def test_1000m_to_250m(self):
"""test the 1 km to 250 meter interpolation facility
"""
gfilename_hdf = "testdata/MOD03_A12278_113638_2012278145123.hdf"
gfilename = "testdata/250m_lonlat_section_input.npz"
result_filename = "testdata/250m_lonlat_section_result.npz"
from pyhdf.SD import SD
from pyhdf.error import HDF4Error
gdata = None
try:
gdata = SD(gfilename_hdf)
except HDF4Error:
print "Failed reading eos-hdf file %s" % gfilename_hdf
try:
indata = np.load(gfilename)
except IOError:
return
if gdata:
lats = gdata.select("Latitude")[20:50, :]
lons = gdata.select("Longitude")[20:50, :]
else:
lats = indata['lat'] / 1000.
lons = indata['lon'] / 1000.
verif = np.load(result_filename)
vlons = verif['lon'] / 1000.
vlats = verif['lat'] / 1000.
tlons, tlats = modis1kmto250m(lons, lats)
self.assert_(np.allclose(tlons, vlons, atol=0.05))
self.assert_(np.allclose(tlats, vlats, atol=0.05))
def get_lat_lon_modis(satscene, options):
"""Read lat and lon.
"""
filename_tmpl = satscene.time_slot.strftime(options["geofile"])
file_list = glob.glob(os.path.join(options["dir"], filename_tmpl))
if len(file_list) == 0:
# Try in the same directory as the data
data_dir = os.path.split(options["filename"])[0]
file_list = glob.glob(os.path.join(data_dir, filename_tmpl))
if len(file_list) > 1:
logger.warning("More than 1 geolocation file matching!")
filename = max(file_list, key=lambda x: os.stat(x).st_mtime)
coarse_resolution = 1000
elif len(file_list) == 0:
logger.warning("No geolocation file matching " + filename_tmpl
+ " in " + options["dir"])
logger.debug("Using 5km geolocation and interpolating")
filename = options["filename"]
coarse_resolution = 5000
else:
filename = file_list[0]
coarse_resolution = 1000
logger.debug("Loading geolocation file: " + str(filename)
+ " at resolution " + str(coarse_resolution))
resolution = options["resolution"]
data = SD(str(filename))
lat = data.select("Latitude")
fill_value = lat.attributes()["_FillValue"]
lat = np.ma.masked_equal(lat.get(), fill_value)
lon = data.select("Longitude")
fill_value = lon.attributes()["_FillValue"]
lon = np.ma.masked_equal(lon.get(), fill_value)
if resolution == coarse_resolution:
return lat, lon
cores = options["cores"]
from geotiepoints import modis5kmto1km, modis1kmto500m, modis1kmto250m
logger.debug("Interpolating from " + str(coarse_resolution)
+ " to " + str(resolution))
if coarse_resolution == 5000:
lon, lat = modis5kmto1km(lon, lat)
if resolution == 500:
lon, lat = modis1kmto500m(lon, lat, cores)
if resolution == 250:
lon, lat = modis1kmto250m(lon, lat, cores)
return lat, lon
def get_lat_lon_modis(satscene, options):
"""Read lat and lon.
"""
filename_tmpl = satscene.time_slot.strftime(options["geofile"])
file_list = glob.glob(os.path.join(options["dir"], filename_tmpl))
if len(file_list) == 0:
# Try in the same directory as the data
data_dir = os.path.split(options["filename"])[0]
file_list = glob.glob(os.path.join(data_dir, filename_tmpl))
if len(file_list) > 1:
logger.warning("More than 1 geolocation file matching!")
filename = max(file_list, key=lambda x: os.stat(x).st_mtime)
coarse_resolution = 1000
elif len(file_list) == 0:
logger.warning("No geolocation file matching " + filename_tmpl
+ " in " + options["dir"])
logger.debug("Using 5km geolocation and interpolating")
filename = options["filename"]
coarse_resolution = 5000
else:
filename = file_list[0]
coarse_resolution = 1000
logger.debug("Loading geolocation file: " + str(filename)
+ " at resolution " + str(coarse_resolution))
resolution = options["resolution"]
data = SD(str(filename))
lat = data.select("Latitude")
fill_value = lat.attributes()["_FillValue"]
lat = np.ma.masked_equal(lat.get(), fill_value)
lon = data.select("Longitude")
fill_value = lon.attributes()["_FillValue"]
lon = np.ma.masked_equal(lon.get(), fill_value)
if resolution == coarse_resolution:
return lat, lon
cores = options["cores"]
from geotiepoints import modis5kmto1km, modis1kmto500m, modis1kmto250m
logger.debug("Interpolating from " + str(coarse_resolution)
+ " to " + str(resolution))
if coarse_resolution == 5000:
lon, lat = modis5kmto1km(lon, lat)
if resolution == 500:
lon, lat = modis1kmto500m(lon, lat, cores)
if resolution == 250:
lon, lat = modis1kmto250m(lon, lat, cores)
return lat, lon
def test_1000m_to_250m(self):
"""test the 1 km to 250 meter interpolation facility
"""
with h5py.File(FILENAME_250M_RESULT) as h5f:
glons = h5f['longitude'][:] / 1000.
glats = h5f['latitude'][:] / 1000.
with h5py.File(FILENAME_250M_INPUT) as h5f:
lons = h5f['longitude'][:] / 1000.
lats = h5f['latitude'][:] / 1000.
