Streamlit component for deck.gl visualisation
Project description
streamlit-deckgl
Streamlit component for deck.gl visualisation with bi-directional transport for onClick events.
Installation instructions
pip install streamlit-deckgl
Usage
There is one component function st_deckgl
with function signature:
component_value=st_deckgl(deck, height=500, configuration=None, key="deck_gl", events=None, description=None)
Parameters
deck : pydeck.Deck instance
The pydeck map to render.
key : str, default "deck_gl"
The key for the component. This must be unique for each map in the app.
height : int, default 500
The height of the map in pixels.
events : list, default None
A dict of events to listen for. Can be one or more of:
- 'click'
- 'hover'
- 'drag'
description : dict, default None
A dictionary with additional description components to overlay on the map
The keys are the position which can be one of 'top-right','top-left','bottom-right','bottom-left'
The values are the html elements to place in each position
Example {'top-right':<div>This is a nice map</div>}
configuration : dict, default None
A dictionary of configuration options for the map.
Returns
component_value : dict
A dictionary containing the info dictionary of the event.
Example
import streamlit as st
import pydeck as pdk
import pandas as pd
from streamlit_deckgl import st_deckgl
st.write("## Example")
chart_data = pd.DataFrame(
np.random.randn(1000, 2) / [50, 50] + [37.76, -122.4], columns=["lat", "lon"]
)
r = pdk.Deck(
initial_view_state=pdk.ViewState(
latitude=37.76, longitude=-122.4, zoom=11, pitch=50, height=600
),
layers=[
pdk.Layer(
"HexagonLayer",
data=chart_data,
get_position="[lon, lat]",
radius=200,
elevation_scale=4,
elevation_range=[0, 1000],
pickable=True,
extruded=True,
),
pdk.Layer(
"ScatterplotLayer",
data=chart_data,
get_position="[lon, lat]",
get_color="[200, 30, 0, 160]",
get_radius=200,
),
],
tooltip={
"html": "<b>Temperature:</b> {value} °C",
"style": {"backgroundColor": "steelblue", "color": "white"},
},
)
value = st_deckgl(r,)
st.write(value)
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