Init commit

.gitignore

@@ -2,6 +2,7 @@
 __pycache__/
 *.py[cod]
 *$py.class
+*.html
 
 # C extensions
 *.so

Procfile

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+web: sh setup.sh && streamlit run app.py

app.py

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+import streamlit as st
+from multiapp import MultiApp
+from apps import home
+
+# st.set_page_config(layout="wide")
+
+
+apps = MultiApp()
+
+# Add all your application here
+
+apps.add_app("Home", home.app)
+
+# The main app
+apps.run()

apps/home.py

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+import streamlit as st
+import leafmap.foliumap as leafmap
+
+
+def app():
+    st.title("Home")
+
+    st.header("Introduction")
+    st.write(
+        "This web app demonstrates how to create interactive maps using streamlit and open-source mapping libraries."
+    )
+
+    st.markdown("Source code: <https://github.com/giswqs/streamlit-geospatial>")
+    st.markdown("Web app: <https://gishub.org/streamlit-geospatial>")
+
+    st.header("Example")
+
+    filepath = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/us_cities.csv"
+    m = leafmap.Map(tiles="stamentoner")
+    m.add_heatmap(
+        filepath,
+        latitude="latitude",
+        longitude="longitude",
+        value="pop_max",
+        name="Heat map",
+        radius=20,
+    )
+    m.to_streamlit(width=700, height=500)

multiapp.py

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+"""Frameworks for running multiple Streamlit applications as a single app.
+"""
+import streamlit as st
+
+# app_state = st.experimental_get_query_params()
+# app_state = {k: v[0] if isinstance(v, list) else v for k, v in app_state.items()} # fetch the first item in each query string as we don't have multiple values for each query string key in this example
+
+
+class MultiApp:
+    """Framework for combining multiple streamlit applications.
+    Usage:
+        def foo():
+            st.title("Hello Foo")
+        def bar():
+            st.title("Hello Bar")
+        app = MultiApp()
+        app.add_app("Foo", foo)
+        app.add_app("Bar", bar)
+        app.run()
+    It is also possible keep each application in a separate file.
+        import foo
+        import bar
+        app = MultiApp()
+        app.add_app("Foo", foo.app)
+        app.add_app("Bar", bar.app)
+        app.run()
+    """
+
+    def __init__(self):
+        self.apps = []
+
+    def add_app(self, title, func):
+        """Adds a new application.
+        Parameters
+        ----------
+        func:
+            the python function to render this app.
+        title:
+            title of the app. Appears in the dropdown in the sidebar.
+        """
+        self.apps.append({"title": title, "function": func})
+
+    def run(self):
+        app_state = st.experimental_get_query_params()
+        app_state = {
+            k: v[0] if isinstance(v, list) else v for k, v in app_state.items()
+        }  # fetch the first item in each query string as we don't have multiple values for each query string key in this example
+
+        # st.write('before', app_state)
+
+        titles = [a["title"] for a in self.apps]
+        functions = [a["function"] for a in self.apps]
+        default_radio = titles.index(app_state["page"]) if "page" in app_state else 0
+
+        st.sidebar.title("Navigation")
+
+        title = st.sidebar.radio("Go To", titles, index=default_radio, key="radio")
+
+        app_state["page"] = st.session_state.radio
+        # st.write('after', app_state)
+
+        st.experimental_set_query_params(**app_state)
+        functions[titles.index(title)]()

requirements.txt

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+geopandas
+keplergl
+streamlit
+streamlit-folium
+streamlit-keplergl
+git+git://github.com/giswqs/leafmap
+git+git://github.com/giswqs/geemap

setup.sh

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+mkdir -p ~/.streamlit/
+echo "\
+[server]\n\
+headless = true\n\
+port = $PORT\n\
+enableCORS = false\n\
+\n\
+" > ~/.streamlit/config.toml