2. Interpolations and extrapolations

2.1 Introduction

Interpolations are required very often by students during their physics workshops. Monumeric makes it piece of cake to manage them. The interpolation method used is the Lagrange method.

2.2 Using the interpolation tab

In order to get an interpolated/extrapolated value given a data table, you need to proceed as (*):

• 1. Enter the X data in the X entry.
• 2. Enter the Y data in the Y entry.
• 3. Enter the X value you want to interpolate for.
• 4. Click the 'Run' button.

Here there is the API for the interpolations:

Method	Description
public static double[] Interpolation (double[] xarr, double[] yarr, double xval)	Interpolation by Lagrange's method.

(*) Enter the values as described in the regresions section: as in this example: 0.0 10.1 21.234 (one single whitespace between numbers).