Add no data files to rasters.ipynb

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  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "99c9350d",
   "metadata": {},
   "outputs": [],
   "source": [
    "import rasterio\n",
    "import glob\n",
    "import numpy as np\n",
    "from multiprocess import Pool\n",
    "from tqdm.auto import tqdm"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "c30f7907",
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     "execution_count": 10,
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   "source": [
    "input_raster_folder = '/data/Road extraction/ta 15/vivid tiles resample'\n",
    "rasters = glob.glob(input_raster_folder+'/*.tif')\n",
    "len(rasters)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "id": "81b2e688",
   "metadata": {},
   "outputs": [],
   "source": [
    "def add_msk(raster):\n",
    "# for raster in rasters:\n",
    "    src = rasterio.open(raster, mode=\"r+\")\n",
    "    src.write_mask(True)\n",
    "    src.read_masks(1).all()\n",
    "    src.close()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "57c08baa",
   "metadata": {},
   "outputs": [
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      "text/plain": [
       "  0%|          | 0/133 [00:00<?, ?it/s]"
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     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "with Pool() as p:\n",
    "    list(tqdm(p.imap(add_msk, rasters), total=len(rasters)))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "771a925d",
   "metadata": {},
   "outputs": [],
   "source": []
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