def _set_time_coverage_metadata(self, gdal_metadata):
### GET START TIME from METADATA
time_coverage_start = None
if 'time_coverage_start' in gdal_metadata:
time_coverage_start = parse_time(
gdal_metadata['time_coverage_start'])
### GET END TIME from METADATA
time_coverage_end = None
if 'time_coverage_end' in gdal_metadata:
time_coverage_end = parse_time(gdal_metadata['time_coverage_end'])
# set time_coverage_start if available
if time_coverage_start is not None:
self.dataset.SetMetadataItem('time_coverage_start',
time_coverage_start.isoformat())
# set time_coverage_end if available
if time_coverage_end is not None:
self.dataset.SetMetadataItem('time_coverage_end',
time_coverage_end.isoformat())
def __init__(self,
filename,
gdalDataset,
gdalMetadata,
resolution='low',
**kwargs):
''' Create LANDSAT VRT from multiple tif files or single tar.gz file'''
mtlFileName = ''
bandFileNames = []
bandSizes = []
bandDatasets = []
fname = os.path.split(filename)[1]
if (filename.endswith('.tar') or filename.endswith('.tar.gz')
or filename.endswith('.tgz')):
# try to open .tar or .tar.gz or .tgz file with tar
try:
tarFile = tarfile.open(filename)
except:
raise WrongMapperError
# collect names of bands and corresponding sizes
# into bandsInfo dict and bandSizes list
tarNames = sorted(tarFile.getnames())
for tarName in tarNames:
# check if TIF files inside TAR qualify
if (tarName[0] in ['L', 'M']
and os.path.splitext(tarName)[1] in ['.TIF', '.tif']):
# open TIF file from TAR using VSI
sourceFilename = '/vsitar/%s/%s' % (filename, tarName)
gdalDatasetTmp = gdal.Open(sourceFilename)
# keep name, GDALDataset and size
bandFileNames.append(sourceFilename)
bandSizes.append(gdalDatasetTmp.RasterXSize)
bandDatasets.append(gdalDatasetTmp)
elif (tarName.endswith('MTL.txt')
or tarName.endswith('MTL.TXT')):
# get mtl file
mtlFileName = tarName
elif ((fname.startswith('L') or fname.startswith('M'))
and (fname.endswith('.tif') or fname.endswith('.TIF')
or fname.endswith('._MTL.txt'))):
# try to find TIF/tif files with the same name as input file
path, coreName = os.path.split(filename)
coreName = os.path.splitext(coreName)[0].split('_')[0]
coreNameMask = coreName + '*[tT][iI][fF]'
tifNames = sorted(glob.glob(os.path.join(path, coreNameMask)))
for tifName in tifNames:
sourceFilename = tifName
gdalDatasetTmp = gdal.Open(sourceFilename)
# keep name, GDALDataset and size
bandFileNames.append(sourceFilename)
bandSizes.append(gdalDatasetTmp.RasterXSize)
bandDatasets.append(gdalDatasetTmp)
# get mtl file
mtlFiles = glob.glob(coreName + '*[mM][tT][lL].[tT][xX][tT]')
if len(mtlFiles) > 0:
mtlFileName = mtlFiles[0]
else:
raise WrongMapperError
# if not TIF files found - not appropriate mapper
if not bandFileNames:
raise WrongMapperError
# get appropriate band size based on number of unique size and
# required resoltuion
if resolution == 'low':
bandXSise = min(bandSizes)
elif resolution in ['high', 'hi']:
bandXSise = max(bandSizes)
else:
raise ValueError('Wrong resolution %s for file %s' %
(resolution, filename))
# find bands with appropriate size and put to metaDict
metaDict = []
