ArrowNumpySchema¶

class lsst.daf.butler.formatters.parquet.ArrowNumpySchema(numpy_dtype: np.dtype)¶

Wrapper class for a schema for a numpy ndarray.

Parameters:	numpy_dtype : `numpy.dtype` Numpy dtype to convert.

Attributes Summary

Methods Summary

`from_arrow`(schema)	Convert an arrow schema into an `ArrowNumpySchema`.
`to_arrow_astropy_schema`()	Convert to an `ArrowAstropySchema`.
`to_arrow_schema`()	Convert to a `pyarrow.Schema`.
`to_dataframe_schema`()	Convert to a `DataFrameSchema`.

Attributes Documentation

Methods Documentation

classmethod from_arrow(schema: pyarrow.lib.Schema) → lsst.daf.butler.formatters.parquet.ArrowNumpySchema¶

Convert an arrow schema into an ArrowNumpySchema.

Parameters:	schema : `pyarrow.Schema` Pyarrow schema to convert.
Returns:	numpy_schema : `ArrowNumpySchema` Converted arrow numpy schema.

to_arrow_astropy_schema() → lsst.daf.butler.formatters.parquet.ArrowAstropySchema¶

Returns:	astropy_schema : `ArrowAstropySchema` Converted arrow astropy schema.

to_arrow_schema() → pyarrow.lib.Schema¶

Convert to a pyarrow.Schema.

Returns:	arrow_schema : `pyarrow.Schema` Converted pyarrow schema.

to_dataframe_schema() → lsst.daf.butler.formatters.parquet.DataFrameSchema¶

Returns:	dataframe_schema : `DataFrameSchema` Converted dataframe schema.