Normalization in variable range [ x , y ] in Matlab

问题:

I wanna create basic matlab program that normalizes given array of integer in the given range.

• Inputs are an array [ a1 , a2 , a3 , a4 , a5 , a6 , a7... ], and the range [ x , y ]
• Output is normalized array.

But in everywhere, i see the normalization in the range of [0,1] or [-1,1]. Can't find variable range normalization. I will be grateful if you write the matlab code or the formula for variable range.

Thank you for ideas.

回答1:

If you want to normalize to [x, y], first normalize to [0, 1] via:

 range = max(a) - min(a);  a = (a - min(a)) / range; 

Then scale to [x,y] via:

 range2 = y - x;  a = (a * range2) + x; 

Putting it all together:

 function normalized = normalize_var(array, x, y)       % Normalize to [0, 1]:      m = min(array);      range = max(array) - m;      array = (array - m) / range;       % Then scale to [x,y]:      range2 = y - x;      normalized = (array*range2) + x; 

文章来源: Normalization in variable range [ x , y ] in Matlab