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#!/usr/bin/env python
###############################################################################
# $Id: histrep.py 18195 2009-12-06 20:24:39Z rouault $
#
# Project: GDAL Python Samples
# Purpose: Report histogram from file.
# Author: Frank Warmerdam, warmerdam@pobox.com
#
###############################################################################
# Copyright (c) 2005, Frank Warmerdam, warmerdam@pobox.com
#
# 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
except ImportError:
import gdal
import sys
# =============================================================================
def Usage():
print('Usage: histrep.py [-force] input_file')
print(' or')
print(' histrep.py -req <min> <max> <buckets> [-force] [-approxok]')
print(' [-ioor] input_file')
print('')
sys.exit( 1 )
# =============================================================================
if __name__ == '__main__':
argv = gdal.GeneralCmdLineProcessor( sys.argv )
req = None
force = 0
approxok = 0
ioor = 0
file = None
# Parse command line arguments.
i = 1
while i < len(argv):
arg = argv[i]
if arg == '-req':
req = (float(argv[i+1]), float(argv[i+2]), int(argv[i+3]))
i = i + 3
elif arg == '-ioor':
ioor = 1
elif arg == '-approxok':
approxok = 1
elif arg == '-force':
force = 1
elif file is None:
file = arg
else:
Usage()
i = i + 1
if file is None:
Usage()
# -----------------------------------------------------------------------
ds = gdal.Open( file )
if req is None:
hist = ds.GetRasterBand(1).GetDefaultHistogram( force=force )
if hist is None:
print('No default histogram.')
else:
print('Default Histogram:')
print('Min: ', hist[0])
print('Max: ', hist[1])
print('Buckets: ', hist[2])
print('Histogram: ', hist[3])
else:
hist = ds.GetRasterBand(1).GetHistogram( req[0], req[1], req[2],
ioor, approxok )
if hist is not None:
print('Histogram: ', hist)
ds = None
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