#
# Implements IGridData for use by native Python clients to the Data Access
# Framework.
#
#
# SOFTWARE HISTORY
#
# Date Ticket# Engineer Description
# ------------ ---------- ----------- --------------------------
# 06/03/13 #2023 dgilling Initial Creation.
# 10/13/16 #5916 bsteffen Correct grid shape, allow lat/lon
# 11/10/16 #5900 bsteffen Correct grid shape
# to be requested by a delegate
#
#
import numpy
import warnings
import six
from awips.dataaccess import IGridData
from awips.dataaccess import PyData
NO_UNIT_CONVERT_WARNING = """
The ability to unit convert grid data is not currently available in this version of the Data Access Framework.
"""
[docs]class PyGridData(IGridData, PyData.PyData):
def __init__(self, gridDataRecord, nx, ny, latLonGrid=None, latLonDelegate=None):
PyData.PyData.__init__(self, gridDataRecord)
nx = nx
ny = ny
self.__parameter = gridDataRecord.getParameter()
self.__unit = gridDataRecord.getUnit()
self.__gridData = numpy.reshape(numpy.array(gridDataRecord.getGridData()), (ny, nx))
self.__latLonGrid = latLonGrid
self.__latLonDelegate = latLonDelegate
[docs] def getParameter(self):
return self.__parameter
[docs] def getUnit(self):
if six.PY2:
return self.__unit
if self.__unit is not None and not isinstance(self.__unit, str):
return self.__unit.decode('utf-8')
return self.__unit
[docs] def getRawData(self, unit=None):
# TODO: Find a proper python library that deals will with numpy and
# javax.measure style unit strings and hook it in to this method to
# allow end-users to perform unit conversion for grid data.
if unit is not None:
warnings.warn(NO_UNIT_CONVERT_WARNING, stacklevel=2)
return self.__gridData
[docs] def getLatLonCoords(self):
if self.__latLonGrid is not None:
return self.__latLonGrid
elif self.__latLonDelegate is not None:
return self.__latLonDelegate()
return self.__latLonGrid