statistics

Statistics package for easy and efficient data manipulation with many built-in mathematical functions and units.

Usage

Numeric extension:

import 'package:statistics/statistics.dart';

void main() {
  var ns = [10, 20.0, 30];
  print('ns: $ns');

  var mean = ns.mean;
  print('mean: $mean');

  var sdv = ns.standardDeviation;
  print('sdv: $sdv');

  var squares = ns.square;
  print('squares: $squares');
}

OUTPUT:

ns: [10, 20.0, 30]
mean: 20.0
sdv: 8.16496580927726
squares: [100.0, 400.0, 900.0]

Statistics

import 'package:statistics/statistics.dart';

void main() {
  var ns = [10, 20.0, 30];
  var statistics = ns.statistics;

  print('Statistics.max: ${ statistics.max }');
  print('Statistics.min: ${ statistics.min }');
  print('Statistics.mean: ${ statistics.mean }');
  print('Statistics.standardDeviation: ${ statistics.standardDeviation }');
  print('Statistics.sum: ${ statistics.sum }');
  print('Statistics.center: ${ statistics.center }');
  print('Statistics.squaresSum: ${ statistics.squaresSum }');

  print('Statistics: $statistics');
}

OUTPUT:

Statistics.max: 30
Statistics.min: 10
Statistics.mean: 20.0
Statistics.standardDeviation: 21.602468994692867
Statistics.sum: 60.0
Statistics.center: 20.0
Statistics.squaresSum: 1400.0
Statistics: {~20 +-21.6024 [10..(20)..30] #3.0}

CSV

import 'package:statistics/statistics.dart';

void main() {
  var categories = <String, List<double?>>{
    'a': [10.0, 20.0, null],
    'b': [100.0, 200.0, 300.0]
  };

  var csv = categories.generateCSV();
  print(csv);
}

OUTPUT:

#,a,b
1,10.0,100.0
2,20.0,200.0
3,0.0,300.0

Source

The official source code is hosted @ GitHub:

https://github.com/gmpassos/statistics

Features and bugs

Please file feature requests and bugs at the issue tracker.

Contribution

Any help from the open-source community is always welcome and needed:

Found an issue?
- Please fill a bug report with details.
Wish a feature?
- Open a feature request with use cases.
Are you using and liking the project?
- Promote the project: create an article, do a post or make a donation.
Are you a developer?
- Fix a bug and send a pull request.
- Implement a new feature.
- Improve the Unit Tests.
Have you already helped in any way?
- Many thanks from me, the contributors and everybody that uses this project!