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