AgeDepthFit 2 -MultiDataSets    Video 8 min

1. Run AgeDataSelection to choose the age-depth data waves that you want to include in the fit. A new folder named AgeDepthFit is created. The combined data waves are named with the Site and then “_AgeData_4_Fit”, “_DataEvent_4_Fit”, “_DataType_4_Fit”, and “_DepthData_4_Fit”. 

2. Run AgeDepthFit and select the waves formed in #1.

3. AgeDepthFit contains  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.

4. 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). 

5. Use SetWeights to change data weighting for an entire Type of data.

6. 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.