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| 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 | |
| def add_widgets(m): | |
| style = {"description_width": "initial"} | |
| padding = "0px 0px 0px 5px" | |
| 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"), | |
| ) | |
| output = widgets.Output() | |
| def reset_map(change): | |
| if change.new: | |
| pass | |
| reset.observe(reset_map, 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: | |
| filename = selected.iloc[0]["Filename"] | |
| county = selected.iloc[0]["County"] | |
| year = filename.split("_")[-1][:4] | |
| with output: | |
| output.clear_output() | |
| output.append_stdout(f"County: {county} | Year: {year}") | |
| url = f"https://data.source.coop/giswqs/tn-imagery/imagery/{filename}" | |
| layer = m.find_layer("Selected Image") | |
| if layer is not None: | |
| m.remove(layer) | |
| m.default_style = {"cursor": "wait"} | |
| m.add_cog_layer(url, name="Selected Image", zoom_to_layer=False) | |
| m.default_style = {"cursor": "default"} | |
| else: | |
| with output: | |
| output.clear_output() | |
| output.append_stdout("No image found.") | |
| m.on_interaction(handle_click) | |
| box = widgets.VBox([widgets.HBox([checkbox, split, reset]), output]) | |
| m.add_widget(box, position="topright", add_header=False) | |
| zoom = solara.reactive(8) | |
| center = solara.reactive((35.64836915737426, -86.21246337890626)) | |
| class Map(leafmap.Map): | |
| def __init__(self, **kwargs): | |
| kwargs["toolbar_control"] = False | |
| kwargs["draw_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) | |
| wms_url = "https://tnmap.tn.gov/arcgis/services/BASEMAPS/IMAGERY_WEB_MERCATOR/MapServer/WMSServer" | |
| self.add_wms_layer(wms_url, layers="0", name="TDOT Imagery", shown=True) | |
| self.add_layer_manager(opened=False) | |
| # add_widgets(self) | |
| geojson = "https://github.com/opengeos/datasets/releases/download/vector/TN_Counties.geojson" | |
| style = {"color": "#3388ff", "opacity": 1, "weight": 2, "fillOpacity": 0} | |
| self.add_geojson( | |
| geojson, | |
| layer_name="TN Counties", | |
| style=style, | |
| zoom_to_layer=False, | |
| info_mode=None, | |
| ) | |
| gdf = gpd.read_file(geojson) | |
| setattr(self, "gdf", gdf) | |
| add_widgets(self) | |
| 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}") | |