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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2017, 2018 Adam.Dybbroe
# Author(s):
# Adam.Dybbroe <a000680@c20671.ad.smhi.se>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Landsat-8 OLI reader
"""
import os
from xlrd import open_workbook
import numpy as np
from pyspectral.utils import convert2hdf5 as tohdf5
from pyspectral.raw_reader import InstrumentRSR
import logging
LOG = logging.getLogger(__name__)
OLI_BAND_NAMES = {'CoastalAerosol': 'B1',
'Blue': 'B2',
'Green': 'B3',
'Red': 'B4',
'NIR': 'B5',
'Cirrus': 'B9',
'SWIR1': 'B6',
'SWIR2': 'B7',
'Pan': 'B8'}
class OliRSR(InstrumentRSR):
"""Class for Landsat OLI RSR"""
def __init__(self, bandname, platform_name):
"""
Read the Landsat OLI relative spectral responses for all channels.
"""
super(OliRSR, self).__init__(bandname, platform_name)
self.instrument = 'oli'
self._get_options_from_config()
LOG.debug("Filename: %s", str(self.path))
if os.path.exists(self.path):
self._load()
else:
raise IOError("Couldn't find an existing file for this band: " +
str(self.bandname))
def _load(self, scale=0.001):
"""Load the Landsat OLI relative spectral responses
"""
with open_workbook(self.path) as wb_:
for sheet in wb_.sheets():
if sheet.name in ['Plot of AllBands', ]:
continue
ch_name = OLI_BAND_NAMES.get(sheet.name.strip())
if ch_name != self.bandname:
continue
wvl = sheet.col_values(0, 2)
resp = sheet.col_values(1, 2)
self.rsr = {'wavelength': np.array(wvl) / 1000.,
'response': np.array(resp)}
break
def main():
"""Main"""
bands = OLI_BAND_NAMES.values()
bands.sort()
for platform_name in ['Landsat-8', ]:
tohdf5(OliRSR, platform_name, bands)
if __name__ == "__main__":
main()
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