RIDGECHAINS is the jRidges module of jLab.

 RIDGECHAINS  Forms ridge curves by connecting transform ridge points.
    RIDGECHAINS is a low-level function called by RIDGEWALK.
    [ID,IR,JR,WR]=RIDGECHAINS(N,BOOL,W) forms chains of ridge points of
    wavelet transform W.  
    Ridge points are all points of W for which BOOL, a matrix of the same
    size as W, is true.  Only ridges with at least N periods are returned.
    ID is a unique ID number assigned to each ridge.  IR and JR are the 
    time- and scale-indices along the ridges.  WR is the wavelet transform 
    along the ridge. 
    All output variables are the same size.
    See also RIDGEWALK.
    Usage:  [id,ii,jj,xr]=ridgechains(N,bool,x);
    This is part of JLAB --- type 'help jlab' for more information
    (C) 2006--2015 J.M. Lilly --- type 'help jlab_license' for details

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