Libraries.Compute.Statistics.Transforms.ColumnRowFilterTransform

This action takes the data from the current DataFrame then reverses it so that the top row is now at the bottom and vice versa.

Example Code

use Libraries.Compute.Statistics.DataFrame
    use Libraries.Compute.Statistics.Transforms.ColumnRowFilterTransform
    use Libraries.System.File

    //Load a comma separated file
    DataFrame frame
    frame:Load("Data.csv")

    //Get a copy of the data frame's first two columns, up to row 5.
    ColumnRowFilterTransform transform
    transform:SetColumnStart(0)
    transform:SetColumnEnd(1)
    transform:SetRowStart(0)
    transform:SetRowEnd(5)
    frame:Transform(transform)

This action compares two object hash codes and returns an integer. The result is larger if this hash code is larger than the object passed as a parameter, smaller, or equal. In this case, -1 means smaller, 0 means equal, and 1 means larger. This action was changed in Quorum 7 to return an integer, instead of a CompareResult object, because the previous implementation was causing efficiency issues.

Example Code

Object o
        Object t
        integer result = o:Compare(t) //1 (larger), 0 (equal), or -1 (smaller)

This action tells us whether or not this transform makes a copy of the data or modifies it in place. Transforms that do not make a copy should override this action.

Example Code

use Libraries.Compute.Statistics.DataFrame
        use Libraries.Compute.Statistics.Transforms.ReverseTransform
        use Libraries.System.File

        //Load a comma separated file
        DataFrame frame
        frame:Load("Data.csv")

        //reverse the data frame
        ReverseTransform reverse
        output reverse:CreatesCopy() // by default, this transform returns true.

This action determines if two objects are equal based on their hash code values.

Example Code

use Libraries.Language.Object
        use Libraries.Language.Types.Text
        Object o
        Text t
        boolean result = o:Equals(t)

The 0-index ending column.

The 0-index starting column.

This action gets the hash code for an object.

Example Code

Object o
        integer hash = o:GetHashCode()

The 0-index starting row.

The 0-index starting row.

The 0-index ending column.

The 0-index starting column.

The 0-index ending row.

The 0-index starting row.