def run(self, *args, **kwargs):
""" Run the command: Acquire USGS DEM data.
Arguments:
coverage -- string Source dataset from which DEM tile should be extracted.
outfile -- string The name of the DEM file to be written. File extension ".tif" will be added.
demResolution list<float>[2] Two floating point numbers representing the desired X and Y output resolution of soil property raster maps; unit: meters.
srs -- string Target spatial reference system of output, in EPSG:num format.
verbose -- boolean Produce verbose output. Default: False.
overwrite -- boolean Overwrite existing output. Default: False.
"""
coverage = kwargs.get('coverage', self.DEFAULT_COVERAGE)
outfile = kwargs.get('outfile', None)
demResolution = kwargs.get('demResolution', None)
srs = kwargs.get('srs', None)
verbose = kwargs.get('verbose', False)
overwrite = kwargs.get('overwrite', False)
self.checkMetadata()
bbox = bboxFromString(self.studyArea['bbox_wgs84'])
if not outfile:
outfile = 'DEM'
demFilename = "%s.tif" % (outfile)
demResolutionX = demResolutionY = None
if demResolution:
demResolutionX = demResolution[0]
demResolutionY = demResolution[1]
if srs:
if not isValidSrs(srs):
msg = "ERROR: '%s' is not a valid spatial reference. Spatial reference must be of the form 'EPSG:XXXX', e.g. 'EPSG:32617'. For more information, see: http://www.spatialreference.org/" % (srs,)
raise RunException(msg)
else:
# Default for UTM
(centerLon, centerLat) = calculateBoundingBoxCenter(bbox)
(utmZone, isNorth) = getUTMZoneFromCoordinates(centerLon, centerLat)
srs = getEPSGStringForUTMZone(utmZone, isNorth)
try:
(dataFetched, urlFetched) = ecohydrolib.usgs.demwcs.getDEMForBoundingBox(self.context.config,
self.context.projectDir,
demFilename,
bbox,
srs,
coverage=coverage,
resx=demResolutionX,
resy=demResolutionY,
scale=0.01,
overwrite=overwrite,
verbose=verbose,
outfp=self.outfp)
except Exception as e:
traceback.print_exc(file=self.outfp)
raise RunException(e)
if not dataFetched:
raise RunException("Failed to download DEM data from URL {0}".format(urlFetched))
# Write metadata entries
cmdline = GenericMetadata.getCommandLine()
# Write metadata
demFilepath = os.path.join(self.context.projectDir, demFilename)
demSrs = getSpatialReferenceForRaster(demFilepath)
GenericMetadata.writeStudyAreaEntry(self.context, 'dem_res_x', demSrs[0])
GenericMetadata.writeStudyAreaEntry(self.context, 'dem_res_y', demSrs[1])
GenericMetadata.writeStudyAreaEntry(self.context, 'dem_srs', srs)
# Get rows and columns for DEM
(columns, rows) = getDimensionsForRaster(demFilepath)
GenericMetadata.writeStudyAreaEntry(self.context, 'dem_columns', columns)
GenericMetadata.writeStudyAreaEntry(self.context, 'dem_rows', rows)
# Write provenance
asset = AssetProvenance(GenericMetadata.MANIFEST_SECTION)
asset.name = 'dem'
asset.dcIdentifier = demFilename
asset.dcSource = urlFetched
asset.dcTitle = "Digital Elevation Model ({0})".format(coverage)
asset.dcPublisher = 'U.S. Geological Survey'
asset.dcDescription = cmdline
asset.processingNotes = "Elevation values rescaled from centimeters to meters. "
asset.processingNotes += "Spatial grid resampled to {srs} with X resolution {xres} and Y resolution {yres}."
asset.processingNotes = asset.processingNotes.format(srs=srs,
xres=demSrs[0],
yres=demSrs[1])
asset.writeToMetadata(self.context)
# Write processing history
GenericMetadata.appendProcessingHistoryItem(self.context, cmdline)
os.unlink(rasterFilepath)
sys.exit(
textwrap.fill(
"ERROR: Raster type %s must be the same extent as DEM" %
(GenericMetadata.RASTER_TYPE_STREAM_BURNED_DEM, )))
if not force:
# Extents to not match, roll back and bail out
os.unlink(rasterFilepath)
sys.exit(
textwrap.fill(
"ERROR: Extent of raster dataset %s does not match extent of DEM in project directory %s. Use --force to override."
) % (rasterFilename, context.projectDir))
# Write metadata
if GenericMetadata.RASTER_TYPE_LC == args.type:
GenericMetadata.writeStudyAreaEntry(context, "landcover_type", "custom")
# Write provenance
asset = AssetProvenance(GenericMetadata.MANIFEST_SECTION)
asset.name = args.type
asset.dcIdentifier = rasterFilename
asset.dcSource = "file://%s" % (inRasterPath, )
asset.dcTitle = args.type
asset.dcPublisher = publisher
asset.dcDescription = cmdline
asset.processingNotes = processingNotes
asset.writeToMetadata(context)
# Write processing history
GenericMetadata.appendProcessingHistoryItem(context, cmdline)
def run(self, *args, **kwargs):
""" Run the command: Acquire USGS DEM data.