for bandFileName, bandSize, bandDataset in zip(bandFileNames,
bandSizes,
bandDatasets):
if bandSize == bandXSise:
# let last part of file name be suffix
bandSuffix = os.path.splitext(bandFileName)[0].split('_')[-1]
metaDict.append({
'src': {
'SourceFilename': bandFileName,
'SourceBand': 1,
'ScaleRatio': 0.1
},
'dst': {
'wkv': 'toa_outgoing_spectral_radiance',
'suffix': bandSuffix
}
})
gdalDataset4Use = bandDataset
# create empty VRT dataset with geolocation only
self._init_from_gdal_dataset(gdalDataset4Use)
# add bands with metadata and corresponding values to the empty VRT
self.create_bands(metaDict)
if len(mtlFileName) > 0:
mtlFileName = os.path.join(
os.path.split(bandFileNames[0])[0], mtlFileName)
mtlFileLines = [
line.strip() for line in self.read_vsi(mtlFileName).split('\n')
]
dateString = [
line.split('=')[1].strip() for line in mtlFileLines
if ('DATE_ACQUIRED' in line or 'ACQUISITION_DATE' in line)
][0]
timeStr = [
line.split('=')[1].strip() for line in mtlFileLines
if ('SCENE_CENTER_TIME' in line
or 'SCENE_CENTER_SCAN_TIME' in line)
][0]
time_start = parse_time(dateString + 'T' + timeStr).isoformat()
time_end = (parse_time(dateString + 'T' + timeStr) +
datetime.timedelta(microseconds=60000000)).isoformat()
self.dataset.SetMetadataItem('time_coverage_start', time_start)
self.dataset.SetMetadataItem('time_coverage_end', time_end)
# set platform
platform = 'LANDSAT'
if fname[2].isdigit():
platform += '-' + fname[2]
ee = pti.get_gcmd_platform(platform)
self.dataset.SetMetadataItem('platform', json.dumps(ee))
# set instrument
instrument = {
'LANDSAT': 'MSS',
'LANDSAT-1': 'MSS',
'LANDSAT-2': 'MSS',
'LANDSAT-3': 'MSS',
'LANDSAT-4': 'TM',
'LANDSAT-5': 'TM',
'LANDSAT-7': 'ETM+',
'LANDSAT-8': 'OLI'
}[platform]
ee = pti.get_gcmd_instrument(instrument)
self.dataset.SetMetadataItem('instrument', json.dumps(ee))
def __init__(self,
filename,
gdalDataset,
gdalMetadata,
GCP_STEP=20,
MAX_LAT=90,
MIN_LAT=50,
resolution='low',
**kwargs):
''' Create VRT
Parameters
----------
GCP_COUNT : int
number of GCPs along each dimention
'''
ifile = os.path.split(filename)[1]
if not ifile.startswith('GW1AM2_') or not ifile.endswith('.h5'):
raise WrongMapperError
try:
ProductName = gdalMetadata['ProductName']
PlatformShortName = gdalMetadata['PlatformShortName']
SensorShortName = gdalMetadata['SensorShortName']
except:
raise WrongMapperError
if (not ProductName == 'AMSR2-L1R'
or not PlatformShortName == 'GCOM-W1'
or not SensorShortName == 'AMSR2'):
raise WrongMapperError
if resolution == 'low':
subDatasetWidth = 243
else:
subDatasetWidth = 486
# get GCPs from lon/lat grids
latGrid = gdal.Open(
'HDF5:"%s"://Latitude_of_Observation_Point_for_89A' %
filename).ReadAsArray()
lonGrid = gdal.Open(
'HDF5:"%s"://Longitude_of_Observation_Point_for_89A' %
filename).ReadAsArray()
if subDatasetWidth == 243:
latGrid = latGrid[:, ::2]
lonGrid = lonGrid[:, ::2]
dx = .5
dy = .5
gcps = []
k = 0
maxY = 0
minY = latGrid.shape[0]
for i0 in range(0, latGrid.shape[0], GCP_STEP):
for i1 in range(0, latGrid.shape[1], GCP_STEP):
