{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "0",
   "metadata": {},
   "source": [
    "[![image](https://jupyterlite.rtfd.io/en/latest/_static/badge.svg)](https://demo.leafmap.org/lab/index.html?path=notebooks/23_colormaps.ipynb)\n",
    "[![image](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/opengeos/leafmap/blob/master/docs/notebooks/23_colormaps.ipynb)\n",
    "[![image](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/opengeos/leafmap/HEAD)\n",
    "\n",
    "**Creating colormaps with a single line of code**\n",
    "\n",
    "Uncomment the following line to install [leafmap](https://leafmap.org) if needed."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "1",
   "metadata": {},
   "outputs": [],
   "source": [
    "# !pip install leafmap"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "2",
   "metadata": {},
   "source": [
    "This notebook requires the ipyleaflet plotting backend. Folium is not supported."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "3",
   "metadata": {},
   "outputs": [],
   "source": [
    "from leafmap import leafmap\n",
    "import leafmap.colormaps as cm"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "4",
   "metadata": {},
   "source": [
    "Color palette for DEM data."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "5",
   "metadata": {},
   "outputs": [],
   "source": [
    "cm.palettes.dem"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "6",
   "metadata": {},
   "source": [
    "Show the DEM palette."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "7",
   "metadata": {},
   "outputs": [],
   "source": [
    "cm.plot_colormap(colors=cm.palettes.dem, axis_off=True)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "8",
   "metadata": {},
   "source": [
    "Color palette for NDVI data."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "9",
   "metadata": {},
   "outputs": [],
   "source": [
    "cm.palettes.ndvi"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "10",
   "metadata": {},
   "source": [
    "Show the NDVI palette."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "11",
   "metadata": {},
   "outputs": [],
   "source": [
    "cm.plot_colormap(colors=cm.palettes.ndvi)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "12",
   "metadata": {},
   "source": [
    "Specify the number of classes for a palette."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "13",
   "metadata": {},
   "outputs": [],
   "source": [
    "cm.get_palette(\"terrain\", n_class=8)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "14",
   "metadata": {},
   "source": [
    "Show the terrain palette with 8 classes."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "15",
   "metadata": {},
   "outputs": [],
   "source": [
    "cm.plot_colormap(colors=cm.get_palette(\"terrain\", n_class=8))"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "16",
   "metadata": {},
   "source": [
    "Create a palette with custom colors, label, and font size."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "17",
   "metadata": {},
   "outputs": [],
   "source": [
    "cm.plot_colormap(colors=[\"red\", \"green\", \"blue\"], label=\"Temperature\", font_size=12)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "18",
   "metadata": {},
   "source": [
    "Create a discrete color palette."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "19",
   "metadata": {},
   "outputs": [],
   "source": [
    "cm.plot_colormap(\n",
    "    colors=[\"red\", \"green\", \"blue\"], discrete=True, label=\"Temperature\", font_size=12\n",
    ")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "20",
   "metadata": {},
   "source": [
    "Specify the width and height for the palette."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "21",
   "metadata": {},
   "outputs": [],
   "source": [
    "cm.plot_colormap(\n",
    "    \"terrain\",\n",
    "    label=\"Elevation\",\n",
    "    width=8.0,\n",
    "    height=0.4,\n",
    "    orientation=\"horizontal\",\n",
    "    vmin=0,\n",
    "    vmax=1000,\n",
    ")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "22",
   "metadata": {},
   "source": [
    "Change the orentation of the colormap to be vertical."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "23",
   "metadata": {},
   "outputs": [],
   "source": [
    "cm.plot_colormap(\n",
    "    \"terrain\",\n",
    "    label=\"Elevation\",\n",
    "    width=0.4,\n",
    "    height=4,\n",
    "    orientation=\"vertical\",\n",
    "    vmin=0,\n",
    "    vmax=1000,\n",
    ")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "24",
   "metadata": {},
   "source": [
    "Add a horizontal colorbar to an interactive map."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "25",
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map()\n",
    "m.add_basemap(\"OpenTopoMap\")\n",
    "m.add_colormap(\n",
    "    \"terrain\",\n",
    "    label=\"Elevation\",\n",
    "    width=8.0,\n",
    "    height=0.4,\n",
    "    orientation=\"horizontal\",\n",
    "    vmin=0,\n",
    "    vmax=4000,\n",
    ")\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "26",
   "metadata": {},
   "source": [
    "![](https://i.imgur.com/tuB728Y.png)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "27",
   "metadata": {},
   "source": [
    "Add a vertical colorbar to an interactive map."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "28",
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map()\n",
    "m.add_basemap(\"OpenTopoMap\")\n",
    "m.add_colormap(\n",
    "    \"terrain\",\n",
    "    label=\"Elevation\",\n",
    "    width=0.4,\n",
    "    height=4,\n",
    "    orientation=\"vertical\",\n",
    "    vmin=0,\n",
    "    vmax=4000,\n",
    ")\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "29",
   "metadata": {},
   "source": [
    "Show all available colormaps."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "30",
   "metadata": {},
   "outputs": [],
   "source": [
    "cm.plot_colormaps(width=12, height=0.4)"
   ]
  }
 ],
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  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
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}