rasterio reproject failure example

rasterio-reproject-failure.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "import rasterio\n",
    "import rasterio.warp\n",
    "import numpy as np\n",
    "import affine"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'1.0a8'"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "rasterio.__version__"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "def mk_test_file(dd, file_name):\n",
    "    (count, H, W) = dd.shape\n",
    "    params = dict(width=W,\n",
    "                  height=H,\n",
    "                  count=count,\n",
    "                  dtype='uint8',\n",
    "                  crs='EPSG:4326',\n",
    "                  transform=affine.Affine(25,0,0,\n",
    "                                          0,-25,0))\n",
    "    with rasterio.open(file_name, 'w', driver='HDF4Image', **params) as f_out:\n",
    "        f_out.write(dd)\n",
    "\n",
    "\n",
    "dd = np.zeros((3,100,100), dtype='uint8')\n",
    "dd.shape\n",
    "file_name=\"test-3-bands.hdf\"\n",
    "\n",
    "mk_test_file(dd, file_name)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "-rw-r--r--  1 kirill  staff  33612 24 May 10:53 test-3-bands.hdf\r\n"
     ]
    }
   ],
   "source": [
    "!ls -l test-*"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "ERROR:rasterio._gdal:CPLE_IllegalArg in Temporary destination dataset for _reproject(): GDALDataset::GetRasterBand(2) - Illegal band #\n",
      "\n",
      "ERROR:rasterio._gdal:CPLE_IllegalArg in panDstBands[0] = 2 ... out of range for dataset.\n"
     ]
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Warping first band succeeds\n",
      "OK\n",
      "Warping band 2 or higher fails\n"
     ]
    },
    {
     "ename": "CPLE_IllegalArgError",
     "evalue": "panDstBands[0] = 2 ... out of range for dataset.",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mCPLE_IllegalArgError\u001b[0m                      Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-5-bc5d2d4b6ff6>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m     12\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     13\u001b[0m     \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"Warping band 2 or higher fails\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 14\u001b[0;31m     \u001b[0mrasterio\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mwarp\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mreproject\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mrasterio\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mband\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mf\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;36m2\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mdst\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0mparams\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     15\u001b[0m     \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"This never runs\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m/Users/kirill/.local/anaconda3/envs/rio/lib/python3.6/site-packages/rasterio/env.py\u001b[0m in \u001b[0;36mwrapper\u001b[0;34m(*args, **kwds)\u001b[0m\n\u001b[1;32m    268\u001b[0m         \u001b[0;32mdef\u001b[0m \u001b[0mwrapper\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m*\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0mkwds\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    269\u001b[0m             \u001b[0;32mwith\u001b[0m \u001b[0mEnv\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 270\u001b[0;31m                 \u001b[0;32mreturn\u001b[0m \u001b[0mf\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m*\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0mkwds\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    271\u001b[0m         \u001b[0;32mreturn\u001b[0m \u001b[0mwrapper\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m/Users/kirill/.local/anaconda3/envs/rio/lib/python3.6/site-packages/rasterio/warp.py\u001b[0m in \u001b[0;36mreproject\u001b[0;34m(source, destination, src_transform, gcps, src_crs, src_nodata, dst_transform, dst_crs, dst_nodata, resampling, init_dest_nodata, **kwargs)\u001b[0m\n\u001b[1;32m    268\u001b[0m     _reproject(source, destination, src_transform, gcps, src_crs, src_nodata,\n\u001b[1;32m    269\u001b[0m                \u001b[0mdst_transform\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mdst_crs\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mdst_nodata\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mresampling\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 270\u001b[0;31m                init_dest_nodata, **kwargs)\n\u001b[0m\u001b[1;32m    271\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    272\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32mrasterio/_warp.pyx\u001b[0m in \u001b[0;36mrasterio._warp._reproject (rasterio/_warp.cpp:7877)\u001b[0;34m()\u001b[0m\n",
      "\u001b[0;32mrasterio/_err.pyx\u001b[0m in \u001b[0;36mrasterio._err.exc_wrap_int (rasterio/_err.c:2098)\u001b[0;34m()\u001b[0m\n",
      "\u001b[0;31mCPLE_IllegalArgError\u001b[0m: panDstBands[0] = 2 ... out of range for dataset."
     ]
    }
   ],
   "source": [
    "with rasterio.open(file_name, \"r\") as f:\n",
    "    dst = np.empty((1, f.height, f.width), dtype=f.dtypes[0])\n",
    "\n",
    "\n",
    "    params = dict(dst_crs=f.crs,\n",
    "                  dst_transform=affine.Affine(10,0,0,\n",
    "                                              0, -10, 0))\n",
    "\n",
    "    print(\"Warping first band succeeds\")\n",
    "    rasterio.warp.reproject(rasterio.band(f,1), dst, **params)\n",
    "    print(\"OK\")\n",
    "\n",
    "    print(\"Warping band 2 or higher fails\")\n",
    "    rasterio.warp.reproject(rasterio.band(f,2), dst, **params)\n",
    "    print(\"This never runs\")"
   ]
  }
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