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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"[](https://colab.research.google.com/github/opengeos/solara-geemap/blob/main/notebooks/07_jrc.ipynb)"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"# %pip install -U geemap solara"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"import ee\n",
"import geemap\n",
"import ipywidgets as widgets\n",
"from IPython.display import display\n",
"import solara\n",
"\n",
"\n",
"class Map(geemap.Map):\n",
" def __init__(self, **kwargs):\n",
" super().__init__(**kwargs)\n",
" self.add_basemap(\"Esri.WorldImagery\")\n",
" self.add_ee_data()\n",
" self.add_buttons(add_header=True)\n",
"\n",
" def add_ee_data(self):\n",
"\n",
" dataset = ee.Image(\"JRC/GSW1_4/GlobalSurfaceWater\")\n",
" image = dataset.select([\"occurrence\"])\n",
" vis_params = {\n",
" \"min\": 0.0,\n",
" \"max\": 100.0,\n",
" \"palette\": [\"ffffff\", \"ffbbbb\", \"0000ff\"],\n",
" }\n",
" self.addLayer(image, vis_params, \"Occurrence\")\n",
" self.add_colorbar(\n",
" vis_params, label=\"Water occurrence (%)\", layer_name=\"Occurrence\"\n",
" )\n",
"\n",
" def add_buttons(self, position=\"topright\", **kwargs):\n",
" padding = \"0px 5px 0px 5px\"\n",
" widget = widgets.VBox(layout=widgets.Layout(padding=padding))\n",
" layout = widgets.Layout(width=\"auto\")\n",
" style = {\"description_width\": \"initial\"}\n",
" hist_btn = widgets.Button(description=\"Occurrence\", layout=layout)\n",
" bar_btn = widgets.Button(description=\"Monthly history\", layout=layout)\n",
" reset_btn = widgets.Button(description=\"Reset\", layout=layout)\n",
" scale = widgets.IntSlider(\n",
" min=30, max=1000, value=90, description=\"Scale\", layout=layout, style=style\n",
" )\n",
" month_slider = widgets.IntRangeSlider(\n",
" description=\"Months\",\n",
" value=[5, 10],\n",
" min=1,\n",
" max=12,\n",
" step=1,\n",
" layout=layout,\n",
" style=style,\n",
" )\n",
" widget.children = [\n",
" widgets.HBox([hist_btn, bar_btn, reset_btn]),\n",
" month_slider,\n",
" scale,\n",
" ]\n",
" self.add_widget(widget, position=position, **kwargs)\n",
" output = widgets.Output()\n",
" self.add_widget(output, position=\"bottomleft\", add_header=False)\n",
"\n",
" def hist_btn_click(b):\n",
" region = self.user_roi\n",
" if region is not None:\n",
" output.clear_output()\n",
" output.append_stdout(\"Computing histogram...\")\n",
" image = ee.Image(\"JRC/GSW1_4/GlobalSurfaceWater\").select([\"occurrence\"])\n",
" self.default_style = {\"cursor\": \"wait\"}\n",
" hist = geemap.image_histogram(\n",
" image,\n",
" region,\n",
" scale=scale.value,\n",
" height=350,\n",
" width=550,\n",
" x_label=\"Water Occurrence (%)\",\n",
" y_label=\"Pixel Count\",\n",
" layout_args={\n",
" \"title\": dict(x=0.5),\n",
" \"margin\": dict(l=0, r=0, t=10, b=0),\n",
" },\n",
" return_df=False,\n",
" )\n",
"\n",
" with output:\n",
" output.clear_output()\n",
" display(hist)\n",
" self.default_style = {\"cursor\": \"default\"}\n",
" else:\n",
" output.clear_output()\n",
" with output:\n",
" output.append_stdout(\"Please draw a region of interest first.\")\n",
"\n",
" hist_btn.on_click(hist_btn_click)\n",
"\n",
" def bar_btn_click(b):\n",
" region = self.user_roi\n",
" if region is not None:\n",
" self.default_style = {\"cursor\": \"wait\"}\n",
" output.clear_output()\n",
" output.append_stdout(\"Computing monthly history...\")\n",
" bar = geemap.jrc_hist_monthly_history(\n",
" region=region,\n",
" scale=scale.value,\n",
" height=350,\n",
" width=550,\n",
" layout_args={\n",
" \"title\": dict(x=0.5),\n",
" \"margin\": dict(l=0, r=0, t=10, b=0),\n",
" },\n",
" frequency=\"month\",\n",
" start_month=month_slider.value[0],\n",
" end_month=month_slider.value[1],\n",
" denominator=1e4,\n",
" y_label=\"Area (ha)\",\n",
" )\n",
"\n",
" with output:\n",
" output.clear_output()\n",
" display(bar)\n",
" self.default_style = {\"cursor\": \"default\"}\n",
" else:\n",
" output.clear_output()\n",
" with output:\n",
" output.append_stdout(\"Please draw a region of interest first.\")\n",
"\n",
" bar_btn.on_click(bar_btn_click)\n",
"\n",
" def reset_btn_click(b):\n",
" self._draw_control.clear()\n",
" output.clear_output()\n",
"\n",
" reset_btn.on_click(reset_btn_click)\n",
"\n",
"\n",
"@solara.component\n",
"def Page():\n",
" with solara.Column(style={\"min-width\": \"500px\"}):\n",
" Map.element(\n",
" center=[20, -0],\n",
" zoom=2,\n",
" height=\"750px\",\n",
" zoom_ctrl=False,\n",
" measure_ctrl=False,\n",
" )"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"Page()"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "geo",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.11.8"
}
},
"nbformat": 4,
"nbformat_minor": 2
}
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