CELLSUM is the jCell module of jLab.

 CELLSUM  Sum of each element a cell array, possibly weighted.
 
    S=CELLSUM(X) where X is a cell array of N arrays, is equivalent to
   
       S(1,1)=SUM(X{1}(:)),  S(2,1)=SUM(X{2}(:)), ...,  S(N,1)=SUM(X{N}(:))
 
    thus returning an N x 1 array containing the sum over all values of 
    each element in the cell array.
 
    In taking the sum, non-finite values are ignored, as in VSUM.
    S is a column vector of the same length as X.  
 
    [S1,S2,...,SP]=CELLSUM(X1,X2,...,XP) also works for P different 
    input arguments. 
 
    CELLSUM(X1,X2,...XP);  with no output arguments overwrites the 
    original input variables.
    __________________________________________________________________   
 
    Weighted sums
 
    CELLSUM(X,'weight',W) or CELLSUM(X1,X2,...,XP,'weight',W) where W is 
    a cell array of the same size as the other input variables, computes
    the weighted sum, using the weighting factor ABS(W).^2.  
    __________________________________________________________________   
 
    Parallelization
 
    CELLSUM(...,'parallel') parallelizes the computation using a PARFOR 
    loop.  This requires that Matlab's Parallel Computing Toolbox be 
    installed, and is useful for very large datasets.
    __________________________________________________________________   
 
    See also CELLSTD, CELLMED, JCELL.
 
    Usage: s=cellsum(x);
           [s1,s2,s3]=cellsum(x1,x2,x3);
           cellsum(x1,x2,x3,'weight',w);
           cellsum(x1,x2,x3);
           cellsum(x1,x2,x3,'parallel');
    __________________________________________________________________
    This is part of JLAB --- type 'help jlab' for more information
    (C) 2014--2019 J.M. Lilly --- type 'help jlab_license' for details

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