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Communes_all_fr.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:76f327985f05bea7a21c286b5dc836cfa7af517b95a9804d72490144dabe6ba8
+size 2893361

app.py

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+import streamlit as st
+import pandas as pd
+import h3
+import pydeck as pdk
+import os
+
+st.set_page_config(page_title="France H3 3D", layout="wide", initial_sidebar_state="expanded")
+st.title("France 3D avec H3 – PyDeck + Streamlit")
+
+# --- SIDEBAR ---
+with st.sidebar:
+    st.header("Paramètres")
+    
+    COLONNE_VALEUR = st.selectbox(
+        'Colonne (hauteur + couleur)',
+        ['population', 'altitude_moyenne', 'superficie_km2', 'densite'],
+        index=0
+    )
+
+    RESOLUTION_H3 = st.slider('Résolution H3', 6, 9, 7)
+    
+    default_seuil = {'population': 1000, 'altitude_moyenne': 300, 'superficie_km2': 50, 'densite': 300}.get(COLONNE_VALEUR, 100)
+    SEUIL_MIN = st.number_input(f'Seuil minimum ({COLONNE_VALEUR})', value=default_seuil, step=100)
+
+    style_name = st.selectbox('Style', ['Dark Matter', 'Positron (Clair)', 'Voyager (Coloré)'], index=0)
+    MAP_STYLES = {
+        'Dark Matter': 'https://basemaps.cartocdn.com/gl/dark-matter-gl-style/style.json',
+        'Positron (Clair)': 'https://basemaps.cartocdn.com/gl/positron-gl-style/style.json',
+        'Voyager (Coloré)': 'https://basemaps.cartocdn.com/gl/voyager-gl-style/style.json'
+    }
+    MAP_STYLE = MAP_STYLES[style_name]
+
+# --- CHARGEMENT + CACHE ---
+@st.cache_data
+def load_data():
+    if not os.path.exists("Communes_all_fr.parquet"):
+        st.error("Fichier Communes_all_fr.parquet manquant !")
+        st.stop()
+    df = pd.read_parquet("Communes_all_fr.parquet")
+    df = df[df['superficie_km2'] < 800].copy()
+    df = df.dropna(subset=['latitude', 'longitude', 'population', COLONNE_VALEUR])
+    df = df[df['population'] > 0]
+    return df
+
+df = load_data()
+
+# --- TRAITEMENT H3 ---
+@st.cache_data
+def prepare_h3(df, res, col, seuil):
+    df = df.copy()
+    df['h3'] = df.apply(lambda r: h3.latlng_to_cell(r.latitude, r.longitude, res), axis=1)
+
+    agg = 'sum' if col == 'population' else 'mean'
+    grouped = df.groupby('h3').agg(
+        valeur=(col, agg),
+        population=('population', 'sum'),
+        ville=('nom_standard', 'first')
+    ).reset_index()
+
+    grouped = grouped[grouped.valeur >= seuil]
+    if grouped.empty:
+        return []
+
+    vmax = grouped.valeur.max()
+    vmin = grouped.valeur.min()
+    grouped['norm'] = 1.0 if vmax == vmin else (grouped.valeur - vmin) / (vmax - vmin)
+
+    data = []
+    for _, row in grouped.iterrows():
+        boundary = h3.cell_to_boundary(row.h3)
+        polygon = [[lon, lat] for lat, lon in boundary]
+        ratio = row['norm']
+        color = [255, int(255*(1-ratio)), 0, 230] if ratio > 0.5 else [0, int(255*ratio*2), 255, 230]
+        data.append({
+            "polygon": polygon,
+            "valeur": round(row.valeur, 2),
+            "ville": str(row.ville) if pd.notna(row.ville) else "Inconnue",
+            "population": int(row.population),
+            "color": color,
+            "elevation": row.valeur * (10 if col == "superficie_km2" else 1)
+        })
+    return data, vmax
+
+data, vmax = prepare_h3(df, RESOLUTION_H3, COLONNE_VALEUR, SEUIL_MIN)
+
+if not data:
+    st.warning("Aucun hexagone avec ce seuil – baisse-le !")
+    st.stop()
+
+# --- CARTE PYDECK SANS BOUCLE INFINIE ---
+layer = pdk.Layer(
+    "PolygonLayer",
+    data,
+    get_polygon="polygon",
+    get_fill_color="color",
+    get_elevation="elevation",
+    elevation_scale=0.06 if COLONNE_VALEUR == "population" else 1.2,
+    extruded=True,
+    wireframe=True,
+    pickable=False,           # ← DÉSACTIVE LES INTERACTIONS
+    auto_highlight=False,     # ← ÉVITE LES RERUNS
+    line_width_min_pixels=1
+)
+
+deck = pdk.Deck(
+    layers=[layer],
+    initial_view_state=pdk.ViewState(latitude=46.5, longitude=2.5, zoom=5.5, pitch=50),
+    map_style=MAP_STYLE
+)
+
+# LE PARAMÈTRE MAGIQUE QUI ÉVITE LA BOUCLE
+st.pydeck_chart(deck, use_container_width=True, on_select="ignore")
+
+# --- MÉTRIQUES ---
+col1, col2, col3 = st.columns(3)
+col1.metric("Hexagones", len(data))
+col2.metric("Valeur max", f"{vmax:,.0f}")
+col3.metric("Résolution H3", RESOLUTION_H3)
+
+st.success("Carte affichée sans boucle infinie – tout fonctionne !")

requirements.txt

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-altair
-pandas
-streamlit
+streamlit
+pandas
+polars
+pydeck
+numpy
+h3
+pyarrow