

Returns true to indicate that the callee module is a component module (has "use Hologram.Component" directive).

__props__()

Returns the list of property definitions for the compiled component.

Functions

__is_hologram_component__()

@spec __is_hologram_component__() :: boolean()

Returns true to indicate that the callee module is a component module (has "use Hologram.Component" directive).

Examples

iex> __is_hologram_component__()
true

props()

@spec __props__() :: [{atom(), atom(), keyword()}]

Returns the list of property definitions for the compiled component.