diff general/numerical/addnorm.m @ 4:e44f49929e56

Adding reorganised general toolbox, now in several subdirectories.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/general/numerical/addnorm.m	Sat Jan 12 19:21:22 2013 +0000
@@ -0,0 +1,23 @@
+function [Y,M]=addnorm(F,X)
+% addnorm - additive normalisation with respect to arbitrary function
+% 
+% addnorm :: 
+%    ([[N,M]] -> [[N,1]]) | ([[N,M]] -> [[1,M]]) 
+%       ~'function to compute offsets',
+%    [[N,M]]           ~'data to normalise'
+% -> [[N,M]]           ~'offset vectors' 
+%    [[N,1]] | [[1,M]] ~'the vector that was subtracted'.
+%
+% This function can work row-wise OR column-wise depending on what
+% the offset computing function returns.
+%
+% EXAMPLES
+% 
+% To zero-mean each ROW of an N-by-M array X, use
+%    addnorm(@(t)mean(t,2),X);
+%
+% To zero the MEDIAN of each COLUMN, use
+%    addnorm(@median,X);
+
+Y=vecop1(@minus,X,F(X)); % vecshift(F(X),X);
+