nancumsum Matlab script

Publisher review:
nancumsum - Compute the cumulative sum of matrices, specifying the treatment of NaNs. Cumulative sum of a matrix, with user-specified treatment of NaNs.Computes the cumulative sum of matrix A along dimension DIM, allowing the user to replace NaNs with zeros, to maintain NaNs as placeholders, or, when A is a vector, to discard NaNs. USAGE: B = nancumsum(A, DIM, NMODE)ARGUMENTS:A: Input matrix.B: Output cumulative sum matrix, treating NaNs as determined by nmode.Note that if B is a vector (1xn or nx1), A may or may not be the same size as B, depending on the method selected for representing NaNs.DIM: B = nancumsum(A, DIM) returns the nan-cumulative sum of the elementsalong the dimension of A specified by scalar DIM. For example,nancumsum(A,1) works down the columns, nancumsum(A,2) works across the rows. If DIM is not specified, it defaults to the first non-singleton dimension of A. NMODE: specifies how NaNs should be treated. Acceptable values are:1: REPLACE NaNs with zeros (default).2: MAINTAIN NaNs as position holders in B.3: DISCARD NaNs.Note: this is legal only for VECTOR values of A.EXAMPLES:1) a=[NaN,2:5];nancumsum(a)ans =0 2 5 9 14nancumsum(a,[],2)ans =NaN 2 5 9 14nancumsum(a,[],3)ans =2 5 9 142) a = magic(3); a(4)=NaN;b=nancumsum(a,2)b =8 8 143 8 154 13 15b=nancumsum(a,2,2)b =8 NaN 63 5 74 9 2See also: cumsum, nansum, nancumprod, nanmean, nanmedian, ... (nancumprod is available from the FEX. Other nan* may require Toolboxes)
Operating system:
Windows / Linux / Mac OS / BSD / Solaris

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