# DataFrame A collection that arranges data in rows and columns. ``` @dynamicMemberLookup struct DataFrame ``` ## Topics ### Creating a Data Frame [`init()`](/documentation/TabularData/DataFrame/init()) Creates an empty data frame with no rows or columns. [`init(columns:)`](/documentation/TabularData/DataFrame/init(columns:)) Creates a new data frame from a sequence of columns. [`init(dictionaryLiteral:)`](/documentation/TabularData/DataFrame/init(dictionaryLiteral:)) Creates a data frame from a dictionary literal. ### Creating a Data Frame from Other Data Frames [`init(_:)`](/documentation/TabularData/DataFrame/init(_:)) Creates a new data frame with a slice of rows from another data frame. [`DataFrame.Slice`](/documentation/TabularData/DataFrame/Slice) A set of a data frame’s rows you create by using a method from a data frame instance or another data frame slice. ### Creating a Data Frame from a JSON File [`init(contentsOfJSONFile:columns:types:options:)`](/documentation/TabularData/DataFrame/init(contentsOfJSONFile:columns:types:options:)) Creates a data frame by reading a JSON file. [`init(jsonData:columns:types:options:)`](/documentation/TabularData/DataFrame/init(jsonData:columns:types:options:)) Creates a data frame by converting JSON data. [`JSONType`](/documentation/TabularData/JSONType) Represents the value types in a JSON file. [`JSONReadingOptions`](/documentation/TabularData/JSONReadingOptions) A set of JSON file-reading options. ### Creating a Data Frame from a CSV [`init(contentsOfCSVFile:columns:rows:types:options:)`](/documentation/TabularData/DataFrame/init(contentsOfCSVFile:columns:rows:types:options:)) Creates a data frame from a CSV file. [`init(csvData:columns:rows:types:options:)`](/documentation/TabularData/DataFrame/init(csvData:columns:rows:types:options:)) Creates a data frame from CSV data. [`CSVType`](/documentation/TabularData/CSVType) Represents the value types in a CSV file. [`CSVReadingOptions`](/documentation/TabularData/CSVReadingOptions) A set of CSV file-reading options. ### Creating a Data Frame from Turi Create Types [`init(contentsOfSFrameDirectory:columns:rows:)`](/documentation/TabularData/DataFrame/init(contentsOfSFrameDirectory:columns:rows:)) Creates a data frame from a Turi Create scalable data frame. [`ShapedData`](/documentation/TabularData/ShapedData) A collection type that represents multidimensional data in a data frame element. ### Inspecting a Data Frame [`shape`](/documentation/TabularData/DataFrame/shape) The number of rows and columns in the data frame. [`columns`](/documentation/TabularData/DataFrame/columns) The entire data frame as a collection of columns. [`rows`](/documentation/TabularData/DataFrame/rows-swift.property) The entire data frame as a collection of rows. [`DataFrame.Rows`](/documentation/TabularData/DataFrame/Rows-swift.struct) A collection of rows in a data frame. [`base`](/documentation/TabularData/DataFrame/base) The underlying data frame. [`containsColumn(_:_:)`](/documentation/TabularData/DataFrame/containsColumn(_:_:)) Returns a Boolean value indicating whether the data frame contains a column. ### Working with Rows and Columns ### Sorting a Data Frame [`sort(on:order:)`](/documentation/TabularData/DataFrame/sort(on:order:)-4vns7) Arranges the rows of a data frame according to a column that you select by its name. [`sort(on:_:order:)`](/documentation/TabularData/DataFrame/sort(on:_:order:)-78avw) Arranges the rows of a data frame according to a column that you select by its name and type. [`sort(on:_:by:)`](/documentation/TabularData/DataFrame/sort(on:_:by:)) Arranges the rows of a data frame according to a column that you select by its name and type, with a predicate. [`sort(on:by:)`](/documentation/TabularData/DataFrame/sort(on:by:)) Arranges the rows of a data frame according to a column that you select by its column identifier, with a predicate. [`sort(on:order:)`](/documentation/TabularData/DataFrame/sort(on:order:)-5ep7w) Arranges the rows of a data frame according to a column that you select by its column identifier. [`sort(on:_:order:)`](/documentation/TabularData/DataFrame/sort(on:_:order:)-8wrkl) Arranges the rows of a data frame according to two columns that you select by their column identifiers. [`sort(on:_:_:order:)`](/documentation/TabularData/DataFrame/sort(on:_:_:order:)) Arranges the rows of a data frame according to three columns that you select by their column identifiers. ### Summarizing a Data Frame [`summary()`](/documentation/TabularData/DataFrame/summary()) Generates a data frame that summarizes the columns of the data frame. [`summary(of:)`](/documentation/TabularData/DataFrame/summary(of:)) Generates a data frame that summarizes the columns you select by name. [`summary(ofColumns:)`](/documentation/TabularData/DataFrame/summary(ofColumns:)) Generates a data frame that summarizes the columns you select by index. [`SummaryColumnIDs`](/documentation/TabularData/SummaryColumnIDs) The summary data frame column identifiers. ### Saving a Data Frame to a CSV Format [`CSVWritingOptions`](/documentation/TabularData/CSVWritingOptions) A set of CSV file-writing options. ### Describing a Data Frame [`description`](/documentation/TabularData/DataFrame/description) A text representation of the data frame. [`debugDescription`](/documentation/TabularData/DataFrame/debugDescription) A text representation of the data frame suitable for debugging. [`customMirror`](/documentation/TabularData/DataFrame/customMirror) A mirror that reflects the data frame. ### Comparing Data Frames [`==(_:_:)`](/documentation/TabularData/DataFrame/==(_:_:)) Returns a Boolean that indicates whether the data frames are equal. ### Hashing a Data Frame [`hash(into:)`](/documentation/TabularData/DataFrame/hash(into:)) Hashes the essential components of the data frame by feeding them into a hasher. --- Copyright © 2026 Apple Inc. 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