Step Plots with two linear fits

To add a predefined fit curve to your plot, complete the steps below. If you'd prefer a video, check out Grapher Fit Curves Training Video.

1. Create the fit curve:
   1. Click on the Line/Scatter Plot in the Object Manager to select it.
   2. Click Home | Add to Graph | Fit Curve. By default, a linear fit will be added.
2. Change the direction of the fit curve:
   1. Click on the new Linear Fit in the Object Manager to select it.
   2. In the Property Manager, click on the Plot tab.
   3. If desired, change the Fit direction by clicking over Y = F(X) and selecting X = F(Y).
3. Changing the fit curve type:
   1. Change the Fit type field to your desired type. The available fit types are listed below. More information about each fit type can be found in Grapher's Help on the Available Fits page.
      • Linear
      • Log
      • Exponential
      • Power
      • Spline Smoothing
      • Polynomial
      • Orthogonal Polynomial 
      • Through Origin
      • Running Average
      • Weighted Average
      • LOESS (LOWESS)
      • Reduced Major Axis

To add a fit curve in Grapher 13, see the steps below:

1. Click on the Line/Scatter Plot in the Object Manager to select it.
2. Click on the Plot tab in the Property Manager.
3. Click Add/Edit in the Fit curve field.
4. In the Fits dialog, click in the Available Fits field and select your desired fit type.
5. Click Add.
6. Click OK.

Updated February 25, 2020