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Peak Picking

The Peak Picking algorithm automatically detects peaks in any 2D data objects. Resulting peaks will be shown in a peak table on the peak table tab. Peaks are also colored in the data view to show the peak areas.

Finding peaks is performed as follows:

Peak Picking menu command

To find peaks using the menu command, please follow the instructions below:

  1. Activate the 2D data object you would like to find peaks in.

  2. From the Mathematics menu, select the Peak Picking command.

  3. (Optional) Enable Auto Detect and enter your desired amount of peaks. Proceed to step 7.

  4. In the Mathematics tab, adjust the find peaks parameters.

  5. Alternatively, move the horizontal threshold line to a new position (Optional).
    The line can be easily moved by a fixed distance using the Arrow Up and Arrow Down buttons in the mathematics tab.

What is the horizontal line good for?

The horizontal line indicates the threshold for peak detection. The minimum required intensity with respect to the data baseline is shown. The line can be moved by drag and drop:

  1. Move the mouse pointer close to the horizontal threshold line.

  2. Push and hold the Left mouse button.

  3. Move the mouse upwards or downwards. The line follows the movement.

  4. Release the Left mouse button.

 

  1. The peak picking results will be automatically update when modifying the horizontal threshold line.

  2. If you manually edited the parameters or enabled auto detect click the Calculate button to update the results.

Peak Picking keyboard shortcut

None.

Peak Picking parameters

The following parameters can be adjusted:

Group adjacent peaks

Please refer to the Baseline Correction parameters for details.

Minimum peak height

Please refer to the Baseline Correction parameters for details.

Minimum peak width

Please refer to the Baseline Correction parameters for details.