mcd19a2 v2.ipynb

mcd19a2 v2.ipynb

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      "metadata": {
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      "cell_type": "code",
      "source": "import ee\nimport geemap\nimport os",
      "execution_count": 1,
      "outputs": []
    },
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      "metadata": {
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      "cell_type": "code",
      "source": "Map = geemap.Map()\nMap",
      "execution_count": 2,
      "outputs": [
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          "output_type": "display_data",
          "data": {
            "text/plain": "Map(center=[40, -100], controls=(WidgetControl(options=['position'], widget=HBox(children=(ToggleButton(value=…",
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      "cell_type": "code",
      "source": "feature = Map.draw_last_feature\nroi = feature.geometry()",
      "execution_count": 3,
      "outputs": []
    },
    {
      "metadata": {
        "trusted": true
      },
      "cell_type": "code",
      "source": "collection = ee.ImageCollection('MODIS/006/MCD19A2_GRANULES') \\\n    .filterDate('2003-01-01', '2003-01-02') \\\n    .filterBounds(roi) \\\n    .select('Optical_Depth_047')",
      "execution_count": 4,
      "outputs": []
    },
    {
      "metadata": {
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      "cell_type": "code",
      "source": "image = collection.first()",
      "execution_count": 5,
      "outputs": []
    },
    {
      "metadata": {
        "trusted": true
      },
      "cell_type": "code",
      "source": "geemap.image_props(image).getInfo()",
      "execution_count": 6,
      "outputs": [
        {
          "output_type": "execute_result",
          "execution_count": 6,
          "data": {
            "text/plain": "{'ALGORITHMPACKAGENAME': 'MOD_PR19',\n 'ALGORITHMPACKAGEVERSION': '2.0',\n 'DESCRREVISION': '6.1',\n 'IMAGE_DATE': '2003-01-01',\n 'LOCALVERSIONID': 'SCF V6.0.32',\n 'NOMINAL_SCALE': 926.6254330554174,\n 'PGEVERSION': '6.0.35',\n 'PRODUCTIONDATETIME': 1516294681000,\n 'SATELLITE': 'A',\n 'system:asset_size': '0.024842 MB',\n 'system:band_names': ['Optical_Depth_047'],\n 'system:id': 'MODIS/006/MCD19A2_GRANULES/MCD19A2_A2003001_h27v04_006_2018018165801_01',\n 'system:index': 'MCD19A2_A2003001_h27v04_006_2018018165801_01',\n 'system:time_end': '2003-01-01 01:30:00',\n 'system:time_start': '2003-01-01 01:30:00',\n 'system:version': 1557705483290787}"
          },
          "metadata": {}
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    },
    {
      "metadata": {
        "trusted": true
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      "cell_type": "code",
      "source": "collection.size().getInfo()",
      "execution_count": 7,
      "outputs": [
        {
          "output_type": "execute_result",
          "execution_count": 7,
          "data": {
            "text/plain": "27"
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          "metadata": {}
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      ]
    },
    {
      "metadata": {
        "trusted": true
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      "cell_type": "code",
      "source": "mosaic = collection.mosaic()",
      "execution_count": 8,
      "outputs": []
    },
    {
      "metadata": {
        "trusted": true
      },
      "cell_type": "code",
      "source": "geemap.image_stats(mosaic, region=roi).getInfo()",
      "execution_count": 9,
      "outputs": [
        {
          "output_type": "execute_result",
          "execution_count": 9,
          "data": {
            "text/plain": "{'max': {'Optical_Depth_047': 469},\n 'mean': {'Optical_Depth_047': 129.04531297096352},\n 'min': {'Optical_Depth_047': 0},\n 'std': {'Optical_Depth_047': 97.7659827175375},\n 'sum': {'Optical_Depth_047': 5036.815686274509}}"
          },
          "metadata": {}
        }
      ]
    },
    {
      "metadata": {
        "trusted": true
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      "cell_type": "code",
      "source": "Map.addLayer(mosaic, {'min': 0, 'max': 500, 'palette': ['blue', 'red']}, 'mosaic')",
      "execution_count": 10,
      "outputs": []
    },
    {
      "metadata": {
        "trusted": true
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      "cell_type": "code",
      "source": "Map",
      "execution_count": 11,
      "outputs": [
        {
          "output_type": "display_data",
          "data": {
            "text/plain": "Map(bottom=3401.0, center=[39.16414104768742, -225.02197265625003], controls=(WidgetControl(options=['position…",
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      ]
    },
    {
      "metadata": {
        "trusted": true
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      "cell_type": "code",
      "source": "image.projection().getInfo()",
      "execution_count": 12,
      "outputs": [
        {
          "output_type": "execute_result",
          "execution_count": 12,
          "data": {
            "text/plain": "{'type': 'Projection',\n 'crs': 'SR-ORG:6974',\n 'transform': [926.6254330558345,\n  0,\n  10007554.677,\n  0,\n  -926.6254330550003,\n  5559752.598333]}"
          },
          "metadata": {}
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      ]
    },
    {
      "metadata": {
        "trusted": true
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      "cell_type": "code",
      "source": "reproject = mosaic.reproject('EPSG:4326', None, 1000)",
      "execution_count": 13,
      "outputs": []
    },
    {
      "metadata": {
        "trusted": true
      },
      "cell_type": "code",
      "source": "reproject.projection().getInfo()",
      "execution_count": 14,
      "outputs": [
        {
          "output_type": "execute_result",
          "execution_count": 14,
          "data": {
            "text/plain": "{'type': 'Projection',\n 'crs': 'EPSG:4326',\n 'transform': [0.008983152841195215, 0, 0, 0, -0.008983152841195215, 0]}"
          },
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      "cell_type": "code",
      "source": "Map.addLayer(reproject, {'min': 0, 'max': 500, 'palette': ['blue', 'red']}, 'reproject')",
      "execution_count": 15,
      "outputs": []
    },
    {
      "metadata": {
        "trusted": true
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      "cell_type": "code",
      "source": "out_dir = os.path.join(os.path.expanduser('~'), 'Downloads')",
      "execution_count": 16,
      "outputs": []
    },
    {
      "metadata": {
        "trusted": true
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      "cell_type": "code",
      "source": "out_file = os.path.join(out_dir, 'modis.tif')",
      "execution_count": 17,
      "outputs": []
    },
    {
      "metadata": {
        "trusted": true
      },
      "cell_type": "code",
      "source": "geemap.ee_export_image(reproject, out_file, region=roi, scale=1000)",
      "execution_count": 18,
      "outputs": [
        {
          "output_type": "stream",
          "text": "Generating URL ...\nDownloading data from https://earthengine.googleapis.com/v1alpha/projects/earthengine-legacy/thumbnails/9dd272782e5e21d10db413e1ff68b03d-ef48bb4814f8ded9c5ea839312781622:getPixels\nPlease wait ...\nData downloaded to /home/qiusheng/Downloads/modis.tif\n",
          "name": "stdout"
        }
      ]
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      "execution_count": null,
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