greenwich/raster.py
def get_offset(self, envelope):
        """Returns a 4-tuple pixel window (x_offset, y_offset, x_size, y_size).

        Arguments:
        envelope -- coordinate extent tuple or Envelope
        """
        if isinstance(envelope, collections.Sequence):
            envelope = Envelope(envelope)
        if not (self.envelope.contains(envelope) or
                self.envelope.intersects(envelope)):
            raise ValueError('Envelope does not intersect with this extent')
        coords = self.affine.transform((envelope.ul, envelope.lr))
        nxy = [(min(dest, size) - origin) or 1
               for size, origin, dest in zip(self.size, *coords)]
        return coords[0] + tuple(nxy)
def get_offset(self, envelope):
        """Returns a 4-tuple pixel window (x_offset, y_offset, x_size, y_size).

        Arguments:
        envelope -- coordinate extent tuple or Envelope
        """
        if isinstance(envelope, collections.Sequence):
            envelope = Envelope(envelope)
        if not (self.envelope.contains(envelope) or
                self.envelope.intersects(envelope)):
            raise ValueError('Envelope does not intersect with this extent')
        coords = self.affine.transform((envelope.ul, envelope.lr))
        nxy = [(min(dest, size) - origin) or 1
               for size, origin, dest in zip(self.size, *coords)]
        return coords[0] + tuple(nxy)
def get_offset ( self , envelope ) : if isinstance ( envelope , collections . Sequence ) : envelope = Envelope ( envelope ) if not ( self . envelope . contains ( envelope ) or self . envelope . intersects ( envelope ) ) : raise ValueError ( 'Envelope does not intersect with this extent' ) coords = self . affine . transform ( ( envelope . ul , envelope . lr ) ) nxy = [ ( min ( dest , size ) - origin ) or 1 for size , origin , dest in zip ( self . size , * coords ) ] return coords [ 0 ] + tuple ( nxy )
Returns a 4-tuple pixel window (x_offset, y_offset, x_size, y_size).

        Arguments:
        envelope -- coordinate extent tuple or Envelope
Returns a 4 - tuple pixel window ( x_offset y_offset x_size y_size ) .