matlab归一化和反归一化函数——mapminmax

A=[1 2 3;4 5 6]

A =

     1     2     3
     4     5     6

>> [B,PS]=mapminmax(A,0,1)

B =

         0    0.5000    1.0000
         0    0.5000    1.0000


PS = 

         name: 'mapminmax'
        xrows: 2
         xmax: [2x1 double]
         xmin: [2x1 double]
       xrange: [2x1 double]
        yrows: 2
         ymax: 1
         ymin: 0
       yrange: 1
    no_change: 0
         gain: [2x1 double]
      xoffset: [2x1 double]

>> mapminmax('reverse',B,PS)

ans =

     1     2     3
     4     5     6

>>