Create app.py

app.py

@@ -0,0 +1,76 @@
+import streamlit as st
+import pandas as pd
+import leafmap.foliumap as leafmap
+
+st.set_page_config(layout="wide")
+
+url = 'https://giswqs.github.io/maxar-open-data'
+repo = 'https://github.com/giswqs/maxar-open-data/blob/master/datasets'
+m = leafmap.Map()
+
+
+@st.cache
+def get_datasets():
+    datasets = f'{url}/datasets.csv'
+    df = pd.read_csv(datasets)
+    return df
+
+
+@st.cache
+def get_catalogs(name):
+    dataset = f'{url}/datasets/{name}.tsv'
+
+    dataset_df = pd.read_csv(dataset, sep='\t')
+    catalog_ids = dataset_df['catalog_id'].unique().tolist()
+    return catalog_ids
+
+
+st.title('Visualizing Maxar Open Data')
+
+col1, col2 = st.columns([1, 4])
+
+with col1:
+    default = 'Kahramanmaras-turkey-earthquake-23'
+    datasets = get_datasets()['dataset'].tolist()
+    dataset = st.selectbox('Select a dataset', datasets, index=datasets.index(default))
+    catalog = st.selectbox('Select a COG mosaic', get_catalogs(dataset))
+    geojson = f'{url}/datasets/{dataset}.geojson'
+    mosaic = f'{url}/datasets/{dataset}/{catalog}.json'
+    tsv = f'{repo}/{dataset}/{catalog}.tsv'
+    st.markdown(f'View metadata: [{catalog}.tsv]({tsv})')
+
+    with st.expander("Python code snippets"):
+        markdown = f"""
+import leafmap.foliumap as leafmap
+m = leafmap.Map()
+geojson = '{geojson}'
+mosaic = '{mosaic}'
+m.add_geojson(geojson, layer_name='{dataset}', info_mode='on_click')
+m.add_stac_layer(mosaic, name='{catalog}')
+m
+        """
+        st.code(markdown)
+
+
+    style = {
+        'weight': 1,
+        'fillOpacity': 0
+    }
+    m.add_geojson(geojson, layer_name=dataset, style=style, info_mode='on_click')
+    m.add_stac_layer(mosaic, name=catalog)
+
+    st.info('About')
+    markdown = f"""
+    - [Web App Source Code](https://github.com/giswqs/maxar-open-data/blob/master/streamlit_app.py)
+    - [GitHub Repo](https://github.com/giswqs/maxar-open-data)
+    - [Notebook Example](https://github.com/giswqs/maxar-open-data/blob/master/examples/maxar_open_data.ipynb)
+    - [Maxar Open Data Program](https://www.maxar.com/open-data)
+    - [Maxar Open Data on AWS](https://registry.opendata.aws/maxar-open-data/)
+    - [Maxar Open Data on STAC Index](https://stacindex.org/catalogs/maxar-open-data-catalog-ard-format#/)
+    - [Maxar Open Data on STAC Browser](https://radiantearth.github.io/stac-browser/#/external/maxar-opendata.s3.amazonaws.com/events/catalog.json?.language=en)
+    - Contact: [Qiusheng Wu](https://github.com/giswqs)
+    """
+    st.markdown(markdown)
+
+with col2:
+    m.to_streamlit(height=780)