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

Adding reorganised general toolbox, now in several subdirectories.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/general/numerical/minmax.m	Sat Jan 12 19:21:22 2013 +0000
@@ -0,0 +1,15 @@
+function R=minmax(X,I)
+% minmax - return minimum and maximum along a particular dimension
+%
+% minmax :: [[N,M]], 1:natural -> [[2,M]].
+% minmax :: [[N,M]], 2:natural -> [[N,2]].
+% minmax :: [D:[[1,E]]], I:[E] -> [set(D,I,2)].
+%
+% The most general type means that the return array is the same size
+% as the input array except that the size along the Ith dimension
+% becomes 2, first element is min, second is max.
+% 
+% The functions is constructed so that it is idemponent:
+%   minmax(X,I) == minmax(minmax(X,I),I)
+
+R= cat(I,min(X,[],I),max(X,[],I));