def handler(path):
try:
# Returns metadata for girder to save it on the file model
metadata = {}
metadata['type_'] = 'vector'
dataset = ogr.Open(path)
if not dataset:
raise CannotHandleError()
metadata['driver'] = dataset.GetDriver().GetName()
metadata['layers'] = dataset.GetLayerCount()
metadata['layerInfo'] = get_layers(dataset)
layerBounds = [Polygon.from_bounds(i['nativeBounds']['left'],
i['nativeBounds']['bottom'],
i['nativeBounds']['right'],
i['nativeBounds']['top'])
for i in metadata['layerInfo']]
union = unary_union(layerBounds)
layer = dataset.GetLayer(0)
crs = layer.GetSpatialRef().ExportToProj4()
bounds = {'left': union.bounds[0], 'right': union.bounds[2],
'bottom': union.bounds[1], 'top': union.bounds[3]}
metadata['crs'] = crs
metadata['nativeBounds'] = bounds
metadata['type_'] = 'vector'
metadata['bounds'] = from_bounds_to_geojson(bounds, crs)
schema = VectorSchema()
return schema.load(metadata)
except AttributeError:
raise CannotHandleError('Ogr could not open dataset')
def handler(path):
try:
# Returns metadata for girder to save it on the file model
metadata = {}
metadata['type_'] = 'raster'
dataset = gdal.Open(path)
if dataset.GetSubDatasets():
raise CannotHandleError('Cannot handle this data type')
crs = get_projection_as_proj4(dataset)
bounds = get_bounds(dataset)
metadata['crs'] = crs
metadata['bands'] = dataset.RasterCount
metadata['bandInfo'] = get_band_info(dataset)
metadata['affine'] = list(dataset.GetGeoTransform())
metadata['width'] = dataset.RasterXSize
metadata['height'] = dataset.RasterYSize
metadata['driver'] = dataset.GetDriver().LongName
metadata['nativeBounds'] = bounds
metadata['bounds'] = from_bounds_to_geojson(bounds, crs)
schema = RasterSchema()
try:
return schema.load(metadata)
except ValidationError as e:
raise CannotHandleError(e.messages)
except AttributeError:
raise CannotHandleError('Gdal could not open dataset')
def sampleBounds():
crs = '+proj=utm +zone=10 +datum=WGS84 +units=m +no_defs '
nativeBounds = {
'left': 271785.000,
'bottom': 4345785.000,
'right': 506715.000,
'top': 4584315.000
}
return from_bounds_to_geojson(nativeBounds, crs)
def get_layer_info(layer):
metadata = {}
extent = layer.GetExtent()
crs = layer.GetSpatialRef().ExportToProj4()
bounds = {'left': extent[0], 'right': extent[1],
'bottom': extent[2], 'top': extent[3]}
metadata['crs'] = crs
metadata['nativeBounds'] = bounds
metadata['type_'] = 'vector'
metadata['bounds'] = from_bounds_to_geojson(bounds, crs)
metadata['featureCount'] = layer.GetFeatureCount()
definition = layer.GetLayerDefn()
count = definition.GetFieldCount()
metadata['geomType'] = ogr.GeometryTypeToName(definition.GetGeomType())
metadata['layerFields'] = [get_field_info(definition.GetFieldDefn(i)) for i in range(count)]
return metadata
def get_subdataset_info(subDataset):
dataset = gdal.Open(subDataset)
crs = get_projection_as_proj4(
dataset) or '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs '
metadata = {}
bounds = get_bounds(dataset)
metadata['crs'] = crs
metadata['type_'] = 'grid'
metadata['name'] = dataset.GetDescription()
metadata['driver'] = dataset.GetDriver().LongName
metadata['nativeBounds'] = bounds
metadata['bounds'] = from_bounds_to_geojson(bounds, crs)
metadata['affine'] = list(dataset.GetGeoTransform())
metadata['width'] = dataset.RasterXSize
metadata['height'] = dataset.RasterYSize
return metadata
def handler(path):
# Returns metadata for girder to save it on the file model
metadata = {}
metadata['type_'] = 'raster'
dataset = gdal.Open(path)
crs = get_projection_as_proj4(dataset)
bounds = get_bounds(dataset)
metadata['crs'] = crs
metadata['bands'] = dataset.RasterCount
metadata['bandInfo'] = get_band_info(dataset)
metadata['affine'] = list(dataset.GetGeoTransform())
metadata['width'] = dataset.RasterXSize
metadata['height'] = dataset.RasterYSize
metadata['driver'] = dataset.GetDriver().LongName
metadata['nativeBounds'] = bounds
metadata['bounds'] = from_bounds_to_geojson(bounds, crs)
schema = GeotiffSchema()
return schema.load(metadata)
def handler(path):
try:
# Returns metadata for girder to save it on the file model
metadata = {}
metadata['type_'] = 'grid'
main_dataset = gdal.Open(path)
try:
gdal.Open(main_dataset.GetSubDatasets()[0][0])
except IndexError:
raise CannotHandleError('Does not have subdatasets')
dataset = gdal.Open(main_dataset.GetSubDatasets()[0][0])
crs = get_projection_as_proj4(
dataset) or '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs '
metadata = {}
metadata['subDatasets'] = get_subdatasets(main_dataset)
subDatasetBounds = [
Polygon.from_bounds(i['nativeBounds']['left'],
i['nativeBounds']['bottom'],
i['nativeBounds']['right'],
i['nativeBounds']['top'])
for i in metadata['subDatasets']
]
union = unary_union(subDatasetBounds)
bounds = {
'left': union.bounds[0],
'right': union.bounds[2],
'bottom': union.bounds[1],
'top': union.bounds[3]
}
metadata['crs'] = crs
metadata['type_'] = 'grid'
metadata['driver'] = dataset.GetDriver().LongName
metadata['nativeBounds'] = bounds
metadata['bounds'] = from_bounds_to_geojson(bounds, crs)
schema = GridSchema()
return schema.load(metadata)
except AttributeError:
raise CannotHandleError('Gdal could not open dataset')
def handler(path, girder_item, girder_file):
if ".obj" not in girder_file['name'] and \
".OBJ" not in girder_file['name']:
raise CannotHandleError(girder_file['name'] + ' is not an OBJ file')
try:
jsonItem = Item().findOne({
'name':
girder_file['name'].replace("obj", "json"),
'folderId':
girder_item['folderId']
})
jsonFile = [i for i in Item().childFiles(jsonItem, limit=1)][0]
jsonContent = json.loads(''.join(
list(File().download(jsonFile, headers=False)())))
projectionParams = jsonContent['scenes'][0]['coordinate_system'][
'parameters']
ellps = projectionParams[0].upper()
m = re.compile('(utm) zone ([0-9]+)N',
re.IGNORECASE).match(projectionParams[1])
proj = m.group(1).lower()
zone = m.group(2)
sourceSrs = Proj(proj=proj, zone=zone, ellps=ellps).srs
offset = [
projectionParams[2], projectionParams[3], projectionParams[4]
]
bounds = getOBJBounds(path, offset)
geoJsonBounds = from_bounds_to_geojson(bounds, sourceSrs)
geometa = {
'crs': sourceSrs,
'nativeBounds': bounds,
'bounds': geoJsonBounds,
'type_': 'vector',
'driver': 'OBJ'
}
schema = OBJSchema()
return schema.load(geometa)
except Exception:
raise CannotHandleError('Failed to add geometa to OBJ file' +
girder_file['name'])
