# Interpolation

## Interpolation with MATLAB


       
  


Linear interpolation is one of the most common techniques for estimating values between two given data points. For example, when using steam tables, we often have to carry out interpolations. With this technique, we assume that the function between the two points is linear. MATLAB has a built-in interpolation function.
  

### The interp1 Function

Give an x-y table, y_new = interp1(x,y,x_new) interpolates to find y_new. Consider the following examples:

### Summary of Key Points

1. Linear interpolation is a technique for estimating values between two given data points,
2. Problems involving steam tables often require interpolated data,
3. MATLAB has a built-in interpolation function.