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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/@giswqs) | [LinkedIn](https://www.linkedin.com/in/giswqs)
"""
)
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)
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