def grassAsciiRasterToWKB(cls, session, grassRasterPath, srid, noData=0):
        """
        Load GRASS ASCII rasters directly using the makeSingleBandWKBRaster method. Do this to eliminate the raster2pgsql
        dependency.
        """
        # Constants
        NUM_HEADER_LINES = 6

        # Defaults
        north = 0.0
        east = 0.0
        west = 0.0
        rows = 0
        columns = 0

        if grassRasterPath is not None:
            # If the path to the file is given, open the file and extract contents.
            with open(grassRasterPath, 'r') as f:
                rasterLines = f.readlines()
        else:
            print("RASTER LOAD ERROR: Must provide the path the raster.")
            raise

        # Extract the headers from the file and derive metadata
        for line in rasterLines[0:NUM_HEADER_LINES]:
            spline = line.split()

            if 'north' in spline[0].lower():
                north = float(spline[1])
            elif 'east' in spline[0].lower():
                east = float(spline[1])
            elif 'west' in spline[0].lower():
                west = float(spline[1])
            elif 'rows' in spline[0].lower():
                rows = int(spline[1])
            elif 'cols' in spline[0].lower():
                columns = int(spline[1])

        # Define raster metadata from headers
        width = columns
        height = rows
        upperLeftX = west
        upperLeftY = north
        cellSizeX = int(abs(west - east) / columns)
        cellSizeY = -1 * cellSizeX

        # Assemble the data array string
        dataArrayList = []

        for line in rasterLines[NUM_HEADER_LINES:len(rasterLines)]:
            dataArrayList.append('[{0}]'.format(', '.join(line.split())))

        dataArrayString = '[{0}]'.format(', '.join(dataArrayList))

        # Create well known binary raster
        wellKnownBinary = cls.makeSingleBandWKBRaster(session=session,
                                                      width=width, height=height,
                                                      upperLeftX=upperLeftX, upperLeftY=upperLeftY,
                                                      cellSizeX=cellSizeX, cellSizeY=cellSizeY,
                                                      skewX=0, skewY=0,
                                                      srid=srid,
                                                      dataArray=dataArrayString,
                                                      noDataValue=noData)

        return wellKnownBinary