def test_get_default_fill_value(self):
self.assertEqual(-127, DefaultData.get_default_fill_value(np.int8))
self.assertEqual(255, DefaultData.get_default_fill_value(np.uint8))
self.assertEqual(-32767, DefaultData.get_default_fill_value(np.int16))
self.assertEqual(np.uint16(-1),
DefaultData.get_default_fill_value(np.uint16))
self.assertEqual(-2147483647,
DefaultData.get_default_fill_value(np.int32))
self.assertEqual(4294967295,
DefaultData.get_default_fill_value(np.uint32))
self.assertEqual(-9223372036854775806,
DefaultData.get_default_fill_value(np.int64))
self.assertEqual(np.float32(9.96921E36),
DefaultData.get_default_fill_value(np.float32))
self.assertEqual(9.969209968386869E36,
DefaultData.get_default_fill_value(np.float64))
def _add_fill_value_attributes(variable, target_variable_name):
if "brightness_temperature" in target_variable_name:
offset = variable.attrs["OFFSET"]
scale_factor = variable.attrs["SCALE_FACTOR"]
variable.attrs["_FillValue"] = -32768.0 * scale_factor + offset
return
if "insitu." in target_variable_name:
variable.attrs["_FillValue"] = -32768
return
if "source" in variable.attrs:
variable.attrs["_FillValue"] = 2e20
return
if not "FillValue" in variable.attrs:
default_fill = DefaultData.get_default_fill_value(variable.dtype)
scale_factor, offset = MmdReader.get_scale_and_offset(variable)
if scale_factor != 1.0 or offset != 0.0:
variable.attrs["_FillValue"] = default_fill * scale_factor + offset
else:
variable.attrs["_FillValue"] = default_fill
return
def _create_vector_uint8_variable(num_matchups):
array = DefaultData.create_default_vector(num_matchups, np.uint8)
variable = Variable(["matchup"], array)
variable.attrs["_FillValue"] = DefaultData.get_default_fill_value(
np.uint8)
return variable
def test_add_fill_value_attributes_no_scaling_no_fill_value_float32(self):
variable = self._create_variable(np.float32)
MmdReader._add_fill_value_attributes(variable, "don't care")
self.assertEqual(DefaultData.get_default_fill_value(np.float32),
variable.attrs["_FillValue"])