Spaces:
Running
Running
| import streamlit as st | |
| import leafmap.foliumap as leafmap | |
| def app(): | |
| st.title("Using U.S. Census Data") | |
| st.markdown( | |
| """ | |
| This app is a demonstration of using the [U.S. Census Bureau](https://www.census.gov/) TIGERweb Web Map Service (WMS). A complete list of WMS layers can be found [here](https://tigerweb.geo.census.gov/tigerwebmain/TIGERweb_wms.html). | |
| """ | |
| ) | |
| if "first_index" not in st.session_state: | |
| st.session_state["first_index"] = 60 | |
| else: | |
| st.session_state["first_index"] = 0 | |
| row1_col1, row1_col2 = st.columns([3, 1]) | |
| width = 800 | |
| height = 600 | |
| census_dict = leafmap.get_census_dict() | |
| with row1_col2: | |
| wms = st.selectbox("Select a WMS", list(census_dict.keys()), index=11) | |
| layer = st.selectbox( | |
| "Select a layer", | |
| census_dict[wms]["layers"], | |
| index=st.session_state["first_index"], | |
| ) | |
| with row1_col1: | |
| m = leafmap.Map() | |
| m.add_census_data(wms, layer) | |
| m.to_streamlit(width, height) | |