Source code for epygram.PointField

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from epygram.base import Field, FieldValidity
from epygram import PointGeometry, epygramError
import numpy



class PointField(Field):
    """
    0-Dimension (point) field class.
    A field is defined by its identifier 'fid',
    its data, its geometry, and its validity.
    """
    
    _collector = ('field',)
    _footprint = dict(
        attr = dict(
            geometry = dict(type = PointGeometry),
            validity = dict(
                type = FieldValidity,
                optional = True,
                default = FieldValidity()),
            processtype = dict(
                optional = True,
                info = "Generating process.")
        )
    )

    def setdata(self, data):
        """
        Sets data, checking it to be scalar or 0D array.
        """

        if numpy.shape(data) not in ((1,), ()):
            raise epygramError("data must be scalar or 0D array.")
        super(PointField, self).setdata(data)