{
 "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/90_pixel_inspector.ipynb)\n",
    "[![image](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/opengeos/leafmap/blob/master/docs/notebooks/90_pixel_inspector.ipynb)\n",
    "[![image](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/opengeos/leafmap/HEAD)\n",
    "\n",
    "## Interactive pixel inspector \n",
    "\n",
    "The interactive pixel inspector can be used to explore the pixel values of an image. It supports Cloud Optimized GeoTIFF (COG), STAC, and other raster data formats, either stored locally or on the cloud. The COG and STAC functionalities are powered by the [TiTiler](https://developmentseed.org/titiler/), while the local file support is powered by [localtileserver](https://github.com/banesullivan/localtileserver)."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "1",
   "metadata": {},
   "outputs": [],
   "source": [
    "# %pip install \"leafmap[raster]\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "2",
   "metadata": {},
   "outputs": [],
   "source": [
    "import leafmap\n",
    "import rasterio\n",
    "import rioxarray\n",
    "import xarray as xr"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "3",
   "metadata": {},
   "source": [
    "### COG"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "4",
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map()\n",
    "url = \"https://github.com/opengeos/data/releases/download/raster/Libya-2023-07-01.tif\"\n",
    "m.add_cog_layer(url, name=\"Libya\")\n",
    "m.add(\"inspector\")\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "5",
   "metadata": {},
   "source": [
    "### STAC"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "6",
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map()\n",
    "url = \"https://canada-spot-ortho.s3.amazonaws.com/canada_spot_orthoimages/canada_spot5_orthoimages/S5_2007/S5_11055_6057_20070622/S5_11055_6057_20070622.json\"\n",
    "m.add_stac_layer(url, bands=[\"B3\", \"B2\", \"B1\"], name=\"SPOT Image\")\n",
    "m.add(\"inspector\")\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "7",
   "metadata": {},
   "source": [
    "### Planetary Computer"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "8",
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map()\n",
    "collection = \"landsat-8-c2-l2\"\n",
    "item = \"LC08_L2SP_047027_20201204_02_T1\"\n",
    "m.add_stac_layer(\n",
    "    collection=collection,\n",
    "    item=item,\n",
    "    assets=\"SR_B7,SR_B5,SR_B4\",\n",
    "    name=\"Landsat Band-754\",\n",
    ")\n",
    "m.add(\"inspector\")\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "9",
   "metadata": {},
   "source": [
    "### Local raster"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "10",
   "metadata": {},
   "outputs": [],
   "source": [
    "url = \"https://opengeos.org/data/raster/landsat.tif\"\n",
    "satellite = leafmap.download_file(url, \"landsat.tif\", overwrite=True)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "11",
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map()\n",
    "m.add_raster(satellite, indexes=[4, 1, 2], vmin=0, vmax=120, layer_name=\"Landsat 7\")\n",
    "m.add(\"inspector\")\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "12",
   "metadata": {},
   "source": [
    "## In-memory raster\n",
    "\n",
    "### NumPy array"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "13",
   "metadata": {},
   "outputs": [],
   "source": [
    "dataset = rasterio.open(satellite)\n",
    "nir = dataset.read(4).astype(float)\n",
    "red = dataset.read(1).astype(float)\n",
    "ndvi = (nir - red) / (nir + red)\n",
    "ndvi_image = leafmap.array_to_image(ndvi, source=satellite)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "14",
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map()\n",
    "m.add_raster(satellite, indexes=[4, 1, 2], vmin=0, vmax=120, layer_name=\"Landsat 7\")\n",
    "m.add_raster(ndvi_image, colormap=\"Greens\", layer_name=\"NDVI\")\n",
    "m.add(\"inspector\")\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "15",
   "metadata": {},
   "source": [
    "### Xarray DataArray"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "16",
   "metadata": {},
   "outputs": [],
   "source": [
    "url = \"https://opengeos.org/data/raster/srtm90.tif\"\n",
    "dem = leafmap.download_file(url, \"srtm90.tif\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "17",
   "metadata": {},
   "outputs": [],
   "source": [
    "ds = rioxarray.open_rasterio(dem)\n",
    "ds"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "18",
   "metadata": {},
   "outputs": [],
   "source": [
    "array = ds.sel(band=1)\n",
    "masked_array = xr.where(array < 2000, 0, 1)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "19",
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map()\n",
    "m.add_raster(dem, colormap=\"terrain\", layer_name=\"DEM\")\n",
    "m.add_raster(masked_array, colormap=\"coolwarm\", layer_name=\"Classified DEM\")\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "20",
   "metadata": {},
   "source": [
    "## Split map"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "21",
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map(center=[37.6, -119], zoom=9)\n",
    "m.split_map(\n",
    "    dem,\n",
    "    masked_array,\n",
    "    left_args={\n",
    "        \"layer_name\": \"DEM\",\n",
    "        \"colormap\": \"terrain\",\n",
    "    },\n",
    "    right_args={\n",
    "        \"layer_name\": \"Classified DEM\",\n",
    "        \"colormap\": \"coolwarm\",\n",
    "    },\n",
    ")\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "22",
   "metadata": {},
   "source": [
    "![](https://i.imgur.com/2AduU8G.gif)"
   ]
  }
 ],
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