 | FrameExtensionsExpandColumnsR Method (FrameR, String, IEnumerableString) |
Creates a new data frame where the specified columns are expanded based on runtime
structure of the objects they store. A column can be expanded if it is
`Series<string, T>` or `IDictionary<K, V>` or if it is any .NET object with readable
properties.
## Example
Given a data frame with a series that contains tuples, you can expand the
tuple members and get a frame with columns `S.Item1` and `S.Item2`:
let df = frame [ "S" => series [ 1 => (1, "One"); 2 => (2, "Two") ] ]
df.ExpandColumns ["S"]
## Parameters
- `names` - Names of columns in the original data frame to be expanded
- `frame` - Input data frame whose columns will be expanded
[category:Data structure manipulation]
Namespace: Deedle
Assembly: Deedle (in Deedle.dll) Version: 1.2
SyntaxC#
public static Frame<R, string> ExpandColumns<R>( this Frame<R, string> frame, IEnumerable<string> names )
Parameters
- frame
- Type: DeedleFrameR, String
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- names
- Type: System.Collections.GenericIEnumerableString
[Missing <param name="names"/> documentation for "M:Deedle.FrameExtensions.ExpandColumns``1(Deedle.Frame{``0,System.String},System.Collections.Generic.IEnumerable{System.String})"]
Type Parameters
- R
Return Value
Type: FrameR, String[Missing <returns> documentation for "M:Deedle.FrameExtensions.ExpandColumns``1(Deedle.Frame{``0,System.String},System.Collections.Generic.IEnumerable{System.String})"]
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type FrameR, String. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).See Also