tlons, tlats = modis1kmto250m(lons, lats)
self.assert_(np.allclose(tlons, glons, atol=0.05))
self.assert_(np.allclose(tlats, glats, atol=0.05))
tlons, tlats = modis1kmto250m(lons, lats, cores=4)
self.assert_(np.allclose(tlons, glons, atol=0.05))
self.assert_(np.allclose(tlats, glats, atol=0.05))
def test_1000m_to_250m(self):
"""test the 1 km to 250 meter interpolation facility
"""
with h5py.File(FILENAME_250M_RESULT) as h5f:
glons = h5f['longitude'][:] / 1000.
glats = h5f['latitude'][:] / 1000.
with h5py.File(FILENAME_250M_INPUT) as h5f:
lons = h5f['longitude'][:] / 1000.
lats = h5f['latitude'][:] / 1000.
tlons, tlats = modis1kmto250m(lons, lats)
self.assert_(np.allclose(tlons, glons, atol=0.05))
self.assert_(np.allclose(tlats, glats, atol=0.05))
tlons, tlats = modis1kmto250m(lons, lats, cores=4)
self.assert_(np.allclose(tlons, glons, atol=0.05))
self.assert_(np.allclose(tlats, glats, atol=0.05))
def test_1000m_to_250m(self):
"""test the 1 km to 250 meter interpolation facility
"""
gfilename_hdf = "testdata/MOD03_A12278_113638_2012278145123.hdf"
gfilename = "testdata/250m_lonlat_section_input.npz"
result_filename = "testdata/250m_lonlat_section_result.npz"
from pyhdf.SD import SD
from pyhdf.error import HDF4Error
gdata = None
try:
gdata = SD(gfilename_hdf)
except HDF4Error:
print "Failed reading eos-hdf file %s" % gfilename_hdf
try:
indata = np.load(gfilename)
except IOError:
return
if gdata:
lats = gdata.select("Latitude")[20:50, :]
lons = gdata.select("Longitude")[20:50, :]
else:
lats = indata['lat'] / 1000.
lons = indata['lon'] / 1000.
verif = np.load(result_filename)
vlons = verif['lon'] / 1000.
vlats = verif['lat'] / 1000.
tlons, tlats = modis1kmto250m(lons, lats)
self.assert_(np.allclose(tlons, vlons, atol=0.05))
self.assert_(np.allclose(tlats, vlats, atol=0.05))
tlons, tlats = modis1kmto250m(lons, lats, cores=4)
self.assert_(np.allclose(tlons, vlons, atol=0.05))
self.assert_(np.allclose(tlats, vlats, atol=0.05))
def get_lonlat(self, resolution, cores=1):
"""Read lat and lon.
"""
if resolution in self.areas:
return self.areas[resolution]
logger.debug("generating lon, lat at %d", resolution)
if self.geofile is not None:
coarse_resolution = 1000
filename = self.geofile
else:
coarse_resolution = 5000
logger.info("Using 5km geolocation and interpolating")
filename = (self.datafiles.get(1000) or
self.datafiles.get(500) or
self.datafiles.get(250))
logger.debug("Loading geolocation from file: " + str(filename)
+ " at resolution " + str(coarse_resolution))
data = SD(str(filename))
lat = data.select("Latitude")
fill_value = lat.attributes()["_FillValue"]
lat = np.ma.masked_equal(lat.get(), fill_value)
lon = data.select("Longitude")
fill_value = lon.attributes()["_FillValue"]
lon = np.ma.masked_equal(lon.get(), fill_value)
if resolution == coarse_resolution:
self.areas[resolution] = lon, lat
return lon, lat
from geotiepoints import modis5kmto1km, modis1kmto500m, modis1kmto250m
logger.debug("Interpolating from " + str(coarse_resolution)
+ " to " + str(resolution))
if coarse_resolution == 5000:
lon, lat = modis5kmto1km(lon, lat)
if resolution == 500:
lon, lat = modis1kmto500m(lon, lat, cores)
if resolution == 250:
lon, lat = modis1kmto250m(lon, lat, cores)
self.areas[resolution] = lon, lat
return lon, lat
def get_lonlat(self, resolution, time_slot, cores=1):
"""Read lat and lon.
"""
if (resolution, time_slot) in self.areas:
return self.areas[resolution, time_slot]
logger.debug("generating lon, lat at %d", resolution)
if self.geofile is not None:
coarse_resolution = 1000
filename = self.geofile
else:
coarse_resolution = 5000
logger.info("Using 5km geolocation and interpolating")
filename = (self.datafiles.get(1000) or
self.datafiles.get(500) or
self.datafiles.get(250))
logger.debug("Loading geolocation from file: " + str(filename)
+ " at resolution " + str(coarse_resolution))
data = SD(str(filename))
lat = data.select("Latitude")
fill_value = lat.attributes()["_FillValue"]
lat = np.ma.masked_equal(lat.get(), fill_value)
lon = data.select("Longitude")
fill_value = lon.attributes()["_FillValue"]
lon = np.ma.masked_equal(lon.get(), fill_value)
if resolution == coarse_resolution:
self.areas[resolution] = lon, lat
return lon, lat
from geotiepoints import modis5kmto1km, modis1kmto500m, modis1kmto250m
logger.debug("Interpolating from " + str(coarse_resolution)
+ " to " + str(resolution))
if coarse_resolution == 5000:
lon, lat = modis5kmto1km(lon, lat)
if resolution == 500:
lon, lat = modis1kmto500m(lon, lat, cores)
if resolution == 250:
lon, lat = modis1kmto250m(lon, lat, cores)
self.areas[resolution, time_slot] = lon, lat
return lon, lat
