examples/notebooks/49_colorbar.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "0",
   "metadata": {},
   "source": [
    "<a href=\"https://githubtocolab.com/gee-community/geemap/blob/master/examples/notebooks/49_colorbar.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open in Colab\"/></a>\n",
    "\n",
    "Uncomment the following line to install [geemap](https://geemap.org) if needed."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "1",
   "metadata": {},
   "outputs": [],
   "source": [
    "# !pip install geemap"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "2",
   "metadata": {},
   "source": [
    "# How to add a colorbar to the map\n",
    "\n",
    "## For ipyleaflet maps\n",
    "\n",
    "### Continuous colorbar"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "3",
   "metadata": {},
   "outputs": [],
   "source": [
    "import ee\n",
    "import geemap"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "4",
   "metadata": {},
   "outputs": [],
   "source": [
    "# geemap.update_package()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "5",
   "metadata": {},
   "outputs": [],
   "source": [
    "Map = geemap.Map()\n",
    "\n",
    "dem = ee.Image(\"USGS/SRTMGL1_003\")\n",
    "vis_params = {\n",
    "    \"min\": 0,\n",
    "    \"max\": 4000,\n",
    "    \"palette\": [\"006633\", \"E5FFCC\", \"662A00\", \"D8D8D8\", \"F5F5F5\"],\n",
    "}\n",
    "\n",
    "Map.addLayer(dem, vis_params, \"SRTM DEM\")\n",
    "\n",
    "colors = vis_params[\"palette\"]\n",
    "vmin = vis_params[\"min\"]\n",
    "vmax = vis_params[\"max\"]\n",
    "\n",
    "Map.add_colorbar_branca(colors=colors, vmin=vmin, vmax=vmax, layer_name=\"SRTM DEM\")\n",
    "\n",
    "# nlcd_2016 = ee.Image('USGS/NLCD/NLCD2016').select('landcover')\n",
    "# Map.addLayer(nlcd_2016, {}, \"NLCD\")\n",
    "# Map.add_legend(legend_title=\"NLCD\", builtin_legend=\"NLCD\", layer_name=\"NLCD\")\n",
    "\n",
    "Map"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "6",
   "metadata": {},
   "source": [
    "### Categorical colorbar"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "7",
   "metadata": {},
   "outputs": [],
   "source": [
    "Map = geemap.Map()\n",
    "\n",
    "dem = ee.Image(\"USGS/SRTMGL1_003\")\n",
    "vis_params = {\n",
    "    \"min\": 0,\n",
    "    \"max\": 4000,\n",
    "    \"palette\": [\"006633\", \"E5FFCC\", \"662A00\", \"D8D8D8\", \"F5F5F5\"],\n",
    "}\n",
    "\n",
    "Map.addLayer(dem, vis_params, \"SRTM DEM\")\n",
    "\n",
    "colors = vis_params[\"palette\"]\n",
    "vmin = vis_params[\"min\"]\n",
    "vmax = vis_params[\"max\"]\n",
    "\n",
    "Map.add_colorbar_branca(\n",
    "    colors=colors, vmin=vmin, vmax=vmax, categorical=True, step=4, layer_name=\"SRTM DEM\"\n",
    ")\n",
    "\n",
    "Map"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "8",
   "metadata": {},
   "source": [
    "## For folium maps\n",
    "\n",
    "### Continuous colorbar"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "9",
   "metadata": {},
   "outputs": [],
   "source": [
    "import ee\n",
    "import geemap.foliumap as geemap"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "10",
   "metadata": {},
   "outputs": [],
   "source": [
    "Map = geemap.Map()\n",
    "\n",
    "dem = ee.Image(\"USGS/SRTMGL1_003\")\n",
    "vis_params = {\n",
    "    \"min\": 0,\n",
    "    \"max\": 4000,\n",
    "    \"palette\": [\"006633\", \"E5FFCC\", \"662A00\", \"D8D8D8\", \"F5F5F5\"],\n",
    "}\n",
    "\n",
    "Map.addLayer(dem, vis_params, \"SRTM DEM\")\n",
    "\n",
    "colors = vis_params[\"palette\"]\n",
    "vmin = vis_params[\"min\"]\n",
    "vmax = vis_params[\"max\"]\n",
    "\n",
    "Map.add_colorbar(vis_params, label=\"Elevation (m)\")\n",
    "\n",
    "Map.addLayerControl()\n",
    "Map"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "11",
   "metadata": {},
   "source": [
    "### Categorical colorbar"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "12",
   "metadata": {},
   "outputs": [],
   "source": [
    "Map = geemap.Map()\n",
    "\n",
    "dem = ee.Image(\"USGS/SRTMGL1_003\")\n",
    "vis_params = {\n",
    "    \"min\": 0,\n",
    "    \"max\": 4000,\n",
    "    \"palette\": [\"006633\", \"E5FFCC\", \"662A00\", \"D8D8D8\", \"F5F5F5\"],\n",
    "}\n",
    "\n",
    "Map.addLayer(dem, vis_params, \"SRTM DEM\")\n",
    "\n",
    "colors = vis_params[\"palette\"]\n",
    "vmin = vis_params[\"min\"]\n",
    "vmax = vis_params[\"max\"]\n",
    "\n",
    "Map.add_colorbar(vis_params, categorical=True, step=4)\n",
    "\n",
    "Map.addLayerControl()\n",
    "Map"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "13",
   "metadata": {},
   "source": [
    "### Draggable legend"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "14",
   "metadata": {},
   "outputs": [],
   "source": [
    "Map = geemap.Map()\n",
    "\n",
    "legend_dict = {\n",
    "    \"11 Open Water\": \"466b9f\",\n",
    "    \"12 Perennial Ice/Snow\": \"d1def8\",\n",
    "    \"21 Developed, Open Space\": \"dec5c5\",\n",
    "    \"22 Developed, Low Intensity\": \"d99282\",\n",
    "    \"23 Developed, Medium Intensity\": \"eb0000\",\n",
    "    \"24 Developed High Intensity\": \"ab0000\",\n",
    "    \"31 Barren Land (Rock/Sand/Clay)\": \"b3ac9f\",\n",
    "    \"41 Deciduous Forest\": \"68ab5f\",\n",
    "    \"42 Evergreen Forest\": \"1c5f2c\",\n",
    "    \"43 Mixed Forest\": \"b5c58f\",\n",
    "    \"51 Dwarf Scrub\": \"af963c\",\n",
    "    \"52 Shrub/Scrub\": \"ccb879\",\n",
    "    \"71 Grassland/Herbaceous\": \"dfdfc2\",\n",
    "    \"72 Sedge/Herbaceous\": \"d1d182\",\n",
    "    \"73 Lichens\": \"a3cc51\",\n",
    "    \"74 Moss\": \"82ba9e\",\n",
    "    \"81 Pasture/Hay\": \"dcd939\",\n",
    "    \"82 Cultivated Crops\": \"ab6c28\",\n",
    "    \"90 Woody Wetlands\": \"b8d9eb\",\n",
    "    \"95 Emergent Herbaceous Wetlands\": \"6c9fb8\",\n",
    "}\n",
    "\n",
    "landcover = ee.Image(\"USGS/NLCD/NLCD2016\").select(\"landcover\")\n",
    "Map.addLayer(landcover, {}, \"NLCD Land Cover\")\n",
    "\n",
    "Map.add_legend(title=\"NLCD Land Cover Classification\", legend_dict=legend_dict)\n",
    "\n",
    "Map.addLayerControl()\n",
    "\n",
    "Map"
   ]
  }
 ],
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