# create GCP with X,Y,pixel,line from lat/lon matrices
lon = float(lonGrid[i0, i1])
lat = float(latGrid[i0, i1])
if (lon >= -180 and lon <= 180 and lat >= MIN_LAT
and lat <= MAX_LAT):
gcp = gdal.GCP(lon, lat, 0, i1 + dx, i0 + dy)
gcps.append(gcp)
k += 1
maxY = max(maxY, i0)
minY = min(minY, i0)
yOff = minY
ySize = maxY - minY
# remove Y-offset from gcps
for gcp in gcps:
gcp.GCPLine -= yOff
metaDict = []
subDatasets = gdalDataset.GetSubDatasets()
metadata = gdalDataset.GetMetadata()
for subDataset in subDatasets:
# select subdatasets fro that resolution (width)
if (subDatasetWidth == int(
subDataset[1].split(']')[0].split('x')[-1])
and 'Latitude' not in subDataset[0]
and 'Longitude' not in subDataset[0]):
name = subDataset[0].split('/')[-1]
# find scale
scale = 1
for meta in metadata:
if name + '_SCALE' in meta:
scale = float(metadata[meta])
# create meta entry
metaEntry = {
'src': {
'SourceFilename': subDataset[0],
'sourceBand': 1,
'ScaleRatio': scale,
'ScaleOffset': 0,
'yOff': yOff,
'ySize': ySize,
},
'dst': {
'name': name
}
}
metaDict.append(metaEntry)
# create VRT from one of the subdatasets
gdalSubDataset = gdal.Open(metaEntry['src']['SourceFilename'])
self._init_from_dataset_params(subDatasetWidth, ySize,
(1, 0, 0, ySize, 0, -1),
NSR().wkt)
# add bands with metadata and corresponding values to the empty VRT
self.create_bands(metaDict)
self.dataset.SetMetadataItem(
'time_coverage_start',
parse_time(gdalMetadata['ObservationStartDateTime']).isoformat())
self.dataset.SetMetadataItem(
'time_coverage_end',
parse_time(gdalMetadata['ObservationEndDateTime']).isoformat())
# append GCPs and lat/lon projection to the vsiDataset
self.dataset.SetGCPs(gcps, NSR().wkt)
self.reproject_gcps(
'+proj=stere +datum=WGS84 +ellps=WGS84 +lat_0=90 +lon_0=0 +no_defs'
)
self.tps = True
mm = pti.get_gcmd_instrument('AMSR2')
ee = pti.get_gcmd_platform('GCOM-W1')
self.dataset.SetMetadataItem('instrument', json.dumps(mm))
self.dataset.SetMetadataItem('platform', json.dumps(ee))
def __init__(self, filename, gdalDataset, gdalMetadata, **kwargs):
''' Create CSKS VRT '''
if filename.split('/')[-1][0:4] != "CSKS":
raise WrongMapperError
# Get coordinates
metadata = gdalMetadata['Estimated_Bottom_Left_Geodetic_Coordinates']
bottom_left_lon = float(metadata.split(' ')[1])
bottom_left_lat = float(metadata.split(' ')[0])
metadata = gdalMetadata['Estimated_Bottom_Right_Geodetic_Coordinates']
bottom_right_lon = float(metadata.split(' ')[1])
bottom_right_lat = float(metadata.split(' ')[0])
metadata = gdalMetadata['Estimated_Top_Left_Geodetic_Coordinates']
top_left_lon = float(metadata.split(' ')[1])
top_left_lat = float(metadata.split(' ')[0])
metadata = gdalMetadata['Estimated_Top_Right_Geodetic_Coordinates']
top_right_lon = float(metadata.split(' ')[1])
top_right_lat = float(metadata.split(' ')[0])
metadata = gdalMetadata['Scene_Centre_Geodetic_Coordinates']
center_lon = float(metadata.split(' ')[1])
center_lat = float(metadata.split(' ')[0])
# Get sub-datasets
subDatasets = gdalDataset.GetSubDatasets()
# Get file names from dataset or subdataset
if subDatasets.__len__() == 1:
