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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (c) 2016-2022 Pytroll developers
#
#
# 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/>.
"""Interface to the original Envisat AATSR spectral response functions.
From ESA: http://envisat.esa.int/handbooks/aatsr/aux-files/consolidatedsrfs.xls
"""
import logging
import numpy as np
from xlrd import open_workbook
from pyspectral.config import get_config
from pyspectral.utils import convert2hdf5 as tohdf5
LOG = logging.getLogger(__name__)
AATSR_BAND_NAMES = ['ir12', 'ir11', 'ir37', 'v16', 'v870', 'v659', 'v555']
class AatsrRSR(object):
"""Class for Envisat AATSR RSR."""
def __init__(self, bandname, platform_name='Envisat'):
"""Read the aatsr relative spectral responses for all channels."""
self.platform_name = platform_name
self.instrument = 'aatsr'
self.bandname = bandname
self.rsr = None
options = get_config()
self.aatsr_path = options[
self.platform_name + '-' + self.instrument].get('path')
self.output_dir = options.get('rsr_dir', './')
self._load()
def _load(self, filename=None):
"""Read the AATSR rsr data."""
if not filename:
filename = self.aatsr_path
wb_ = open_workbook(filename)
for sheet in wb_.sheets():
ch_name = sheet.name.strip()
if ch_name == 'aatsr_' + self.bandname:
data = np.array([s.split() for s in
sheet.col_values(0,
start_rowx=3, end_rowx=258)])
data = data.astype('f')
wvl = data[:, 0]
resp = data[:, 1]
self.rsr = {'wavelength': wvl, 'response': resp}
if __name__ == "__main__":
tohdf5(AatsrRSR, 'Envisat', AATSR_BAND_NAMES)
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