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📖 API#

Python Client#

localtileserver.get_or_create_tile_client(source: Path | str | TileClient | DatasetReaderBase, port: int | str = 'default', debug: bool = False)#

A helper to safely get a TileClient from a path on disk.

Note

TODO: There should eventually be a check to see if a TileClient instance exists for the given filename. For now, it is not really a big deal because the default is for all TileClient’s to share a single server.

class localtileserver.client.TilerInterface(source: Path | str | DatasetReaderBase)#

Base TileClient methods and configuration.

This class interfaces directly with rasterio and rio-tiler.

Parameters:

source (pathlib.Path, str, Reader, DatasetReaderBase) – The source dataset to use for the tile client.

property band_names#
bounds(projection: str = 'EPSG:4326', return_polygon: bool = False, return_wkt: bool = False)#
center(projection: str = 'EPSG:4326', return_point: bool = False, return_wkt: bool = False)#

Get center in the form of (y <lat>, x <lon>).

Parameters:

  • projection (str) – The srs or projection as a Proj4 string of the returned coordinates

  • return_point (bool, optional) – If true, returns a shapely.Point object.

  • return_wkt (bool, optional) – If true, returns a Well Known Text (WKT) string of center coordinates.

property dataset#
property default_zoom#
property filename#
property info#
property max_zoom#
property metadata#
property min_zoom#
point(lon: float, lat: float, **kwargs)#
property reader#
thumbnail(indexes: List[int] | None = None, colormap: str | None = None, vmin: float | List[float] | None = None, vmax: float | List[float] | None = None, nodata: int | float | None = None, output_path: Path | None = None, encoding: str = 'PNG', max_size: int = 512)#

Generate a thumbnail preview of the dataset.

Parameters:

  • indexes (int) – The band of the source raster to use (default if None is to show RGB if available). Band indexing starts at 1. This can also be a list of integers to set which 3 bands to use for RGB.

  • colormap (str) – The name of the matplotlib colormap to use when plotting a single band. Default is greyscale.

  • vmin (float) – The minimum value to use when colormapping a single band.

  • vmax (float) – The maximized value to use when colormapping a single band.

  • nodata (float) – The value from the band to use to interpret as not valid data.

tile(z: int, x: int, y: int, indexes: List[int] | None = None, colormap: str | None = None, vmin: float | List[float] | None = None, vmax: float | List[float] | None = None, nodata: int | float | None = None, output_path: Path | None = None, encoding: str = 'PNG')#

Generate a tile from the source raster.

Parameters:

  • z (int) – The zoom level of the tile.

  • x (int) – The x coordinate of the tile.

  • y (int) – The y coordinate of the tile.

  • indexes (int) – The band of the source raster to use (default if None is to show RGB if available). Band indexing starts at 1. This can also be a list of integers to set which 3 bands to use for RGB.

  • colormap (str) – The name of the matplotlib colormap to use when plotting a single band. Default is greyscale.

  • vmin (float) – The minimum value to use when colormapping a single band.

  • vmax (float) – The maximized value to use when colormapping a single band.

  • nodata (float) – The value from the band to use to interpret as not valid data.

class localtileserver.TileClient(source: Path | str | DatasetReaderBase, port: int | str = 'default', debug: bool = False, host: str = '127.0.0.1', client_port: int | None = None, client_host: str | None = None, client_prefix: str | None = None, cors_all: bool = False)#

Tile client interface for generateing and serving tiles.

Parameters:

  • source (pathlib.Path, str, Reader, DatasetReaderBase) – The source dataset to use for the tile client.

  • port (int) – The port on your host machine to use for the tile server. This defaults to getting an available port.

  • debug (bool) – Run the tile server in debug mode.

  • client_port (int) – The port on your client browser to use for fetching tiles. This is useful when running in Docker and performing port forwarding.

  • client_host (str) – The host on which your client browser can access the server.

Jupyter Widget Helpers#

localtileserver.get_leaflet_tile_layer(source: Path | str | TileClient | DatasetReaderBase, port: int | str = 'default', debug: bool = False, indexes: List[int] | None = None, colormap: str | None = None, vmin: float | List[float] | None = None, vmax: float | List[float] | None = None, nodata: int | float | None = None, attribution: str | None = None, **kwargs)#

Generate an ipyleaflet TileLayer for the given TileClient.

Parameters:

  • source (Union[pathlib.Path, str, TileClient, rasterio.io.DatasetReaderBase]) – The source of the tile layer. This can be a path on disk or an already open TileClient

  • port (int) – The port on your host machine to use for the tile server (if creating a tileserver. This is ignored if a file path is given). This defaults to getting an available port.

  • debug (bool) – Run the tile server in debug mode (if creating a tileserver. This is ignored if a file path is given).

  • indexes (int) – The band of the source raster to use (default if None is to show RGB if available). Band indexing starts at 1. This can also be a list of integers to set which 3 bands to use for RGB.

  • colormap (str) – The name of the matplotlib colormap to use when plotting a single band. Default is greyscale.

  • vmin (float) – The minimum value to use when colormapping a single band.

  • vmax (float) – The maximized value to use when colormapping a single band.

  • nodata (float) – The value from the band to use to interpret as not valid data.

  • attribution (str) – Attribution for the source raster. This defaults to a message about it being a local file.

  • **kwargs – All additional keyword arguments are passed to ipyleaflet.TileLayer.

Return type:

ipyleaflet.TileLayer

localtileserver.get_folium_tile_layer(source: Path | str | TileClient | DatasetReaderBase, port: int | str = 'default', debug: bool = False, indexes: List[int] | None = None, colormap: str | None = None, vmin: float | List[float] | None = None, vmax: float | List[float] | None = None, nodata: int | float | None = None, attr: str | None = None, **kwargs)#

Generate a folium TileLayer for the given TileClient.

Parameters:

  • source (Union[pathlib.Path, str, TileClient, rasterio.io.DatasetReaderBase]) – The source of the tile layer. This can be a path on disk or an already open TileClient

  • port (int) – The port on your host machine to use for the tile server (if creating a tileserver. This is ignored if a file path is given). This defaults to getting an available port.

  • debug (bool) – Run the tile server in debug mode (if creating a tileserver. This is ignored if a file path is given).

  • indexes (int) – The band of the source raster to use (default if None is to show RGB if available). Band indexing starts at 1. This can also be a list of integers to set which 3 bands to use for RGB.

  • colormap (str) – The name of the matplotlib colormap to use when plotting a single band. Default is greyscale.

  • vmin (float) – The minimum value to use when colormapping a single band.

  • vmax (float) – The maximized value to use when colormapping a single band.

  • nodata (float) – The value from the band to use to interpret as not valid data.

  • attr (str) – Folium requires the custom tile source have an attribution. This defaults to a message about it being a local file.

  • **kwargs – All additional keyword arguments are passed to folium.TileLayer.

Return type:

folium.TileLayer

Other Helpers#

localtileserver.helpers.save_new_raster(src, data, out_path: str | None = None)#

Save new raster from a numpy array using the metadata of another raster.

Note

Requires rasterio

Parameters:

  • src (str, DatasetReader, TilerInterface) – The source rasterio data whose spatial reference will be copied

  • data (np.ndarray) – The bands of data to save to the new raster

  • out_path (Optional[str]) – The path for which to write the new raster. If None, this will use a temporary file

localtileserver.make_vsi(url: str, **options)#
localtileserver.validate.validate_cog(path: str | Reader | TilerInterface, strict: bool = True, quiet: bool = False) → bool#
localtileserver.helpers.polygon_to_geojson(polygon) → str#

Dump shapely.Polygon to GeoJSON.

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