filenames = [filename]
else:
filenames = [f[0] for f in subDatasets]
for i, elem in enumerate(filenames):
if filenames[i][-3:] == 'QLK':
filenames.pop(i)
#print filenames
subDataset = gdal.Open(filenames[0])
# generate list of GCPs
gcps = []
# create GCP with X,Y,Z(?),pixel,line from lat/lon matrices
gcp = gdal.GCP(float(bottom_left_lon), float(bottom_left_lat), 0, 0, 0)
gcps.append(gcp)
#self.logger.debug('%d %d %d %f %f', 0, gcp.GCPPixel, gcp.GCPLine,
# gcp.GCPX, gcp.GCPY)
gcp = gdal.GCP(float(bottom_right_lon), float(bottom_right_lat), 0,
subDataset.RasterXSize, 0)
gcps.append(gcp)
#self.logger.debug('%d %d %d %f %f', 1, gcp.GCPPixel, gcp.GCPLine,
# gcp.GCPX, gcp.GCPY)
gcp = gdal.GCP(float(top_left_lon), float(top_left_lat), 0, 0,
subDataset.RasterYSize)
gcps.append(gcp)
#self.logger.debug('%d %d %d %f %f', 2, gcp.GCPPixel, gcp.GCPLine,
# gcp.GCPX, gcp.GCPY)
gcp = gdal.GCP(float(top_right_lon), float(top_right_lat), 0,
subDataset.RasterXSize, subDataset.RasterYSize)
gcps.append(gcp)
#self.logger.debug('%d %d %d %f %f', 3, gcp.GCPPixel, gcp.GCPLine,
# gcp.GCPX, gcp.GCPY)
gcp = gdal.GCP(float(center_lon), float(center_lat), 0,
int(np.round(subDataset.RasterXSize / 2.)),
int(round(subDataset.RasterYSize / 2.)))
gcps.append(gcp)
#self.logger.debug('%d %d %d %f %f', 4, gcp.GCPPixel, gcp.GCPLine,
# gcp.GCPX, gcp.GCPY)
# append GCPs and lat/lon projection to the vsiDataset
latlongSRS = osr.SpatialReference()
latlongSRS.ImportFromProj4(
"+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs")
latlongSRSWKT = latlongSRS.ExportToWkt()
# create empty VRT dataset with geolocation only
# x_size, y_size, geo_transform, projection, gcps=None, gcp_projection='', **kwargs
self._init_from_dataset_params(
subDataset.RasterXSize, subDataset.RasterYSize,
(0, 1, 0, subDataset.RasterYSize, 0, -1), latlongSRSWKT, gcps,
latlongSRSWKT)
#print self.filename
# Read all bands later
#band='S01'
#res='SBI'
# Use only full size "original" datasets
for i, elem in enumerate(filenames):
if filenames[i][-3:] == 'SBI':
# Add real and imaginary raw counts as bands
src = {
'SourceFilename': filenames[i],
'SourceBand': 1,
'DataType': gdal.GDT_Int16
}
dst = {
'dataType':
gdal.GDT_Float32,
'name':
'RawCounts_%s_real' %
gdalMetadata[filenames[i][-7:-4] + '_Polarisation']
}
self.create_band(src, dst)
src = {
'SourceFilename': filenames[i],
'SourceBand': 2,
'DataType': gdal.GDT_Int16
}
dst = {
'dataType':
gdal.GDT_Float32,
'name':
'RawCounts_%s_imaginary' %
gdalMetadata[filenames[i][-7:-4] + '_Polarisation']
}
self.create_band(src, dst)
self.dataset.FlushCache()
for i, elem in enumerate(filenames):
if filenames[i][-3:] == 'SBI':
# Calculate sigma0 scaling factor
Rref = float(gdalMetadata['Reference_Slant_Range'])
Rexp = float(gdalMetadata['Reference_Slant_Range_Exponent'])
alphaRef = float(gdalMetadata['Reference_Incidence_Angle'])
F = float(gdalMetadata['Rescaling_Factor'])
K = float(gdalMetadata[filenames[i][-7:-4] +
'_Calibration_Constant'])
Ftot = Rref**(2. * Rexp)
Ftot *= np.sin(alphaRef * np.pi / 180.0)
Ftot /= F**2.
