# HG changeset patch # User jcb-mpl # Date 1652357752 0 # Node ID 247771a356a72fb9d1a6501b7c74600a3f796342 # Parent c0a2e5e78725f2a3225bb21dd1d76a474754793a Uploaded diff -r c0a2e5e78725 -r 247771a356a7 features_extract.xml --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/features_extract.xml Thu May 12 12:15:52 2022 +0000 @@ -0,0 +1,203 @@ + + extracts the peaks (m/z x TR) from the EICs + + + scilab + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +**Authors** Jean-Claude Boulet (INRA). + + +--------------------------------------------------- + +========================= +PEAKS:FEATURES EXTRACTION +========================= + +----------- +Description +----------- + +A feature or peak is a signal recorded for a given m/z value and a range of retention times. + +This function extracts the peaks of each EIC from an EIC matrix. + +Note: this features extraction algorithm does not claim novelty nor higher performances. But it corresponds well to our outputs. For a basic use. + + + +----- +Input +----- + +**EICs files** + +- a matrix from e.g. the function: EICs-synchronized -> EICs-merged + +- or a list yielded by the function: EICs -> checks reference mz + + +---------- +Parameters +---------- + +**Number** + +In case of a list, the number to select, from 1 to 5, corresponding to the m/z thresholds of 0.0005, 0.0010, 0.0030, 0.0050 and 0.0100 respectively + +**Maximum range of retention time** + +Default value: 0.3 + + +**Minimum range of retention time** + +Default value: 0.05 + +**Threshold for Durbin-Watson** + +Default value: 1 + + +------- +Outputs +------- + +**Peaks list** + +A file of 4 columns: RT min, RT max, m/z value and signal + +**Peaks detail** + +The file, format HDF5-scilab, contains a list. + +Each element of the list is associated to a peak, i.e. a line of the Peaks List output. + +Each element of the list contains a column vector of the signals recorded along a range of retention times, identified by the line labels. The column label is the m/z value of the peak. + + + + + + + + + +