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| import datetime | |
| import ee | |
| import streamlit as st | |
| import geemap.foliumap as geemap | |
| st.set_page_config(layout="wide") | |
| st.sidebar.info( | |
| """ | |
| - Web App URL: <https://streamlit.gishub.org> | |
| - GitHub repository: <https://github.com/giswqs/streamlit-geospatial> | |
| """ | |
| ) | |
| st.sidebar.title("Contact") | |
| st.sidebar.info( | |
| """ | |
| Qiusheng Wu at [wetlands.io](https://wetlands.io) | [GitHub](https://github.com/giswqs) | [Twitter](https://twitter.com/giswqs) | [YouTube](https://www.youtube.com/c/QiushengWu) | [LinkedIn](https://www.linkedin.com/in/qiushengwu) | |
| """ | |
| ) | |
| st.title("Comparing Global Land Cover Maps") | |
| col1, col2 = st.columns([4, 1]) | |
| Map = geemap.Map() | |
| Map.add_basemap("ESA WorldCover 2020 S2 FCC") | |
| Map.add_basemap("ESA WorldCover 2020 S2 TCC") | |
| Map.add_basemap("HYBRID") | |
| esa = ee.ImageCollection("ESA/WorldCover/v100").first() | |
| esa_vis = {"bands": ["Map"]} | |
| esri = ee.ImageCollection( | |
| "projects/sat-io/open-datasets/landcover/ESRI_Global-LULC_10m" | |
| ).mosaic() | |
| esri_vis = { | |
| "min": 1, | |
| "max": 10, | |
| "palette": [ | |
| "#1A5BAB", | |
| "#358221", | |
| "#A7D282", | |
| "#87D19E", | |
| "#FFDB5C", | |
| "#EECFA8", | |
| "#ED022A", | |
| "#EDE9E4", | |
| "#F2FAFF", | |
| "#C8C8C8", | |
| ], | |
| } | |
| markdown = """ | |
| - [Dynamic World Land Cover](https://developers.google.com/earth-engine/datasets/catalog/GOOGLE_DYNAMICWORLD_V1?hl=en) | |
| - [ESA Global Land Cover](https://developers.google.com/earth-engine/datasets/catalog/ESA_WorldCover_v100) | |
| - [ESRI Global Land Cover](https://samapriya.github.io/awesome-gee-community-datasets/projects/esrilc2020) | |
| """ | |
| with col2: | |
| longitude = st.number_input("Longitude", -180.0, 180.0, -89.3998) | |
| latitude = st.number_input("Latitude", -90.0, 90.0, 43.0886) | |
| zoom = st.number_input("Zoom", 0, 20, 11) | |
| Map.setCenter(longitude, latitude, zoom) | |
| start = st.date_input("Start Date for Dynamic World", datetime.date(2020, 1, 1)) | |
| end = st.date_input("End Date for Dynamic World", datetime.date(2021, 1, 1)) | |
| start_date = start.strftime("%Y-%m-%d") | |
| end_date = end.strftime("%Y-%m-%d") | |
| region = ee.Geometry.BBox(-179, -89, 179, 89) | |
| dw = geemap.dynamic_world(region, start_date, end_date, return_type="hillshade") | |
| layers = { | |
| "Dynamic World": geemap.ee_tile_layer(dw, {}, "Dynamic World Land Cover"), | |
| "ESA Land Cover": geemap.ee_tile_layer(esa, esa_vis, "ESA Land Cover"), | |
| "ESRI Land Cover": geemap.ee_tile_layer(esri, esri_vis, "ESRI Land Cover"), | |
| } | |
| options = list(layers.keys()) | |
| left = st.selectbox("Select a left layer", options, index=1) | |
| right = st.selectbox("Select a right layer", options, index=0) | |
| left_layer = layers[left] | |
| right_layer = layers[right] | |
| Map.split_map(left_layer, right_layer) | |
| legend = st.selectbox("Select a legend", options, index=options.index(right)) | |
| if legend == "Dynamic World": | |
| Map.add_legend( | |
| title="Dynamic World Land Cover", | |
| builtin_legend="Dynamic_World", | |
| ) | |
| elif legend == "ESA Land Cover": | |
| Map.add_legend(title="ESA Land Cover", builtin_legend="ESA_WorldCover") | |
| elif legend == "ESRI Land Cover": | |
| Map.add_legend(title="ESRI Land Cover", builtin_legend="ESRI_LandCover") | |
| with st.expander("Data sources"): | |
| st.markdown(markdown) | |
| with col1: | |
| Map.to_streamlit(height=750) | |