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#!/usr/bin/env python
###############################################################################
# $Id: val_repl.py 19920 2010-06-26 10:59:03Z rouault $
#
# Project: GDAL Python samples
# Purpose: Script to replace specified values from the input raster file
# with the new ones. May be useful in cases when you don't like
# value, used for NoData indication and want replace it with other
# value. Input file remains unchanged, results stored in other file.
# Author: Andrey Kiselev, dron@remotesensing.org
#
###############################################################################
# Copyright (c) 2003, Andrey Kiselev <dron@remotesensing.org>
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
###############################################################################
try:
from osgeo import gdal
from osgeo.gdalconst import *
gdal.TermProgress = gdal.TermProgress_nocb
except ImportError:
import gdal
from gdalconst import *
try:
import numpy
except ImportError:
import Numeric as numpy
import sys
# =============================================================================
def Usage():
print('Usage: val_repl.py -innd in_nodata_value -outnd out_nodata_value')
print(' [-of out_format] [-ot out_type] infile outfile')
print('')
sys.exit( 1 )
# =============================================================================
# =============================================================================
def ParseType(type):
gdal_dt = gdal.GetDataTypeByName(type)
if gdal_dt is GDT_Unknown:
gdal_dt = GDT_Byte
return gdal_dt
# =============================================================================
inNoData = None
outNoData = None
infile = None
outfile = None
format = 'GTiff'
type = GDT_Byte
# Parse command line arguments.
i = 1
while i < len(sys.argv):
arg = sys.argv[i]
if arg == '-innd':
i = i + 1
inNoData = float(sys.argv[i])
elif arg == '-outnd':
i = i + 1
outNoData = float(sys.argv[i])
elif arg == '-of':
i = i + 1
format = sys.argv[i]
elif arg == '-ot':
i = i + 1
type = ParseType(sys.argv[i])
elif infile is None:
infile = arg
elif outfile is None:
outfile = arg
else:
Usage()
i = i + 1
if infile is None:
Usage()
if outfile is None:
Usage()
if inNoData is None:
Usage()
if outNoData is None:
Usage()
indataset = gdal.Open( infile, GA_ReadOnly )
out_driver = gdal.GetDriverByName(format)
outdataset = out_driver.Create(outfile, indataset.RasterXSize, indataset.RasterYSize, indataset.RasterCount, type)
gt = indataset.GetGeoTransform()
if gt is not None and gt != (0.0, 1.0, 0.0, 0.0, 0.0, 1.0):
outdataset.SetGeoTransform(gt)
prj = indataset.GetProjectionRef()
if prj is not None and len(prj) > 0:
outdataset.SetProjection(prj)
for iBand in range(1, indataset.RasterCount + 1):
inband = indataset.GetRasterBand(iBand)
outband = outdataset.GetRasterBand(iBand)
for i in range(inband.YSize - 1, -1, -1):
scanline = inband.ReadAsArray(0, i, inband.XSize, 1, inband.XSize, 1)
scanline = numpy.choose( numpy.equal( scanline, inNoData),
(scanline, outNoData) )
outband.WriteArray(scanline, 0, i)
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