Ftot /= K
#print Ftot
src = [{
'SourceFilename': self.filename,
'DataType': gdal.GDT_Float32,
'SourceBand': 2 * i + 1,
'ScaleRatio': np.sqrt(Ftot)
}, {
'SourceFilename': self.filename,
'DataType': gdal.GDT_Float32,
'SourceBand': 2 * i + 2,
'ScaleRatio': np.sqrt(Ftot)
}]
dst = {
'wkv':
'surface_backwards_scattering_coefficient_of_radar_wave',
'PixelFunctionType':
'RawcountsToSigma0_CosmoSkymed_SBI',
'polarisation':
gdalMetadata[filenames[i][-7:-4] + '_Polarisation'],
'name':
'sigma0_%s' %
gdalMetadata[filenames[i][-7:-4] + '_Polarisation'],
'SatelliteID':
gdalMetadata['Satellite_ID'],
'dataType':
gdal.GDT_Float32
}
#'pass': gdalMetadata['']
# - I can't find this in the metadata...
self.create_band(src, dst)
self.dataset.FlushCache()
self.dataset.SetMetadataItem(
'time_coverage_start',
parse_time(gdalMetadata['Scene_Sensing_Start_UTC']).isoformat())
self.dataset.SetMetadataItem(
'time_coverage_end',
parse_time(gdalMetadata['Scene_Sensing_Stop_UTC']).isoformat())
def __init__(self,
inputFileName,
gdalDataset,
gdalMetadata,
logLevel=30,
rmMetadatas=[
'NETCDF_VARNAME', '_Unsigned', 'ScaleRatio',
'ScaleOffset', 'dods_variable'
],
**kwargs):
# Remove 'NC_GLOBAL#' and 'GDAL_' and 'NANSAT_'
# from keys in gdalDataset
tmpGdalMetadata = {}
geoMetadata = {}
origin_is_nansat = False
if not gdalMetadata:
raise WrongMapperError
for key in gdalMetadata.keys():
newKey = key.replace('NC_GLOBAL#', '').replace('GDAL_', '')
if 'NANSAT_' in newKey:
geoMetadata[newKey.replace('NANSAT_', '')] = gdalMetadata[key]
origin_is_nansat = True
else:
tmpGdalMetadata[newKey] = gdalMetadata[key]
gdalMetadata = tmpGdalMetadata
fileExt = os.path.splitext(inputFileName)[1]
# Get file names from dataset or subdataset
subDatasets = gdalDataset.GetSubDatasets()
if len(subDatasets) == 0:
filenames = [inputFileName]
else:
filenames = [f[0] for f in subDatasets]
# add bands with metadata and corresponding values to the empty VRT
metaDict = []
xDatasetSource = ''
yDatasetSource = ''
firstXSize = 0
firstYSize = 0
for _, filename in enumerate(filenames):
subDataset = gdal.Open(filename)
# choose the first dataset whith grid
if (firstXSize == 0 and firstYSize == 0
and subDataset.RasterXSize > 1
and subDataset.RasterYSize > 1):
firstXSize = subDataset.RasterXSize
firstYSize = subDataset.RasterYSize
firstSubDataset = subDataset
# get projection from the first subDataset
projection = firstSubDataset.GetProjection()
