Interface GSDOptions

Threshold to use an absolute ratio of the maximum absolute Y value as an additional minimum peak height. Value must be between 0 and 1. When 0 (default) this option is ignored and noiseLevel is used.

Peaks are local maxima (true) or minima (false)

Minimal height of small peaks based on the ratio between min and max

Peaks under the noiseLevel (or above it in case of maxCriteria=false) are ignored. When omitted, the noise level is estimated from the spectrum for equally-spaced x, and set to 0 otherwise.

Algorithm used for peak detection:

• 'first': Uses the first derivative to detect peaks, detecting only the peaks which first derivative cross the zero.
• 'second': Uses the second derivative to detect peaks (inflection points).
• 'auto': Automatically selects the peaks by checking the zero crossing of the first derivative or the local minima in the second derivative.

Use a quadratic optimizations with the peak and its 3 closest neighbors

Options for the Savitzky-Golay generalised algorithm. This algorithm is used to calculate the first ans second derivative. It is also used when smoothY:true to smooth the spectrum for peak picking. The Y values in case of smoothY is true will therefore be lower.

Select the peak intensities from a smoothed version of the independent variables