Identify

NAME

Identify - identify simple peaks
SYNOPSIS

Identify expr { expr } { expr } expr expr
DESCRIPTION

Find the peaks that can be simply identified in all selected regions. The Segment command must be executed before using this command.

The first argument gives a minimal amplitude for peaks identified, as factor of the noise level. This is typically between 2.0 and 5.0.

The next arguments give a mimimal size (in data points) for each direction used for doing the necessary calculations of symmetry etc. This is typically chosen the same or somewhat less than the minimal size given for segmentation.

The next arguments give a maximal splitting of peaks (in data points) for each direction. A value of 1.0 should be given if no splitting is expected.

The next argument gives the allowed relative difference of amplitudes for split peaks. This is typically a very small value.

The last argument is the maximum allowed symmetry error of a peak relative to its amplitude. If the error is larger than this value, it is considered to be consisting of multiple peaks. Typical values are between 0.1 and 0.5.

EXAMPLE

Identify 3.0 3 2 5.0 1.0 0.02 0.5
SEE ALSO

Segment, SelectSpec, ClusterShape

DATE

960913


Reto Koradi, kor@mol.biol.ethz.ch