OpenMS  3.0.0
PeakIntegrator.h File Reference
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Classes

class  PeakIntegrator
 Compute the area, background and shape metrics of a peak. More...
 
struct  PeakIntegrator::PeakArea
 
struct  PeakIntegrator::PeakBackground
 
struct  PeakIntegrator::PeakShapeMetrics
 

Namespaces

 OpenMS
 Main OpenMS namespace.
 

Class Documentation

◆ OpenMS::PeakIntegrator::PeakArea

struct OpenMS::PeakIntegrator::PeakArea
Collaboration diagram for PeakIntegrator::PeakArea:
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Class Members
double apex_pos

The position of the point with highest intensity

double area

The peak's computed area

double height

The peak's highest intensity

PointArrayType hull_points

The peak's hull points

◆ OpenMS::PeakIntegrator::PeakBackground

struct OpenMS::PeakIntegrator::PeakBackground
Collaboration diagram for PeakIntegrator::PeakBackground:
[legend]
Class Members
double area

The background area estimation

double height

The background height

◆ OpenMS::PeakIntegrator::PeakShapeMetrics

struct OpenMS::PeakIntegrator::PeakShapeMetrics
Collaboration diagram for PeakIntegrator::PeakShapeMetrics:
[legend]
Class Members
double asymmetry_factor

The asymmetry factor is a measure of peak tailing. It is defined as the distance from the center line of the peak to the back slope divided by the distance from the center line of the peak to the front slope, with all measurements made at 10% of the maximum peak height. asymmetry_factor = As = b/a where a is min width to peak maximum at 10% max peak height b is max width to peak maximum at 10% max peak height

double baseline_delta_2_height

The change in baseline divided by the height is a way of comparing the influence of the change of baseline on the peak height.

double end_position_at_10

The end position at which the intensity is 10% the peak's height.

double end_position_at_5

The end position at which the intensity is 5% the peak's height.

double end_position_at_50

The end position at which the intensity is 50% the peak's height.

Int points_across_baseline

The number of points across the baseline.

Int points_across_half_height

The number of points across half the peak's height.

double slope_of_baseline

The slope of the baseline is a measure of slope change. It is approximated as the difference in baselines between the peak start and peak end.

double start_position_at_10

The start position at which the intensity is 10% the peak's height.

double start_position_at_5

The start position at which the intensity is 5% the peak's height.

double start_position_at_50

The start position at which the intensity is 50% the peak's height.

double tailing_factor

The tailing factor is a measure of peak tailing. It is defined as the distance from the front slope of the peak to the back slope divided by twice the distance from the center line of the peak to the front slope, with all measurements made at 5% of the maximum peak height. tailing_factor = Tf = W0.05/2a where W0.05 is peak width at 5% max peak height a = min width to peak maximum at 5% max peak height b = max width to peak maximum at 5% max peak height 0.9 < Tf < 1.2 front Tf < 0.9 tailing Tf > 1.2

double total_width

The peak's total width.

double width_at_10

The width of the peak at 10% the peak's height.

double width_at_5

The width of the peak at 5% the peak's height.

double width_at_50

The width of the peak at 50% the peak's height.