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Feature filter

Description

Feature list methods → Feature list filtering → Feature filter

This module deletes features in a selected feature list that do not meet the requirements defined by the user. The filter is performed separately on each raw data file in the peak list.

Parameters

Name suffix

Suffix to be added to feature list name.

Duration

Peaks with a duration outside the entered range will be removed.

Area

Peaks with an area outside the entered range will be removed.

Height

Peaks with a height outside the entered range will be removed.

# data points

Peaks with fewer data points than the entered range will be removed.

FWHM

Peaks with a FWHM outside the entered range will be removed.

Tailing factor

Peaks with a tailing factor outside the entered range will be removed.

Asymmetry factor

Peaks with an asymmetry factor outside the entered range will be removed.

Minimum RT shape score

(since mzmine 4.7)

Tries to fit a chromatographic peak with a Gaussian, a bi-Gaussian, or two Gaussian functions. The Gaussian function models an ideal case. The bi-Gaussian models each side with by a different gaussian function, creating a fronting or tailing gaussian. The model with two Gaussian functions describes a feature that has not been completely resolved during the feature resolving step. Features with less than 5 points will be removed automatically.

Minimum mobilogram shape score

(since mzmine 4.7)

Tries to fit a mobilogram with a Gaussian, a bi-Gaussian, or two Gaussian functions. The Gaussian function models an ideal case. The bi-Gaussian models each side with by a different gaussian function, creating a fronting or tailing gaussian. The model with two Gaussian functions describes a feature that has not been completely resolved during the feature resolving step. Features with less than 5 points will be removed automatically.

Top to edge ratio

(since mzmine 4.7)

Determines the top-to-edge ratio of the chromatographic peak by dividing the highest by the lowest point of the feature ( see feature resolving).

Keep only features with MS/MS scans

Peaks without any MS/MS scans will be removed.

Remove source feature list after filtering

If the checkbox is selected, the source feature list will be removed, and the filtered version will remain.

Steffen Heuckeroth, omokshyna