Scale Data using Matlab

scaleData.m

function [train, test] = scaleData(train, test)

[row, col] = size(train);

normalMax = 1;
normalMin = -1;

for i=1:(col-1)
    realMax = max(train(:, i));
    realMin = min(train(:, i));
    ratio = (normalMax - normalMin) / (realMax - realMin);
    
    train(:, i) = (ratio * (train(:, i) - realMin)) + normalMin;
    test(:, i) = (ratio * (test(:, i) - realMin)) + normalMin;
end