Interpolation Calculator

Use the Interpolation Calculator to interpolate a curve fit's X-value based on a Y-value and subsequently display the values on the graph. The interpolation calculator is different from the interpolate function in that the Interpolation Calculator remains in place while the interpolate function moves with the mouse pointer.


Using the Interpolation Calculator

  1. Perform a curve fit or linear fit on your collected data.
  2. Select Interpolation Calculator from the Analyze menu. The following dialog will appear.
         
  1. Select from the pull-down menu the Curve Fit you want the interpolation calculator to use.
  2. The current live sensor reading will be entered as the default Y-value. You can use this value or enter a value using the keyboard.
  3. Click OK when done.
A helper object with the X and Y-values appears on the graph. This can be updated by double-clicking on the helper object to call up the options dialog. If the curve fit dialog has multiple X-values for a given Y-value, the square brackets of the Interpolation Calculator can be used to select the region of the fit used for interpolation.