--- title: "AddExtrapolated" slug: "addextrapolated" updated: 2023-03-20T11:19:28Z published: 2023-03-20T11:19:28Z canonical: "docs.datajet.app/addextrapolated" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.datajet.app/llms.txt > Use this file to discover all available pages before exploring further. # AddExtrapolated Creates a set of values with a consistent gradient between the first and last row of the specified column ### Purpose Use this function to: - Create a straight line between start and end points in a data set ### Parameters | Parameter | Description | | --- | --- | | Column Name | Required. The name of the output column | | Data Column | Required. The result-set column from which to take the starting and ending value. Can be a column generated by a measure, or the output of a previous Post-Process within the current Multi-Function profile. | | Plot Axis | 0 / 1. Y-Axis to use when plotting graph. Default = 0 | | Plot As | Bar / Stacked Bar / Line / Spline / RangeLow / RangeHigh / CSLow / CSHigh / CSOpen / CSClose Determines the graph style for the output column. | | Plot | Y / N. Specifies whether measure’s output column should be plotted on graph. Default = Y | | Popup Mode | Default / None / Extended | | Prefix | £ / $ / E / % | ### Examples ![](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/image-1679310723442.png)