peakIdenti {flowSpecs} | R Documentation

## Peak identification for higher-level functions.

### Description

This function is primarily thought to be used internally to define peaks in data. One function is borrowed from package vulcan, namely the vulcan::densityauc, which is neat, but the package is large and significantly increases the installation time, and the importing is thus discarded.

### Usage

    peakIdenti(markerData, volThresh = 0.05, distThresh = 0.1,
      adjust = 2, nPeaks = 2, returnStats = FALSE)

### Arguments

`markerData` | The data that the peaks should be identified for
`volThresh` | The cutoff ratio of the volume for each secondary peak, under which it is not considered to be a peak
`distThresh` | The cutoff under which two peaks are considered one, as they are too close to each other. This value between 0 and 1 corresponds to a fraction from the 10th to the 90th percentile of the data range that the peaks must be separated by to count. Defaults to 0.1 or 10 percent of the distance.
`adjust` | The value deciding the accuracy of the density calculation. The higher the value, the lower the sensitivity for small aberrations in the density.
`nPeaks` | The number of peaks that should be exported. If n+1 fulfilling the volRatio criterion are found, the peaks most separated in space are chosen.
`returnStats` | Should the deflection points defining the peaks, the peak hight and the lowest deflection point between the two most extreme peaks be included in the export?

### Value

The information about the peaks in question. Depending on if returnStats is TRUE or not and the number of peaks, it will change in complexity.

### See Also

`densityauc`

[Package flowSpecs version 1.1.2 Index]