DataFrame

public struct DataFrame

A pandas-inspired dataframe. Dataframe is a tabular data representation. This particular Dataframe implementation is most useful to implement data feeder pipeline. You need some transformations so some text or images can be transformed into tensors for a model to consume. Dataframe can be used to implement that pipeline.

  • List of columns within this dataframe.

    Declaration

    Swift

    public var columns: [String] { get }
  • Initialize a dataframe from a sequence of objects.

    Declaration

    Swift

    public init<S>(from sequence: S, name: String = "0") where S : Sequence
  • Shuffle the dataframe.

    Declaration

    Swift

    public mutating func shuffle()
  • Undocumented

    Declaration

    Swift

    public subscript(firstIndex: String, secondIndex: String, indices: String...) -> ManyUntypedSeries { get }
  • Undocumented

    Declaration

    Swift

    public subscript<S>(indices: S) -> ManyUntypedSeries where S : Sequence, S.Element == String { get }
  • Undocumented

    Declaration

    Swift

    public subscript(index: String) -> UntypedSeries? { get set }
  • Undocumented

    Declaration

    Swift

    public subscript<Element>(index: String, type: Element.Type) -> TypedSeries<Element> { get }
  • How many rows in the dataframe.

    Declaration

    Swift

    public var count: Int { get }
  • Load CSV file into dataframe. This may use multi-threads when available.

    Declaration

    Swift

    public init?(
      fromCSV filePath: String, automaticUseHeader: Bool = true, delimiter: String = ",",
      quotation: String = "\""
    )

    Parameters

    fromCSV

    The file path for the CSV file.

    automaticUseHeader

    Whether the first line will be the header or not.

    delimiter

    What’s the delimiter for the CSV file, default ,

    quotation

    What’s the quotation mark for the CSV file, default “

  • Undocumented

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    Declaration

    Swift

    public struct UntypedSeries : DataSeries
  • Undocumented

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    Declaration

    Swift

    public struct TypedSeries<Element> : DataSeries
  • Undocumented

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    Declaration

    Swift

    public struct ManyUntypedSeries : DataSeries
  • Result represent a tuple of tensors that you can access either by name or by tuple index.

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    Declaration

    Swift

    public struct ManyUntypedSeriesTensorResult