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#!/usr/bin/env python |
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# -*- coding: utf-8 -*- |
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# Copyright (c) 2018 Adam.Dybbroe |
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# Author(s): |
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# Adam.Dybbroe <[email protected]> |
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# This program is free software: you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation, either version 3 of the License, or |
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# (at your option) any later version. |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# You should have received a copy of the GNU General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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""" |
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Reading the original agency formattet Sentinel-2 MSI relative spectral responses |
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https://earth.esa.int/documents/247904/685211/S2-SRF_COPE-GSEG-EOPG-TN-15-0007_3.0.xlsx |
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""" |
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import os |
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from xlrd import open_workbook |
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import numpy as np |
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from pyspectral.utils import convert2hdf5 as tohdf5 |
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from pyspectral.raw_reader import InstrumentRSR |
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import logging |
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LOG = logging.getLogger(__name__) |
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MSI_BAND_NAMES = {} |
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MSI_BAND_NAMES['S2A'] = {'S2A_SR_AV_B1': 'B01', |
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'S2A_SR_AV_B2': 'B02', |
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'S2A_SR_AV_B3': 'B03', |
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'S2A_SR_AV_B4': 'B04', |
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'S2A_SR_AV_B5': 'B05', |
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'S2A_SR_AV_B6': 'B06', |
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'S2A_SR_AV_B7': 'B07', |
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'S2A_SR_AV_B8': 'B08', |
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'S2A_SR_AV_B8A': 'B8A', |
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'S2A_SR_AV_B9': 'B09', |
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'S2A_SR_AV_B10': 'B10', |
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'S2A_SR_AV_B11': 'B11', |
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'S2A_SR_AV_B12': 'B12'} |
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MSI_BAND_NAMES['S2B'] = {'S2B_SR_AV_B1': 'B01', |
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'S2B_SR_AV_B2': 'B02', |
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'S2B_SR_AV_B3': 'B03', |
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'S2B_SR_AV_B4': 'B04', |
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'S2B_SR_AV_B5': 'B05', |
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'S2B_SR_AV_B6': 'B06', |
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'S2B_SR_AV_B7': 'B07', |
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'S2B_SR_AV_B8': 'B08', |
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'S2B_SR_AV_B8A': 'B8A', |
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'S2B_SR_AV_B9': 'B09', |
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'S2B_SR_AV_B10': 'B10', |
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'S2B_SR_AV_B11': 'B11', |
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'S2B_SR_AV_B12': 'B12'} |
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SHEET_HEADERS = {'Spectral Responses (S2A)': 'S2A', |
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'Spectral Responses (S2B)': 'S2B'} |
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PLATFORM_SHORT_NAME = {'Sentinel-2A': 'S2A', |
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'Sentinel-2B': 'S2B'} |
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class MsiRSR(InstrumentRSR): |
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"""Class for Sentinel-2 MSI RSR""" |
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def __init__(self, bandname, platform_name): |
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""" |
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Read the Sentinel-2 MSI relative spectral responses for all channels. |
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""" |
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super(MsiRSR, self).__init__(bandname, platform_name) |
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self.instrument = 'msi' |
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self._get_options_from_config() |
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LOG.debug("Filename: %s", str(self.path)) |
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if os.path.exists(self.path): |
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self._load() |
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else: |
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raise IOError("Couldn't find an existing file for this band: " + |
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str(self.bandname)) |
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def _load(self, scale=0.001): |
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"""Load the Sentinel-2 MSI relative spectral responses |
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""" |
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with open_workbook(self.path) as wb_: |
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for sheet in wb_.sheets(): |
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if sheet.name not in SHEET_HEADERS.keys(): |
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continue |
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plt_short_name = PLATFORM_SHORT_NAME.get(self.platform_name) |
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if plt_short_name != SHEET_HEADERS.get(sheet.name): |
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continue |
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wvl = sheet.col_values(0, 1) |
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for idx in range(1, sheet.row_len(0)): |
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ch_name = MSI_BAND_NAMES[plt_short_name].get(str(sheet.col_values(idx, 0, 1)[0])) |
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if ch_name != self.bandname: |
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continue |
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resp = sheet.col_values(idx, 1) |
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resp = np.array(resp) |
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resp = np.where(resp == '', 0, resp).astype('float32') |
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mask = np.less_equal(resp, 0.00001) |
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wvl0 = np.ma.masked_array(wvl, mask=mask) |
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wvl_mask = np.ma.masked_outside(wvl, wvl0.min() - 2, wvl0.max() + 2) |
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wvl = wvl_mask.compressed() |
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resp = np.ma.masked_array(resp, mask=wvl_mask.mask).compressed() |
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self.rsr = {'wavelength': wvl / 1000., 'response': resp} |
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break |
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break |
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def main(): |
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"""Main""" |
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bands = MSI_BAND_NAMES['S2A'].values() |
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bands.sort() |
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for platform_name in ['Sentinel-2A', ]: |
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tohdf5(MsiRSR, platform_name, bands) |
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bands = MSI_BAND_NAMES['S2B'].values() |
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bands.sort() |
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for platform_name in ['Sentinel-2B', ]: |
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tohdf5(MsiRSR, platform_name, bands) |
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if __name__ == "__main__": |
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main() |
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pytroll /
pyspectral