# take bands whose sizes are same as the first band.
if (subDataset.RasterXSize == firstXSize
and subDataset.RasterYSize == firstYSize):
if projection == '':
projection = subDataset.GetProjection()
if ('GEOLOCATION_X_DATASET' in filename
or 'longitude' in filename):
xDatasetSource = filename
elif ('GEOLOCATION_Y_DATASET' in filename
or 'latitude' in filename):
yDatasetSource = filename
else:
for iBand in range(subDataset.RasterCount):
subBand = subDataset.GetRasterBand(iBand + 1)
bandMetadata = subBand.GetMetadata_Dict()
if 'PixelFunctionType' in bandMetadata:
bandMetadata.pop('PixelFunctionType')
sourceBands = iBand + 1
# sourceBands = i*subDataset.RasterCount + iBand + 1
# generate src metadata
src = {
'SourceFilename': filename,
'SourceBand': sourceBands
}
# set scale ratio and scale offset
scaleRatio = bandMetadata.get(
'ScaleRatio',
bandMetadata.get(
'scale', bandMetadata.get('scale_factor', '')))
if len(scaleRatio) > 0:
src['ScaleRatio'] = scaleRatio
scaleOffset = bandMetadata.get(
'ScaleOffset',
bandMetadata.get(
'offset', bandMetadata.get('add_offset', '')))
if len(scaleOffset) > 0:
src['ScaleOffset'] = scaleOffset
# sate DataType
src['DataType'] = subBand.DataType
# generate dst metadata
# get all metadata from input band
dst = bandMetadata
# set wkv and bandname
dst['wkv'] = bandMetadata.get('standard_name', '')
# first, try the name metadata
if 'name' in bandMetadata:
bandName = bandMetadata['name']
else:
# if it doesn't exist get name from NETCDF_VARNAME
bandName = bandMetadata.get('NETCDF_VARNAME', '')
if len(bandName) == 0:
bandName = bandMetadata.get(
'dods_variable', '')
# remove digits added by gdal in
# exporting to netcdf...
if (len(bandName) > 0 and origin_is_nansat
and fileExt == '.nc'):
if bandName[-1:].isdigit():
bandName = bandName[:-1]
if bandName[-1:].isdigit():
bandName = bandName[:-1]
# if still no bandname, create one
if len(bandName) == 0:
bandName = 'band_%03d' % iBand
dst['name'] = bandName
# remove non-necessary metadata from dst
for rmMetadata in rmMetadatas:
if rmMetadata in dst:
dst.pop(rmMetadata)
# append band with src and dst dictionaries
metaDict.append({'src': src, 'dst': dst})
# create empty VRT dataset with geolocation only
self._init_from_gdal_dataset(firstSubDataset, metadata=gdalMetadata)
# add bands with metadata and corresponding values to the empty VRT
self.create_bands(metaDict)
self._create_complex_bands(filenames)
if len(projection) == 0:
# projection was not set automatically
# get projection from GCPProjection
projection = geoMetadata.get('GCPProjection', '')
if len(projection) == 0:
# no projection was found in dataset or metadata:
# generate WGS84 by default
projection = NSR().wkt
# fix problem with MET.NO files where a, b given in m and XC/YC in km
if ('UNIT["kilometre"' in projection
and ',SPHEROID["Spheroid",6378273,7.331926543631893e-12]'
in projection):
projection = projection.replace(
',SPHEROID["Spheroid",6378273,7.331926543631893e-12]', '')
# set projection
self.dataset.SetProjection(self.repare_projection(projection))
# check if GCPs were added from input dataset
gcps = firstSubDataset.GetGCPs()
gcpProjection = firstSubDataset.GetGCPProjection()
# if no GCPs in input dataset: try to add GCPs from metadata
if not gcps:
gcps = self.add_gcps_from_metadata(geoMetadata)
# if yet no GCPs: try to add GCPs from variables
if not gcps:
gcps = self.add_gcps_from_variables(inputFileName)
if gcps:
if len(gcpProjection) == 0:
# get GCP projection and repare
gcpProjection = self.repare_projection(
