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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2021 Satpy developers
#
# This file is part of satpy.
#
# satpy 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.
#
# satpy 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
# satpy. If not, see <http://www.gnu.org/licenses/>.
"""Benchmark utilities."""
import os
def get_filenames(subdir):
"""Get the data filenames manually."""
import glob
base_dir = os.environ.get("SATPY_DEMO_DATA_DIR", ".")
return glob.glob(os.path.join(base_dir, subdir, "*"))
class GeoBenchmarks:
"""Class for geo benchmarks."""
def create_scene(self, filenames=None):
"""Create a scene."""
from satpy import Scene
scn = Scene(filenames=filenames or self.data_files, reader=self.reader)
return scn
def load_no_padding(self, composite, filenames=None):
"""Load one composite or channel."""
scn = self.create_scene(filenames=filenames)
scn.load([composite], pad_data=False)
return scn
def load_and_native_resample(self, composite):
"""Load and native resample a composite or channel."""
return self.load_and_resample(composite, "native")
def load_and_resample(self, composite, resampler, area=None, filenames=None):
"""Load and resample a composite or channel with resampler and area."""
scn = self.load_no_padding(composite, filenames=filenames)
ls = scn.resample(area, resampler=resampler)
ls._readers = scn._readers # workaround for GH#1861
return ls
def compute_composite(self, composite, resampler="native",
area=None, filenames=None):
"""Compute a true color image."""
lscn = self.load_and_resample(
composite, resampler, area, filenames)
lscn[composite].compute()
def save_composite_as_geotiff(self, composite, resampler="native",
area=None, filenames=None):
"""Save a composite to disk as geotiff."""
lscn = self.load_and_resample(composite, resampler, area, filenames)
lscn.save_dataset(composite, filename="test.tif", tiled=True)
def compute_channel(self, channel, filenames=None):
"""Load and compute one channel."""
scn = self.load_no_padding(channel, filenames=filenames)
scn[channel].compute()
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