#!/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)