CODEWITHSUNDEEP
androidflutterdartnormalization
GILO
GILO

Reputation: 2623

How to normalise data between [-1, 1] in flutter

I was wondering if there is a built in normalisation function in flutter. That works like this

List<int> array = [-105,24,66,-50,-49,2]

//Normalises to get numbers between -1 and 1
List<double> normalised = array.normalise(-1,1)

Upvotes: 3

Views: 2192

Answers (1)

Miguel Ruivo
Miguel Ruivo

Reputation: 17756

I'm afraid there isn't one, but I've made what you're looking for manually:

import 'dart:math';

List<int> array = [-105, 24, 66, -50, -49, 2];
final lower = array.reduce(min);
final upper = array.reduce(max);
final List<double> normalized = [];

array.forEach((element) => element < 0
    ? normalized.add(-(element / lower))
    : normalized.add(element / upper));

print(normalized);

Upvotes: 5

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