def get_raster(layer,
bbox,
path=None,
update_cache=False,
check_modified=False,
mosaic=False):
"""downloads National Elevation Dataset raster tiles that cover the given bounding box
for the specified data layer.
Parameters
----------
layer : str
dataset layer name. (see get_available_layers for list)
bbox : (sequence of float|str)
bounding box of in geographic coordinates of area to download tiles
in the format (min longitude, min latitude, max longitude, max latitude)
path : ``None`` or path
if ``None`` default path will be used
update_cache: ``True`` or ``False`` (default)
if ``False`` and output file already exists use it.
check_modified: ``True`` or ``False`` (default)
if tile exists in path, check if newer file exists online and download if available.
mosaic: ``True`` or ``False`` (default)
if ``True``, mosaic and clip downloaded tiles to the extents of the bbox provided. Requires
rasterio package and GDAL.
Returns
-------
raster_tiles : geojson FeatureCollection
metadata as a FeatureCollection. local url of downloaded data is in feature['properties']['file']
"""
_check_layer(layer)
raster_tiles = _download_tiles(get_raster_availability(layer, bbox),
path=path,
check_modified=check_modified)
if mosaic:
if path is None:
path = os.path.join(util.get_ulmo_dir(), DEFAULT_FILE_PATH)
util.mkdir_if_doesnt_exist(os.path.join(path, 'by_boundingbox'))
xmin, ymin, xmax, ymax = [float(n) for n in bbox]
uid = util.generate_raster_uid(layer, xmin, ymin, xmax, ymax)
output_path = os.path.join(path, 'by_boundingbox', uid + '.tif')
if os.path.isfile(output_path) and not update_cache:
return output_path
raster_files = [
tile['properties']['file'] for tile in raster_tiles['features']
]
util.mosaic_and_clip(raster_files, xmin, ymin, xmax, ymax, output_path)
return [output_path]
return raster_tiles
def get_raster(product_key,
bbox,
fmt=None,
path=None,
check_modified=False,
mosaic=False):
"""downloads National Elevation Dataset raster tiles that cover the given bounding box
for the specified data layer.
Parameters
----------
product_key : str
dataset name. (see get_available_datasets for list)
bbox : (sequence of float|str)
bounding box of in geographic coordinates of area to download tiles
in the format (min longitude, min latitude, max longitude, max latitude)
fmt : ``None`` or str
available formats vary in different datasets. If ``None``, preference will be given
to geotiff and then img, followed by whatever fmt is available
path : ``None`` or path
if ``None`` default path will be used
update_cache: ``True`` or ``False`` (default)
if ``False`` then tiles will not be re-downloaded if they exist in the path
check_modified: ``True`` or ``False`` (default)
if tile exists in path, check if newer file exists online and download if available.
mosaic: ``True`` or ``False`` (default)
if ``True``, mosaic and clip downloaded tiles to the extents of the bbox provided. Requires
rasterio package and GDAL.
Returns
-------
raster_tiles : geojson FeatureCollection
metadata as a FeatureCollection. local url of downloaded data is in feature['properties']['file']
"""
raster_tiles = _download_tiles(
get_raster_availability(product_key, bbox, fmt), path, check_modified)
if mosaic:
if path is None:
path = os.path.join(util.get_ulmo_dir(), DEFAULT_FILE_PATH)
util.mkdir_if_doesnt_exist(os.path.join(path, 'by_boundingbox'))
uid = util.generate_raster_uid(product_key, xmin, ymin, xmax, ymax)
output_path = os.path.join(path, 'by_boundingbox', uid + '.tif')
if os.path.isfile(output_path) and not update_cache:
return output_path
raster_files = [
tile['properties']['file'] for tile in raster_tiles['features']
]
util.mosaic_and_clip(raster_files, xmin, ymin, xmax, ymax, output_path)
return [output_path]
return raster_tiles
def get_raster(layer, bbox, path=None, update_cache=False,
check_modified=False, mosaic=False):
"""downloads National Elevation Dataset raster tiles that cover the given bounding box
for the specified data layer.
Parameters
----------
layer : str
dataset layer name. (see get_available_layers for list)
bbox : (sequence of float|str)
bounding box of in geographic coordinates of area to download tiles
in the format (min longitude, min latitude, max longitude, max latitude)
path : ``None`` or path
if ``None`` default path will be used
update_cache: ``True`` or ``False`` (default)
if ``False`` and output file already exists use it.
check_modified: ``True`` or ``False`` (default)
if tile exists in path, check if newer file exists online and download if available.
mosaic: ``True`` or ``False`` (default)
if ``True``, mosaic and clip downloaded tiles to the extents of the bbox provided. Requires
rasterio package and GDAL.
Returns
-------
raster_tiles : geojson FeatureCollection
metadata as a FeatureCollection. local url of downloaded data is in feature['properties']['file']
"""
_check_layer(layer)
raster_tiles = _download_tiles(get_raster_availability(layer, bbox), path=path,
check_modified=check_modified)
if mosaic:
if path is None:
path = os.path.join(util.get_ulmo_dir(), DEFAULT_FILE_PATH)
util.mkdir_if_doesnt_exist(os.path.join(path, 'by_boundingbox'))
xmin, ymin, xmax, ymax = [float(n) for n in bbox]
uid = util.generate_raster_uid(layer, xmin, ymin, xmax, ymax)
output_path = os.path.join(path, 'by_boundingbox', uid + '.tif')
if os.path.isfile(output_path) and not update_cache:
return output_path
raster_files = [tile['properties']['file'] for tile in raster_tiles['features']]
util.mosaic_and_clip(raster_files, xmin, ymin, xmax, ymax, output_path)
return [output_path]
return raster_tiles
def get_raster(product_key, bbox, fmt=None, path=None, check_modified=False, mosaic=False):
"""downloads National Elevation Dataset raster tiles that cover the given bounding box
for the specified data layer.
Parameters
----------
product_key : str
dataset name. (see get_available_datasets for list)
bbox : (sequence of float|str)
bounding box of in geographic coordinates of area to download tiles
in the format (min longitude, min latitude, max longitude, max latitude)
fmt : ``None`` or str
available formats vary in different datasets. If ``None``, preference will be given
to geotiff and then img, followed by whatever fmt is available
path : ``None`` or path
if ``None`` default path will be used
update_cache: ``True`` or ``False`` (default)
if ``False`` then tiles will not be re-downloaded if they exist in the path
check_modified: ``True`` or ``False`` (default)
if tile exists in path, check if newer file exists online and download if available.
mosaic: ``True`` or ``False`` (default)
if ``True``, mosaic and clip downloaded tiles to the extents of the bbox provided. Requires
rasterio package and GDAL.
Returns
-------
raster_tiles : geojson FeatureCollection
metadata as a FeatureCollection. local url of downloaded data is in feature['properties']['file']
"""
raster_tiles = _download_tiles(get_raster_availability(product_key, bbox, fmt),
path, check_modified)
if mosaic:
if path is None:
path = os.path.join(util.get_ulmo_dir(), DEFAULT_FILE_PATH)
util.mkdir_if_doesnt_exist(os.path.join(path, 'by_boundingbox'))
uid = util.generate_raster_uid(product_key, xmin, ymin, xmax, ymax)
output_path = os.path.join(path, 'by_boundingbox', uid + '.tif')
if os.path.isfile(output_path) and not update_cache:
return output_path
raster_files = [tile['properties']['file'] for tile in raster_tiles['features']]
util.mosaic_and_clip(raster_files, xmin, ymin, xmax, ymax, output_path)
return [output_path]
return raster_tiles
