示例#1
0
文件: table.py 项目: imclab/blaze
    def __init__(self, obj, dshape=None, metadata=None, layout=None,
            params=None):


        # Datashape
        # ---------

        if isinstance(dshape, basestring):
            dshape = _dshape(dshape)

        if not dshape:
            # No explicit dshape provided. Infer it from the source.
            # if the source is another blaze array just use its shape,
            # otherwile let the provider infer its data_shape
            if isinstance(obj, Array):
                dshape = obj.datashape
            else:
                dshape = CArraySource.infer_datashape(obj)
        else:
            # The user overlayed their custom dshape on this
            # data, check if it makes sense
            CArraySource.check_datashape(obj, given_dshape=dshape)

        self._datashape = dshape

        # Values
        # ------
        # Mimic NumPy behavior in that we have a variety of
        # possible arguments to the first argument which result
        # in different behavior for the values.
        if isinstance(obj, ByteProvider):
            self.data = obj
        elif isinstance(obj, Array):
            self.data = CArraySource(obj.data,
                                     dshape=dshape,
                                     params=params)
        else:
            self.data = CArraySource(obj, dshape=dshape, params=params)

        # children graph nodes
        self.children = []

        self.space = Space(self.data)

        # Layout
        # ------

        if layout:
            self._layout = layout
        elif not layout:
            self._layout = self.data.default_layout()

        # Metadata
        # --------

        self._metadata  = NDArray._metaheader + (metadata or [])

        # Parameters
        # ----------
        self.params = params
示例#2
0
    def __init__(self,
                 obj,
                 dshape=None,
                 metadata=None,
                 layout=None,
                 params=None):

        # Datashape
        # ---------

        if isinstance(dshape, basestring):
            dshape = _dshape(dshape)

        if not dshape:
            # The user just passed in a raw data source, try
            # and infer how it should be layed out or fail
            # back on dynamic types.
            self._datashape = dshape = CArraySource.infer_datashape(obj)
        else:
            # The user overlayed their custom dshape on this
            # data, check if it makes sense
            CArraySource.check_datashape(obj, given_dshape=dshape)
            self._datashape = dshape

        # Values
        # ------
        # Mimic NumPy behavior in that we have a variety of
        # possible arguments to the first argument which result
        # in different behavior for the values.

        if isinstance(obj, CArraySource):
            self.data = obj
        else:
            self.data = CArraySource(obj, params)

        # children graph nodes
        self.children = []

        self.space = Space(self.data)

        # Layout
        # ------

        if layout:
            self._layout = layout
        elif not layout:
            self._layout = ChunkedL(self.data, cdimension=0)

        # Metadata
        # --------

        self._metadata = NDArray._metaheader + (metadata or [])

        # Parameters
        # ----------
        self.params = params
示例#3
0
    def __init__(self, obj, dshape=None, metadata=None, layout=None,
            params=None):

        # Datashape
        # ---------

        if isinstance(dshape, basestring):
            dshape = _dshape(dshape)

        if not dshape:
            # The user just passed in a raw data source, try
            # and infer how it should be layed out or fail
            # back on dynamic types.
            self._datashape = dshape = CArraySource.infer_datashape(obj)
        else:
            # The user overlayed their custom dshape on this
            # data, check if it makes sense
            CArraySource.check_datashape(obj, given_dshape=dshape)
            self._datashape = dshape

        # Values
        # ------
        # Mimic NumPy behavior in that we have a variety of
        # possible arguments to the first argument which result
        # in different behavior for the values.

        if isinstance(obj, CArraySource):
            self.data = obj
        else:
            self.data = CArraySource(obj, params)

        # children graph nodes
        self.children = []

        self.space = Space(self.data)

        # Layout
        # ------

        if layout:
            self._layout = layout
        elif not layout:
            self._layout = ChunkedL(self.data, cdimension=0)

        # Metadata
        # --------

        self._metadata  = NDArray._metaheader + (metadata or [])

        # Parameters
        # ----------
        self.params = params
示例#4
0
    def __init__(self,
                 obj,
                 dshape=None,
                 metadata=None,
                 layout=None,
                 params=None):

        # Datashape
        # ---------

        if isinstance(dshape, basestring):
            dshape = _dshape(dshape)

        if not dshape:
            # No explicit dshape provided. Infer it from the source.
            # if the source is another blaze array just use its shape,
            # otherwile let the provider infer its data_shape
            if isinstance(obj, Array):
                dshape = obj.datashape
            else:
                dshape = CArraySource.infer_datashape(obj)
        else:
            # The user overlayed their custom dshape on this
            # data, check if it makes sense
            CArraySource.check_datashape(obj, given_dshape=dshape)

        self._datashape = dshape

        # Values
        # ------
        # Mimic NumPy behavior in that we have a variety of
        # possible arguments to the first argument which result
        # in different behavior for the values.
        if isinstance(obj, ByteProvider):
            self.data = obj
        elif isinstance(obj, Array):
            self.data = CArraySource(obj.data, dshape=dshape, params=params)
        else:
            self.data = CArraySource(obj, dshape=dshape, params=params)

        # children graph nodes
        self.children = []

        self.space = Space(self.data)

        # Layout
        # ------

        if layout:
            self._layout = layout
        elif not layout:
            self._layout = self.data.default_layout()

        # Metadata
        # --------

        self._metadata = NDArray._metaheader + (metadata or [])

        # Parameters
        # ----------
        self.params = params