AgeDepthFit 1 - Simple   Video 11 min

1. Run AgeDepthFit to select raw age versus depth data, e.g. PMag or Nannos.

2. A new folder named AgeDepthFit is created containing  fit waves for age and depth plus a wave of the Coefficients of the fit wave. A sedimentation rate curve is also created from the age-depth fit.

3. To exclude data points from the fit, put the A Cursor on a data point and run Weight_0. The data point will change shape and color (purple). 

4. Run AgeDepthReFit to run the fitting routine again with the same settings. This function preserves data weighting.

Notes: 

You can select to fit data only between the cursors. Useful to break the age model into multiple line segments.

When AgeDepthFit is run, it sets all data weights to 1 (equal weights). If you change the weighting and run it again, all will be reset to 1. Use AgeDepthReFit to avoid resetting weights.

There is a warning when the fit is recurved - showing age increasing while depth decreases for example. This happens mostly for higher order fits and is most common when there are data at the very bottom of a deep hole that separated from the rest of the data by a significant gap in age and/or depth.