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
|
#!/usr/bin/python
import sys, os, tempfile
import gdal, osr
from gdalconst import *
try:
import numpy as Numeric
Numeric.arrayrange = Numeric.arange
except ImportError:
import Numeric
from argparse import ArgumentParser
parser = ArgumentParser( description = "Build an index file from a mapset." )
parser.add_argument( 'files', metavar='file', nargs='+'
, help = 'A mapset tile' )
parser.add_argument( 'index', metavar='index'
, help = 'The destination index' )
parser.add_argument('-q', '--quiet', action='store_true', help='Be quiet')
parser.add_argument('-d', '--debug', action='store_true', help='Debug')
args = parser.parse_args()
progress = None
if not args.quiet:
try:
progress = gdal.TermProgress_nocb
except:
progress = gdal.TermProgress
# Ensure that GeoTiff is supported
format = 'GTiff'
dst_driver = gdal.GetDriverByName(format)
if dst_driver is None:
sys.stderr.write('"%s" driver not registered.\n' % format)
sys.exit(1)
def debug(msg):
if args.debug:
sys.stderr.write(msg)
def temptif():
(h, f) = tempfile.mkstemp(suffix = '.tif', dir = tmpdir)
debug( 'Creating temporary file "%s"\n' % f )
os.close(h)
return f
# Expand a palette into RBA. This code is mostly taken from pct2rgb(1).
def expand_rgba( src_filename ):
src_ds = gdal.Open( src_filename )
if src_ds is None:
sys.stderr.write('Unable to open "%s".\n' % src_filename)
sys.exit(1)
if src_ds.RasterCount != 1:
return src_filename
out_bands = 4 # RGBA
src_band = src_ds.GetRasterBand(1)
ct = src_band.GetRasterColorTable()
if ct is None:
return src_filename
n = 256
lookup = [ Numeric.arrayrange(n)
, Numeric.arrayrange(n)
, Numeric.arrayrange(n)
, Numeric.ones(n)*(n-1) ]
for i in range(min(n,ct.GetCount())):
entry = ct.GetColorEntry(i)
for c in range(4):
lookup[c][i] = entry[c]
dst_filename = temptif()
dst_ds = gdal.GetDriverByName(format).Create(
dst_filename,
src_ds.RasterXSize, src_ds.RasterYSize,
out_bands
)
dst_ds.SetProjection( src_ds.GetProjection() )
dst_ds.SetGeoTransform( src_ds.GetGeoTransform() )
if src_ds.GetGCPCount() > 0:
dst_ds.SetGCPs( src_ds.GetGCPs(), src_ds.GetGCPProjection() )
progress( 0.0 )
for iY in range(src_ds.RasterYSize):
src_data = src_band.ReadAsArray(0,iY,src_ds.RasterXSize,1)
for iBand in range(out_bands):
band_lookup = lookup[iBand]
dst_data = Numeric.take(band_lookup,src_data)
dst_ds.GetRasterBand(iBand+1).WriteArray(dst_data,0,iY)
progress( (iY+1.0) / src_ds.RasterYSize )
dst_ds = None
return dst_filename
# Reduce (and reproject if necessary) the given map.
def reduce_map( src_filename ):
src_ds = gdal.Open( src_filename )
if src_ds is None:
sys.stderr.write('Unable to open "%s".\n' % src_filename)
sys.exit(1)
src_prj = src_ds.GetProjection()
dst_prj = osr.SpatialReference()
dst_prj.ImportFromEPSG ( 3067 )
tx = osr.CoordinateTransformation ( src_prj, src_prj )
src_geo = src_ds.GetGeoTransform();
(ulx, uly, ulz ) = tx.TransformPoint( src_geo[0], src_geo[3])
(lrx, lry, lrz ) = tx.TransformPoint( src_geo[0] + src_geo[1]*src_ds.RasterXSize,
src_geo[3] + src_geo[5]*src_ds.RasterYSize )
res = 64; # TODO: should be computed
(w, h) = ( int((lrx - ulx)/(src_geo[1]*res)) , int((lry - uly)/(src_geo[5]*res)) )
print (w,h);
dst_filename = '/tmp/test.tiff' #temptif()
dst_ds = gdal.GetDriverByName(format).Create( dst_filename, w, h, src_ds.RasterCount )
dst_geo = ( ulx, src_geo[1]*res, src_geo[2], uly, src_geo[4], src_geo[5]*res )
dst_ds.SetGeoTransform( dst_geo )
dst_ds.SetProjection ( dst_prj.ExportToWkt() )
res = gdal.ReprojectImage( src_ds, dst_ds, src_prj.ExportToWkt(),
dst_prj.ExportToWkt(), GRA_Bilinear, 0, 0.0, progress )
if not res:
sys.stderr.write('Unable to open "%s".\n' % src_filename)
sys.exit(1)
dst_ds = None
return dst_filename
tmpdir = tempfile.mkdtemp()
debug( 'Temporary working directory: "%s".\n' % tmpdir )
for src_filename in args.files:
expanded = expand_rgba ( src_filename )
reduced = reduce_map ( expanded )
sys.exit(1)
src_filename = '/tmp/UV512_RVK_25.tiff'
src_proj = osr.SpatialReference()
src_proj.SetFromUserInput('epsg:3067')
# http://jgomezdans.github.io/gdal_notes/reprojection.html
src_filename = '/tmp/UV512_RVK_25.tiff'
src_ds = gdal.Open( src_filename )
if src_ds is None:
sys.stderr.write('Unable to open "%s".\n' % src_filename)
sys.exit(1)
gtiff_driver = gdal.GetDriverByName( 'GTiff' )
tif_ds = gtiff_driver.Create( '/tmp/zap.tiff', 300, 150, 4, GDT_Byte)
#tx = osr.CoordinateTransformation ( src_ds.GetProjection(), src_ds.GetProjection() )
geo_t = src_ds.GetGeoTransform ()
x_size = src_ds.RasterXSize # Raster xsize
y_size = src_ds.RasterYSize # Raster ysize
# Work out the boundaries of the new dataset in the target projection
(ulx, uly, ulz ) = tx.TransformPoint( geo_t[0], geo_t[3])
(lrx, lry, lrz ) = tx.TransformPoint( geo_t[0] + geo_t[1]*x_size, \
geo_t[3] + geo_t[5]*y_size )
new_geo = ( ulx, 147, geo_t[2], uly, geo_t[4], -147 )
tif_ds.SetGeoTransform( new_geo )
tif_ds.SetProjection ( osng.ExportToWkt() )
gdal.ReprojectImage(src_ds, tif_ds, wgs84.ExportToWkt(), osng.ExportToWkt(), GRA_Bilinear)
tif_ds = None
#dataset = gdal.Open( filename, GA_ReadOnly )
#
#print 'Driver: ', dataset.GetDriver().ShortName,'/', \
# dataset.GetDriver().LongName
#print 'Size is ',dataset.RasterXSize,'x',dataset.RasterYSize, \
# 'x',dataset.RasterCount
#
#def get_spatialref(prj):
# spatialref = osr.SpatialReference()
# spatialref.SetFromUserInput(prj)
# return spatialref
#
#sp1 = get_spatialref('epsg:3067')
#sp2 = get_spatialref('+proj=utm +zone=35 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs')
#
#print sp1.IsSameGeogCS(sp2)
|
