[23] | 1 | #!/usr/bin/env python |
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| 2 | ############################################################################### |
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| 3 | # $Id: gdal2xyz.py 18215 2009-12-08 19:11:59Z rouault $ |
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| 4 | # |
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| 5 | # Project: GDAL |
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| 6 | # Purpose: Script to translate GDAL supported raster into XYZ ASCII |
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| 7 | # point stream. |
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| 8 | # Author: Frank Warmerdam, warmerdam@pobox.com |
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| 9 | # |
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| 10 | ############################################################################### |
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| 11 | # Copyright (c) 2002, Frank Warmerdam <warmerdam@pobox.com> |
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| 12 | # |
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| 13 | # Permission is hereby granted, free of charge, to any person obtaining a |
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| 14 | # copy of this software and associated documentation files (the "Software"), |
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| 15 | # to deal in the Software without restriction, including without limitation |
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| 16 | # the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 17 | # and/or sell copies of the Software, and to permit persons to whom the |
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| 18 | # Software is furnished to do so, subject to the following conditions: |
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| 19 | # |
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| 20 | # The above copyright notice and this permission notice shall be included |
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| 21 | # in all copies or substantial portions of the Software. |
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| 22 | # |
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| 23 | # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 24 | # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 25 | # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 26 | # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 27 | # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 28 | # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 29 | # DEALINGS IN THE SOFTWARE. |
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| 30 | ############################################################################### |
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| 31 | |
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| 32 | try: |
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| 33 | from osgeo import gdal |
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| 34 | except ImportError: |
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| 35 | import gdal |
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| 36 | |
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| 37 | import sys |
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| 38 | |
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| 39 | try: |
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| 40 | import numpy as Numeric |
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| 41 | except ImportError: |
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| 42 | import Numeric |
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| 43 | |
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| 44 | # ============================================================================= |
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| 45 | def Usage(): |
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| 46 | print('Usage: gdal2xyz.py [-skip factor] [-srcwin xoff yoff width height]') |
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| 47 | print(' [-band b] srcfile [dstfile]') |
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| 48 | print('') |
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| 49 | sys.exit( 1 ) |
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| 50 | |
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| 51 | # ============================================================================= |
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| 52 | # |
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| 53 | # Program mainline. |
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| 54 | # |
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| 55 | |
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| 56 | if __name__ == '__main__': |
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| 57 | |
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| 58 | srcwin = None |
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| 59 | skip = 1 |
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| 60 | srcfile = None |
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| 61 | dstfile = None |
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| 62 | band_nums = [] |
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| 63 | |
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| 64 | gdal.AllRegister() |
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| 65 | argv = gdal.GeneralCmdLineProcessor( sys.argv ) |
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| 66 | if argv is None: |
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| 67 | sys.exit( 0 ) |
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| 68 | |
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| 69 | # Parse command line arguments. |
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| 70 | i = 1 |
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| 71 | while i < len(argv): |
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| 72 | arg = argv[i] |
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| 73 | |
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| 74 | if arg == '-srcwin': |
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| 75 | srcwin = (int(argv[i+1]),int(argv[i+2]), |
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| 76 | int(argv[i+3]),int(argv[i+4])) |
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| 77 | i = i + 4 |
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| 78 | |
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| 79 | elif arg == '-skip': |
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| 80 | skip = int(argv[i+1]) |
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| 81 | i = i + 1 |
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| 82 | |
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| 83 | elif arg == '-band': |
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| 84 | band_nums.append( int(argv[i+1]) ) |
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| 85 | i = i + 1 |
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| 86 | |
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| 87 | elif arg[0] == '-': |
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| 88 | Usage() |
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| 89 | |
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| 90 | elif srcfile is None: |
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| 91 | srcfile = arg |
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| 92 | |
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| 93 | elif dstfile is None: |
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| 94 | dstfile = arg |
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| 95 | |
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| 96 | else: |
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| 97 | Usage() |
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| 98 | |
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| 99 | i = i + 1 |
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| 100 | |
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| 101 | if srcfile is None: |
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| 102 | Usage() |
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| 103 | |
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| 104 | if band_nums == []: band_nums = [1] |
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| 105 | # Open source file. |
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| 106 | srcds = gdal.Open( srcfile ) |
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| 107 | if srcds is None: |
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| 108 | print('Could not open %s.' % srcfile) |
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| 109 | sys.exit( 1 ) |
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| 110 | |
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| 111 | bands = [] |
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| 112 | for band_num in band_nums: |
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| 113 | band = srcds.GetRasterBand(band_num) |
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| 114 | if band is None: |
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| 115 | print('Could not get band %d' % band_num) |
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| 116 | sys.exit( 1 ) |
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| 117 | bands.append(band) |
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| 118 | |
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| 119 | gt = srcds.GetGeoTransform() |
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| 120 | |
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| 121 | # Collect information on all the source files. |
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| 122 | if srcwin is None: |
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| 123 | srcwin = (0,0,srcds.RasterXSize,srcds.RasterYSize) |
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| 124 | |
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| 125 | # Open the output file. |
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| 126 | if dstfile is not None: |
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| 127 | dst_fh = open(dstfile,'wt') |
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| 128 | else: |
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| 129 | dst_fh = sys.stdout |
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| 130 | |
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| 131 | band_format = ("%g " * len(bands)).rstrip() + '\n' |
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| 132 | |
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| 133 | # Setup an appropriate print format. |
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| 134 | if abs(gt[0]) < 180 and abs(gt[3]) < 180 \ |
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| 135 | and abs(srcds.RasterXSize * gt[1]) < 180 \ |
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| 136 | and abs(srcds.RasterYSize * gt[5]) < 180: |
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| 137 | format = '%.10g %.10g %s' |
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| 138 | else: |
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| 139 | format = '%.3f %.3f %s' |
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| 140 | |
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| 141 | # Loop emitting data. |
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| 142 | |
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| 143 | for y in range(srcwin[1],srcwin[1]+srcwin[3],skip): |
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| 144 | |
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| 145 | data = [] |
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| 146 | for band in bands: |
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| 147 | |
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| 148 | band_data = band.ReadAsArray( srcwin[0], y, srcwin[2], 1 ) |
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| 149 | band_data = Numeric.reshape( band_data, (srcwin[2],) ) |
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| 150 | data.append(band_data) |
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| 151 | |
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| 152 | for x_i in range(0,srcwin[2],skip): |
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| 153 | |
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| 154 | x = x_i + srcwin[0] |
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| 155 | |
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| 156 | geo_x = gt[0] + (x+0.5) * gt[1] + (y+0.5) * gt[2] |
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| 157 | geo_y = gt[3] + (x+0.5) * gt[4] + (y+0.5) * gt[5] |
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| 158 | |
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| 159 | x_i_data = [] |
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| 160 | for i in range(len(bands)): |
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| 161 | x_i_data.append(data[i][x_i]) |
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| 162 | |
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| 163 | band_str = band_format % tuple(x_i_data) |
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| 164 | |
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| 165 | line = format % (float(geo_x),float(geo_y), band_str) |
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| 166 | |
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| 167 | dst_fh.write( line ) |
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| 168 | |
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| 169 | |
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