Frame (Deedle) | Deedle

Frame Module

Namespace: Deedle.Parquet
Assembly: Deedle.Parquet.dll

Parquet-specific functions on Deedle Frame values. Open Deedle.Parquet and then call these as Frame.readParquet, Frame.writeParquet, etc.

Functions and values

Function or value	Description
`readParquet path` Full Usage: `readParquet path` Parameters: path : `string` Returns: `Frame<int, string>`	Read a Parquet file into a Deedle `Frame<int,string>`. Row keys are 0-based integers. Parquet null values become Deedle missing values. Files with multiple row groups are concatenated into a single frame. path : `string` Returns: `Frame<int, string>`
`readParquetStream stream` Full Usage: `readParquetStream stream` Parameters: stream : `Stream` Returns: `Frame<int, string>`	Read a Parquet stream into a Deedle `Frame<int,string>`. The stream must be seekable. All row groups are concatenated into a single frame. stream : `Stream` Returns: `Frame<int, string>`
`readParquetWithIndex path` Full Usage: `readParquetWithIndex path` Parameters: path : `string` Returns: `Frame<string, string>`	Read a Parquet file that was written with `Frame.writeParquetWithIndex`, restoring the original string row keys. If no `__index__` column is present, returns a frame with 0-based integer row keys converted to strings. path : `string` Returns: `Frame<string, string>`
`writeParquet path frame` Full Usage: `writeParquet path frame` Parameters: path : `string` frame : `Frame<'R, string>` Type parameters: 'R (requires equality)	Write a Deedle `Frame` to a Parquet file. path : `string` frame : `Frame<'R, string>`
`writeParquetStream stream frame` Full Usage: `writeParquetStream stream frame` Parameters: stream : `Stream` frame : `Frame<'R, string>` Type parameters: 'R (requires equality)	Write a Deedle `Frame` to a Parquet stream. The stream must be seekable. The stream is left open after writing. stream : `Stream` frame : `Frame<'R, string>`
`writeParquetWithIndex path frame` Full Usage: `writeParquetWithIndex path frame` Parameters: path : `string` frame : `Frame<'R, string>` Type parameters: 'R (requires equality)	Write a Deedle `Frame` to a Parquet file, storing row keys in a special `__index__` column so they can be restored on read. Row keys are serialised via `ToString()`. path : `string` frame : `Frame<'R, string>`