Plot of the generalised logarithm and extended generalised logarithm functions. The glog was plotted using a λ value of 1 × 10-12 (solid blue line) and the extended glog was plotted using a λ value of 1 × 10-13 and a y0 value of 1 × 10-4 (solid red line). The effects of changing the two transformation parameters are indicated on the diagram by the black arrows. Since the transformed intensities include negative values, following the transformation each spectrum is linearly shifted upwards so that each baseline is located at zero intensity.
Parsons et al. BMC Bioinformatics 2007 8:234 doi:10.1186/1471-2105-8-234