How set scale limits of y-axis between 0-1 when values range from -9500 to 9200

I have a large data set of relflectance values

I am trying to change these values in order for the min value to be respect of 0 and max 1 i.e. -9500 = 0 and 9200 = 1

I've tried the rescale function different way but still get it scaled were all my values are between 0.508 and 0.512 rather than spread between 0 - 1

does anyone know why or have code that can help?

Thank you

Erin

Answer 1

[Yash]

You can use the "normalize" function to do min-max scaling of your dataset to the range [0,1].

data = [-9500, -5000, 0, 5000, 9200];  % Sample data
disp(data);

       -9500       -5000           0        5000        9200

normalized_data = normalize(data, 'range'); % 'range' rescales range of data to [0, 1]
disp(normalized_data);

    0.0000    0.2406    0.5080    0.7754    1.0000

Refer to the documentation of "normalize" function here: https://www.mathworks.com/help/matlab/ref/double.normalize.html