Baseline correction

The baseline correction algorithm allows automatic correction of drifted baselines using a polynomial fit function and automatic peak detection. For peak detection purposes, some additional parameters must be adjusted.

Baseline correction is only available for 2D data objects.

 

Various baseline correction algorithms are available. Please review the Baseline Correction section in the chapter "Mathematics" for details.

To perform a baseline correction, please follow the instructions below:

Baseline correction menu command

To perform a baseline correction using the menu command, please follow the instructions below:

1. Activate the spectrum, you like to correct.

2. From the Mathematics menu, select the Baseline Correction command.

3. Adjust the baseline parameters in the Mathematics tab.

4. Move the baseline knots indicated by red squares to match your needs (Optional).

5. Add new baseline knots (Optional).

6. Remove those baseline knots not needed (Optional).

7. Press the Calculate button.

Baseline correction keyboard shortcut

None.

Adding baseline knots

Adding baseline knots is only possible when using the polyline algorithm. To add a baseline knot, follow the instructions below:

1. Move the mouse pointer to the destination in the data view where to add a new baseline knot.

2. Hold down the CTRL-key and click the Left mouse button to add a baseline knot.

Removing baseline knots

To remove baseline knots follow the instructions below:

1. Move the mouse pointer to the baseline knot to be removed.

2. Click the Left mouse button to activate the baseline knot.

3. Press the DEL-key to remove it.