Add Maui

pages/01_morocco.py

@@ -130,6 +130,7 @@ def add_widgets(m):
                 right_layer.visible = True
                 footprint_layer = m.find_layer('Footprint')
                 footprint_layer.visible = False
+                checkbox.value = False
                 m.split_map(
                     left_layer=left_layer,
                     right_layer=right_layer,

pages/02_libya.py

@@ -130,6 +130,7 @@ def add_widgets(m):
                 right_layer.visible = True
                 footprint_layer = m.find_layer('Footprint')
                 footprint_layer.visible = False
+                checkbox.value = False
                 m.split_map(
                     left_layer=left_layer,
                     right_layer=right_layer,

pages/03_maui.py

@@ -0,0 +1,214 @@
+import os
+import leafmap
+import solara
+import ipywidgets as widgets
+import pandas as pd
+import geopandas as gpd
+import tempfile
+from shapely.geometry import Point
+
+event = 'Maui-Hawaii-fires-Aug-23'
+url = 'https://raw.githubusercontent.com/opengeos/maxar-open-data/master'
+repo = 'https://github.com/opengeos/maxar-open-data/blob/master/datasets'
+
+
+def get_datasets():
+    datasets = f'{url}/datasets.csv'
+    df = pd.read_csv(datasets)
+    return df
+
+
+def get_catalogs(name):
+    dataset = f'{url}/datasets/{name}.tsv'
+    basename = os.path.basename(dataset)
+    tempdir = tempfile.gettempdir()
+    tmp_dataset = os.path.join(tempdir, basename)
+    if os.path.exists(tmp_dataset):
+        dataset_df = pd.read_csv(tmp_dataset, sep='\t')
+    else:
+        dataset_df = pd.read_csv(dataset, sep='\t')
+        dataset_df.to_csv(tmp_dataset, sep='\t', index=False)
+    catalog_ids = dataset_df['catalog_id'].unique().tolist()
+    catalog_ids.sort()
+    return catalog_ids
+
+
+def add_widgets(m):
+    datasets = get_datasets()['dataset'].tolist()
+    setattr(m, 'zoom_to_layer', True)
+    style = {"description_width": "initial"}
+    padding = "0px 0px 0px 5px"
+    dataset = widgets.Dropdown(
+        options=datasets,
+        description='Event:',
+        value=event,
+        style=style,
+        layout=widgets.Layout(width="270px", padding=padding),
+    )
+
+    catalog_ids = get_catalogs(dataset.value)
+    setattr(m, 'catalog_ids', catalog_ids)
+
+    image = widgets.Dropdown(
+        value=None,
+        options=m.catalog_ids,
+        description='Image:',
+        style=style,
+        layout=widgets.Layout(width="270px", padding=padding),
+    )
+
+    checkbox = widgets.Checkbox(
+        value=True,
+        description='Footprints',
+        style=style,
+        layout=widgets.Layout(width="90px", padding="0px"),
+    )
+
+    split = widgets.Checkbox(
+        value=False,
+        description='Split map',
+        style=style,
+        layout=widgets.Layout(width="92px", padding=padding),
+    )
+
+    reset = widgets.Checkbox(
+        value=False,
+        description='Reset',
+        style=style,
+        layout=widgets.Layout(width="75px", padding='0px'),
+    )
+
+    def reset_map(change):
+        if change.new:
+            image.value = None
+            image.options = m.catalog_ids
+            m.layers = m.layers[:3]
+            m.zoom_to_layer = True
+            reset.value = False
+
+    reset.observe(reset_map, names='value')
+
+    def change_dataset(change):
+        default_geojson = f'{url}/datasets/{change.new}_union.geojson'
+        m.layers = m.layers[:2]
+        m.controls = m.controls[:-1]
+        basename = os.path.basename(default_geojson)
+        tempdir = tempfile.gettempdir()
+        tmp_geojson = os.path.join(tempdir, basename)
+        if os.path.exists(tmp_geojson):
+            default_geojson = tmp_geojson
+        else:
+            leafmap.download_file(default_geojson, tmp_geojson, quiet=True)
+        m.add_geojson(default_geojson, layer_name='Footprint', zoom_to_layer=True)
+        setattr(m, 'gdf', gpd.read_file(default_geojson))
+
+        image.options = get_catalogs(change.new)