geoMetadata.get('GCPProjection', ''))
# add GCPs to dataset
self.dataset.SetGCPs(gcps, gcpProjection)
self.dataset.SetProjection('')
self._remove_geotransform()
# Find proper bands and insert GEOLOCATION ARRAY into dataset
if len(xDatasetSource) > 0 and len(yDatasetSource) > 0:
self._add_geolocation(
Geolocation.from_filenames(xDatasetSource, yDatasetSource))
elif not gcps:
# if no GCPs found and not GEOLOCATION ARRAY set:
# Set Nansat Geotransform if it is not set automatically
geoTransform = self.dataset.GetGeoTransform()
if len(geoTransform) == 0:
geoTransformStr = geoMetadata.get('GeoTransform',
'(0|1|0|0|0|0|1)')
geoTransform = eval(geoTransformStr.replace('|', ','))
self.dataset.SetGeoTransform(geoTransform)
subMetadata = firstSubDataset.GetMetadata()
### GET START TIME from METADATA
time_coverage_start = None
if 'start_time' in gdalMetadata:
time_coverage_start = parse_time(gdalMetadata['start_time'])
elif 'start_date' in gdalMetadata:
time_coverage_start = parse_time(gdalMetadata['start_date'])
elif 'time_coverage_start' in gdalMetadata:
time_coverage_start = parse_time(
gdalMetadata['time_coverage_start'])
### GET END TIME from METADATA
time_coverage_end = None
if 'stop_time' in gdalMetadata:
time_coverage_end = parse_time(gdalMetadata['stop_time'])
elif 'stop_date' in gdalMetadata:
time_coverage_end = parse_time(gdalMetadata['stop_date'])
elif 'time_coverage_stop' in gdalMetadata:
time_coverage_end = parse_time(gdalMetadata['time_coverage_stop'])
elif 'end_time' in gdalMetadata:
time_coverage_end = parse_time(gdalMetadata['end_time'])
elif 'end_date' in gdalMetadata:
time_coverage_end = parse_time(gdalMetadata['end_date'])
elif 'time_coverage_end' in gdalMetadata:
time_coverage_end = parse_time(gdalMetadata['time_coverage_end'])
### GET start time from time variable
if (time_coverage_start is None and 'time#standard_name' in subMetadata
and subMetadata['time#standard_name'] == 'time'
and 'time#units' in subMetadata):
# get data from netcdf data
ncFile = Dataset(inputFileName, 'r')
time_var = ncFile.variables['time']
t0 = time_var[0]
if len(time_var) == 1:
t1 = t0 + 1
else:
t1 = time_var[-1]
time_units_start = parse(time_var.units, fuzzy=True, ignoretz=True)
time_units_to_seconds = {
'second': 1.0,
'hour': 60 * 60.0,
'day': 24 * 60 * 60.0
}
for key in time_units_to_seconds:
if key in time_var.units:
factor = time_units_to_seconds[key]
break
time_coverage_start = time_units_start + datetime.timedelta(
seconds=t0 * factor)
time_coverage_end = time_units_start + datetime.timedelta(
seconds=t1 * factor)
## finally set values of time_coverage start and end if available
if time_coverage_start is not None:
self.dataset.SetMetadataItem('time_coverage_start',
time_coverage_start.isoformat())
if time_coverage_end is not None:
self.dataset.SetMetadataItem('time_coverage_end',
time_coverage_end.isoformat())
if 'sensor' not in gdalMetadata:
self.dataset.SetMetadataItem('sensor', 'unknown')
if 'satellite' not in gdalMetadata:
self.dataset.SetMetadataItem('satellite', 'unknown')
if 'source_type' not in gdalMetadata:
self.dataset.SetMetadataItem('source_type', 'unknown')
if 'platform' not in gdalMetadata:
self.dataset.SetMetadataItem('platform', 'unknown')
if 'instrument' not in gdalMetadata:
self.dataset.SetMetadataItem('instrument', 'unknown')
self.logger.info('Use generic mapper - OK!')
def parse_time(time_string):
return utils.parse_time(time_string)
def test_parse_time_incorrect(self):
dt = parse_time('2016-01-19Z')
self.assertEqual(type(dt), datetime.datetime)
