folium-vectortilelayer 0.2.3

VectorTileLayer plugin for folium

Folium-VectorTileLayer

VectorTileLayer plugin for Folium
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Table of Contents

1. About The Project
   • Built With
2. Getting Started
   • Installation
3. Usage
4. License
5. Contact

About The Project

Follow up on folium-vectorgrid that wraps Leaflet.VectorTileLayer to render Mapbox vector tiles in folium maps.

Other than Leaflet.VectorGrid, Leaflet.VectorTileLayer allows to "overzoom" and "underzoom". Even if the tiling provider only provides map tiles for zoom level 5 through 12, Leaflet.VectorTileLayer utilizes data from these upper and lower bounds to render tiles beyond zoom level 12 and 5 respectively.

Built With

• folium
• Leaflet.VectorTileLayer

Getting Started

Prerequisite

Install Poetry.

Installation

as dependency

poetry add git+https://github.com/iwpnd/folium-vectortilelayer.git

pip install folium-vectortilelayer

local development

1. Clone and install

   git clone https://github.com/iwpnd/folium-vectortilelayer.git
   poetry install
   

2. Test it!

   poe test  # or poetry run pytest .
   

Usage

from folium_vectortilelayer import VectorTileLayer
import folium

url = "https://free.tilehosting.com/data/v3/{z}/{x}/{y}.pbf?token=my_token"

m = folium.Map()
options = {
    "layers": ["my_layer"], # define layer to be shown
    # min zoom of your map,
    # if minZoom < minDetailZoom features in minDetailZoom level are used
    # for minDetailZoom to minZoom
    "minZoom": 8,
    # max zoom of your map,
    # if maxZoom > maxDetailZoom features in maxDetailZoom level are used
    # for maxDetailZoom to maxZoom
    "maxZoom": 18,
    # min zoom level provided by source
    "minDetailZoom": 10,
    # max zoom level provided by source
    "maxDetailZoom": 13,
    "vectorTileLayerStyles": {
        "my_layer":{
            "fill": True,
            "weight": 1,
            "fillColor": 'green',
            "color": 'black',
            "fillOpacity":0.6,
            "opacity":0.6
        },
    }
}

vc = VectorTileLayer(url, "folium_layer_name", options)
m.add_child(vc)
m

Or with conditional styling

import folium
from folium_vectortilelayer import VectorTileLayer

m = folium.Map()
url = "https://free.tilehosting.com/data/v3/{z}/{x}/{y}.pbf?token=my_token"

options = '''{
  "layers": ["my_layer"],
  "vectorTileLayerStyles": {
    "my_layer": function(f) {
      if (f.type === 'parks') {
        return {
          "fill": true,
          "weight": 1,
          "fillColor": 'green',
          "color": 'black',
          "fillOpacity":0.6,
          "opacity":0.6
        };
      }

      if (f.type === 'water') {
        return {
          "fill": true,
          "weight": 1,
          "fillColor": 'purple',
          "color": 'black',
          "fillOpacity":0.6,
          "opacity":0.6
        };
      }
    }
  }
}'''

VectorTileLayer(url,"layer_name",options).add_to(m)
m

License

Distributed under the MIT License. See LICENSE for more information.

Contact

Benjamin Ramser - @imwithpanda - [e-mail]
Project Link: https://github.com/iwpnd/folium-vector