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r"""
Version for trame 1.x - https://github.com/Kitware/trame/blob/release-v1/examples/PlainPython/GeoMaps/UberPickupsNYC/app.py
Delta v1..v2 - https://github.com/Kitware/trame/commit/6f0882ab9060b0f1953915c2a7e93dbe996479e0
An example of showing geographic data
Installation requirements:
pip install trame trame-vuetify trame-vtk trame-deckgl trame-vega
"""
import os
import altair as alt
import numpy as np
import pandas as pd
import pydeck as pdk
from trame.app import get_server
from trame.ui.vuetify import SinglePageLayout
from trame.widgets import deckgl, html, vega, vuetify
# -----------------------------------------------------------------------------
# Trame setup
# -----------------------------------------------------------------------------
server = get_server(client_type="vue2")
state, ctrl = server.state, server.controller
# -----------------------------------------------------------------------------
# LOADING DATA
# -----------------------------------------------------------------------------
DATE_TIME = "date/time"
DATA_URL = (
"http://s3-us-west-2.amazonaws.com/streamlit-demo-data/uber-raw-data-sep14.csv.gz"
)
def lowercase(x):
return str(x).lower()
def load_data(nrows):
data = pd.read_csv(DATA_URL, nrows=nrows)
data.rename(lowercase, axis="columns", inplace=True)
data[DATE_TIME] = pd.to_datetime(data[DATE_TIME])
return data
data = load_data(100000)
# CREATING FUNCTION FOR MAPS
map_list = [
{
"id": "nyc",
"title": "All New York City",
"lat": np.average(data["lat"]),
"lon": np.average(data["lon"]),
"zoom": 11,
},
{
"id": "lga",
"title": "La Guardia Airport",
"lat": 40.7900,
"lon": -73.8700,
"zoom": 12,
},
{
"id": "jfk",
"title": "JFK Airport",
"lat": 40.6650,
"lon": -73.7821,
"zoom": 11,
},
{
"id": "nwk",
"title": "Newark Airport",
"lat": 40.7090,
"lon": -74.1805,
"zoom": 11,
},
]
def updateMap(data, id, lat, lon, zoom, **kwarg):
deck = pdk.Deck(
map_provider="mapbox",
map_style="mapbox://styles/mapbox/light-v9",
initial_view_state={
"latitude": lat,
"longitude": lon,
"zoom": zoom,
"pitch": 50,
},
layers=[
pdk.Layer(
"HexagonLayer",
data=data,
get_position=["lon", "lat"],
radius=100,
elevation_scale=4,
elevation_range=[0, 1000],
pickable=True,
extruded=True,
),
],
)
ctrl[f"{id}_update"](deck)
state[f"{id}Title"] = kwarg["title"]
@state.change("pickupHour")
def updateData(pickupHour, **kwargs):
state.chartTitle = f"All New York City from {pickupHour}:00 and {pickupHour + 1}:00"
# FILTERING DATA BY HOUR SELECTED
filtered_data = data[data[DATE_TIME].dt.hour == pickupHour]
for item in map_list:
updateMap(filtered_data, **item)
# FILTERING DATA FOR THE HISTOGRAM
filtered = filtered_data[
(data[DATE_TIME].dt.hour >= pickupHour)
& (data[DATE_TIME].dt.hour < (pickupHour + 1))
]
hist = np.histogram(filtered[DATE_TIME].dt.minute, bins=60, range=(0, 60))[0]
chart_data = pd.DataFrame({"minute": range(60), "pickups": hist})
# LAYING OUT THE HISTOGRAM SECTION
ctrl.hour_breakdown_update(
alt.Chart(chart_data)
.mark_area(
interpolate="step-after",
)
.properties(width="container", height=150)
.encode(
x=alt.X("minute:Q", scale=alt.Scale(nice=False)),
y=alt.Y("pickups:Q"),
tooltip=["minute", "pickups"],
)
.configure_mark(opacity=0.5, color="red")
)
# -----------------------------------------------------------------------------
# GUI Layout
# -----------------------------------------------------------------------------
dynamicTitle = "{{nycTitle}} from {{pickupHour}}:00 and {{pickupHour + 1}}:00"
mapProps = {
"classes": "elevation-5",
"mapboxApiKey": os.environ["MAPBOX_API_KEY"],
"style": "height: 50vh;",
}
with SinglePageLayout(server) as layout:
layout.title.set_text("NYC Uber Ridesharing Data")
with layout.content:
with vuetify.VContainer(fluid="true") as container:
html.Div(
"""Examining how Uber pickups vary over time in New York City's
and at its major regional airports.
By sliding the slider on the left you can view different slices
of time and explore different transportation trends.""",
classes="text-body-1",
)
vuetify.VSlider(
v_model=("pickupHour", 0),
classes="mt-4",
label="Select hour of pickup",
min=0,
max=23,
thumb_label=True,
)
with vuetify.VRow():
with vuetify.VCol(cols=4):
html.Div(dynamicTitle, classes="text-h5")
ctrl.nyc_update = deckgl.Deck(**mapProps).update
with vuetify.VCol(cols=8) as col:
with vuetify.VRow():
for title, name in [
("{{jfkTitle}}", "jfk"),
("{{lgaTitle}}", "lga"),
("{{nwkTitle}}", "nwk"),
]:
with vuetify.VCol(cols=4):
html.Div(title, classes="text-h5")
ctrl[f"{name}_update"] = deckgl.Deck(**mapProps).update
with html.Div(classes="text-center mt-6"):
ctrl.hour_breakdown_update = vega.Figure(style="width: 100%").update
# -----------------------------------------------------------------------------
# Start server
# -----------------------------------------------------------------------------
if __name__ == "__main__":
server.start()
|