+
+    dataset.observe(change_dataset, names='value')
+
+    def change_image(change):
+        if change.new:
+            mosaic = f'{url}/datasets/{dataset.value}/{image.value}.json'
+            m.add_stac_layer(mosaic, name=image.value, fit_bounds=m.zoom_to_layer)
+
+    image.observe(change_image, names='value')
+
+    def change_footprint(change):
+        geojson_layer = m.find_layer('Footprint')
+        if change.new:
+            geojson_layer.visible = True
+        else:
+            geojson_layer.visible = False
+
+    checkbox.observe(change_footprint, names='value')
+
+    def change_split(change):
+        if change.new:
+            if image.value is not None:
+                left_layer = m.find_layer(image.value)
+                right_layer = m.find_layer('Google Satellite')
+                right_layer.visible = True
+                footprint_layer = m.find_layer('Footprint')
+                footprint_layer.visible = False
+                checkbox.value = False
+                m.split_map(
+                    left_layer=left_layer,
+                    right_layer=right_layer,
+                    add_close_button=True,
+                    left_label=image.value,
+                    right_label='Google Satellite',
+                )
+                split.value = False
+            else:
+                left_layer = None
+
+    split.observe(change_split, names='value')
+
+    def handle_click(**kwargs):
+        if kwargs.get('type') == 'click':
+            latlon = kwargs.get('coordinates')
+            geometry = Point(latlon[::-1])
+            selected = m.gdf[m.gdf.intersects(geometry)]
+            setattr(m, 'zoom_to_layer', False)
+            if len(selected) > 0:
+                catalog_ids = selected['catalog_id'].values.tolist()
+
+                if len(catalog_ids) > 1:
+                    image.options = catalog_ids
+                image.value = catalog_ids[0]
+            else:
+                image.value = None
+
+    m.on_interaction(handle_click)
+
+    box = widgets.VBox([dataset, image, widgets.HBox([checkbox, split, reset])])
+    m.add_widget(box, position='topright', add_header=False)
+
+
+zoom = solara.reactive(2)
+center = solara.reactive((20, 0))
+
+
+class Map(leafmap.Map):
+    def __init__(self, **kwargs):
+        kwargs['toolbar_control'] = False
+        super().__init__(**kwargs)
+        basemap = {
+            "url": "https://mt1.google.com/vt/lyrs=s&x={x}&y={y}&z={z}",
+            "attribution": "Google",
+            "name": "Google Satellite",
+        }
+        self.add_tile_layer(**basemap, shown=False)
+        self.add_layer_manager(opened=False)
+        add_widgets(self)
+        default_geojson = f'{url}/datasets/{event}_union.geojson'
+        basename = os.path.basename(default_geojson)
+        tempdir = tempfile.gettempdir()
+        tmp_geojson = os.path.join(tempdir, basename)
+        if os.path.exists(tmp_geojson):
+            default_geojson = tmp_geojson
+        else:
+            leafmap.download_file(default_geojson, tmp_geojson, quiet=True)
+        self.add_geojson(default_geojson, layer_name='Footprint', zoom_to_layer=True)
+        setattr(self, 'gdf', gpd.read_file(default_geojson))
+
+
+@solara.component
+def Page():
+    with solara.Column(style={"min-width": "500px"}):
+        # solara components support reactive variables
+        # solara.SliderInt(label="Zoom level", value=zoom, min=1, max=20)
+        # using 3rd party widget library require wiring up the events manually
+        # using zoom.value and zoom.set
+        Map.element(  # type: ignore
+            zoom=zoom.value,
+            on_zoom=zoom.set,
+            center=center.value,
+            on_center=center.set,
+            scroll_wheel_zoom=True,
+            toolbar_ctrl=False,
+            data_ctrl=False,
+            height="780px",
+        )
+        solara.Text(f"Center: {center.value}")
+        solara.Text(f"Zoom: {zoom.value}")