1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
#!/usr/bin/env python3
# ******************************************************************************
#
# Name: gdalproximity
# Project: GDAL Python Interface
# Purpose: Application for computing raster proximity maps.
# Author: Frank Warmerdam, warmerdam@pobox.com
#
# ******************************************************************************
# Copyright (c) 2008, Frank Warmerdam
# Copyright (c) 2009-2011, Even Rouault <even dot rouault at spatialys.com>
# Copyright (c) 2021, Idan Miara <idan@miara.com>
#
# SPDX-License-Identifier: MIT
# ******************************************************************************
import sys
from typing import Optional, Sequence
from osgeo import gdal
from osgeo_utils.auxiliary.util import GetOutputDriverFor, enable_gdal_exceptions
def Usage(isError):
f = sys.stderr if isError else sys.stdout
print(
"""
Usage: gdal_proximity [--help] [--help-general]
<srcfile> <dstfile> [-srcband <n>] [-dstband <n>]
[-of <format>] [-co <name>=<value>]...
[-ot {Byte|UInt16|UInt32|Float32|etc}]
[-values <n>,<n>,<n>] [-distunits {PIXEL|GEO}]
[-maxdist <n>] [-nodata <n>] [-use_input_nodata {YES|NO}]
[-fixed-buf-val <n>] [-q] """,
file=f,
)
return 2 if isError else 0
@enable_gdal_exceptions
def main(argv=sys.argv):
driver_name = None
creation_options = []
alg_options = []
src_filename = None
src_band_n = 1
dst_filename = None
dst_band_n = 1
creation_type = "Float32"
quiet = False
argv = gdal.GeneralCmdLineProcessor(argv)
if argv is None:
return 0
# Parse command line arguments.
i = 1
while i < len(argv):
arg = argv[i]
if arg == "--help":
return Usage(isError=False)
elif arg == "-of" or arg == "-f":
i = i + 1
driver_name = argv[i]
elif arg == "-co":
i = i + 1
creation_options.append(argv[i])
elif arg == "-ot":
i = i + 1
creation_type = argv[i]
elif arg == "-maxdist":
i = i + 1
alg_options.append("MAXDIST=" + argv[i])
elif arg == "-values":
i = i + 1
alg_options.append("VALUES=" + argv[i])
elif arg == "-distunits":
i = i + 1
alg_options.append("DISTUNITS=" + argv[i])
elif arg == "-nodata":
i = i + 1
alg_options.append("NODATA=" + argv[i])
elif arg == "-use_input_nodata":
i = i + 1
alg_options.append("USE_INPUT_NODATA=" + argv[i])
elif arg == "-fixed-buf-val":
i = i + 1
alg_options.append("FIXED_BUF_VAL=" + argv[i])
elif arg == "-srcband":
i = i + 1
src_band_n = int(argv[i])
elif arg == "-dstband":
i = i + 1
dst_band_n = int(argv[i])
elif arg == "-q" or arg == "-quiet":
quiet = True
elif arg[0] == "-":
sys.stderr.write("Unrecognized option : %s\n" % argv[i])
return Usage(isError=True)
elif src_filename is None:
src_filename = argv[i]
elif dst_filename is None:
dst_filename = argv[i]
else:
return Usage(isError=True)
i = i + 1
if src_filename is None:
sys.stderr.write("Missing <srcfile>\n")
return Usage(isError=True)
if dst_filename is None:
sys.stderr.write("Missing <dstfile>\n")
return Usage(isError=True)
return gdal_proximity(
src_filename=src_filename,
src_band_n=src_band_n,
dst_filename=dst_filename,
dst_band_n=dst_band_n,
driver_name=driver_name,
creation_type=creation_type,
creation_options=creation_options,
alg_options=alg_options,
quiet=quiet,
)
def gdal_proximity(
src_filename: Optional[str] = None,
src_band_n: int = 1,
dst_filename: Optional[str] = None,
dst_band_n: int = 1,
driver_name: Optional[str] = None,
creation_type: str = "Float32",
creation_options: Optional[Sequence[str]] = None,
alg_options: Optional[Sequence[str]] = None,
quiet: bool = False,
):
# =============================================================================
# Open source file
# =============================================================================
creation_options = creation_options or []
alg_options = alg_options or []
src_ds = gdal.Open(src_filename)
if src_ds is None:
print("Unable to open %s" % src_filename)
return 1
srcband = src_ds.GetRasterBand(src_band_n)
# =============================================================================
# Try opening the destination file as an existing file.
# =============================================================================
try:
driver_name = gdal.IdentifyDriver(dst_filename)
if driver_name is not None:
dst_ds = gdal.Open(dst_filename, gdal.GA_Update)
dstband = dst_ds.GetRasterBand(dst_band_n)
else:
dst_ds = None
except Exception:
dst_ds = None
# =============================================================================
# Create output file.
# =============================================================================
if dst_ds is None:
if driver_name is None:
driver_name = GetOutputDriverFor(dst_filename)
drv = gdal.GetDriverByName(driver_name)
dst_ds = drv.Create(
dst_filename,
src_ds.RasterXSize,
src_ds.RasterYSize,
1,
gdal.GetDataTypeByName(creation_type),
creation_options,
)
dst_ds.SetGeoTransform(src_ds.GetGeoTransform())
dst_ds.SetProjection(src_ds.GetProjectionRef())
dstband = dst_ds.GetRasterBand(1)
# =============================================================================
# Invoke algorithm.
# =============================================================================
if quiet:
prog_func = None
else:
prog_func = gdal.TermProgress_nocb
gdal.ComputeProximity(srcband, dstband, alg_options, callback=prog_func)
srcband = None
dstband = None
src_ds = None
dst_ds = None
if __name__ == "__main__":
sys.exit(main(sys.argv))
|