Arguments:
coverage -- string Source dataset from which DEM tile should be extracted.
outfile -- string The name of the DEM file to be written. File extension ".tif" will be added.
demResolution list<float>[2] Two floating point numbers representing the desired X and Y output resolution of soil property raster maps; unit: meters.
srs -- string Target spatial reference system of output, in EPSG:num format.
verbose -- boolean Produce verbose output. Default: False.
overwrite -- boolean Overwrite existing output. Default: False.
"""
coverage = kwargs.get('coverage', self.DEFAULT_COVERAGE)
outfile = kwargs.get('outfile', None)
demResolution = kwargs.get('demResolution', None)
srs = kwargs.get('srs', None)
verbose = kwargs.get('verbose', False)
overwrite = kwargs.get('overwrite', False)
self.checkMetadata()
bbox = bboxFromString(self.studyArea['bbox_wgs84'])
if not outfile:
outfile = 'DEM'
demFilename = "%s.tif" % (outfile)
demResolutionX = demResolutionY = None
if demResolution:
demResolutionX = demResolution[0]
demResolutionY = demResolution[1]
if srs:
if not isValidSrs(srs):
msg = "ERROR: '%s' is not a valid spatial reference. Spatial reference must be of the form 'EPSG:XXXX', e.g. 'EPSG:32617'. For more information, see: http://www.spatialreference.org/" % (srs,)
raise RunException(msg)
else:
# Default for UTM
(centerLon, centerLat) = calculateBoundingBoxCenter(bbox)
(utmZone, isNorth) = getUTMZoneFromCoordinates(centerLon, centerLat)
srs = getEPSGStringForUTMZone(utmZone, isNorth)
try:
(dataFetched, urlFetched) = ecohydrolib.usgs.demwcs.getDEMForBoundingBox(self.context.config,
self.context.projectDir,
demFilename,
bbox,
srs,
coverage=coverage,
resx=demResolutionX,
resy=demResolutionY,
scale=0.01,
overwrite=overwrite,
verbose=verbose,
outfp=self.outfp)
except Exception as e:
traceback.print_exc(file=self.outfp)
raise RunException(e)
if not dataFetched:
raise RunException("Failed to download DEM data from URL {0}".format(urlFetched))
# Write metadata entries
cmdline = GenericMetadata.getCommandLine()
# Write metadata
demFilepath = os.path.join(self.context.projectDir, demFilename)
demSrs = getSpatialReferenceForRaster(demFilepath)
GenericMetadata.writeStudyAreaEntry(self.context, 'dem_res_x', demSrs[0])
GenericMetadata.writeStudyAreaEntry(self.context, 'dem_res_y', demSrs[1])
GenericMetadata.writeStudyAreaEntry(self.context, 'dem_srs', srs)
# Get rows and columns for DEM
(columns, rows) = getDimensionsForRaster(demFilepath)
GenericMetadata.writeStudyAreaEntry(self.context, 'dem_columns', columns)
GenericMetadata.writeStudyAreaEntry(self.context, 'dem_rows', rows)
# Write provenance
asset = AssetProvenance(GenericMetadata.MANIFEST_SECTION)
asset.name = 'dem'
asset.dcIdentifier = demFilename
asset.dcSource = urlFetched
asset.dcTitle = "Digital Elevation Model ({0})".format(coverage)
asset.dcPublisher = 'U.S. Geological Survey'
asset.dcDescription = cmdline
asset.processingNotes = "Elevation values rescaled from centimeters to meters. "
asset.processingNotes += "Spatial grid resampled to {srs} with X resolution {xres} and Y resolution {yres}."
asset.processingNotes = asset.processingNotes.format(srs=srs,
xres=demSrs[0],
yres=demSrs[1])
asset.writeToMetadata(self.context)
# Write processing history
GenericMetadata.appendProcessingHistoryItem(self.context, cmdline)
sys.stdout.flush()
copyRasterToGeoTIFF(context.config, context.projectDir, inRasterPath, rasterFilename)
sys.stdout.write('done\n')
# Make sure extent of resampled raster is the same as the extent of the DEM
newRasterMetadata = getDimensionsForRaster(rasterFilepath)
if (not force) and ( (newRasterMetadata[0] != demColumns) or (newRasterMetadata[1] != demRows) ):
# Extents to not match, roll back and bail out
os.unlink(rasterFilepath)
sys.exit(textwrap.fill("ERROR: Extent of raster dataset %s does not match extent of DEM in project directory %s. Use --force to override.") %
(rasterFilename, context.projectDir))
# Write metadata
if GenericMetadata.RASTER_TYPE_LC == args.type:
GenericMetadata.writeStudyAreaEntry(context, "landcover_type", "custom")
# Write provenance
asset = AssetProvenance(GenericMetadata.MANIFEST_SECTION)
asset.name = args.type
asset.dcIdentifier = rasterFilename
asset.dcSource = "file://%s" % (inRasterPath,)
asset.dcTitle = args.type
asset.dcPublisher = publisher
asset.dcDescription = cmdline
asset.processingNotes = processingNotes
asset.writeToMetadata(context)
# Write processing history
GenericMetadata.appendProcessingHistoryItem(context, cmdline)
