Background estimation¶
Shown: with measured data.
Estimation settings¶
The Extra tab's Background group holds the estimation settings. It appears once the experiment has measured data. Leave a field empty to let the estimator choose where that option supports automatic selection.
| Setting | Purpose |
|---|---|
| Calculated peaks | Use auto, subtract the model's calculated peaks, or ignore them. |
| Anchor points | Control the number of points in a line-segment background. |
| Max terms | Limit the number of polynomial or Chebyshev terms. |
| Baseline method | Select the method used to find the curve under the peaks. |
| Peak width and smoothness | Control the scale on which the baseline is estimated. |
| Noise tolerance | Control how closely the points or terms follow the estimated curve. |
Subtracting calculated peaks can help where peaks overlap and the measured intensity never reaches the background. A poor model can make subtraction misleading. The default auto choice checks whether the model is suitable and reports its choice below the settings.
