dbscan 0.1.1

  • README.md
  • CHANGELOG.md
  • Example
  • Installing
  • Versions
  • 50

DBSCAN

Density Based Spatial Clustering for Applications with Noise

A spatial clustering library for dart for use any time you need to organize sets of data into groups of nearby clusters .

Usage

A simple usage example:

import 'dart:math';
import 'package:dbscan/dbscan.dart';

main() {
  List<Point<double>> _dataset = [
    new Point(1.0, 3.0),
    new Point(0.0, 0.0),
    new Point(2.0, 0.0),
    new Point(1.0, 1.0),
    new Point(3.0, 1.0),
    new Point(2.0, 3.0),
    new Point(1.0, 1.0),
    new Point(1.0, 2.0),
    new Point(0.0, 2.0),
    new Point(2.0, 3.0),
    new Point(3.0, 0.0),
    new Point(0.0, 1.0),
    new Point(1.0, 2.123),
  ];

  double distanceSigma = 1.25;
  int minimumNumberOfPointsInCluster = 4;

  var pointClusterer = new DBSCAN(_dataset, distanceSigma, 4, (Point<double> pointA, Point<double> pointB) {
    return sqrt(pow(pointA.x - pointB.x, 2) + pow(pointA.y - pointB.y, 2));
  });

  print('Clusters: ${pointClusterer.clusters}');
  print('Noise: ${pointClusterer.noise}');
}

Changelog

0.1.1

  • Typo in readme fixed

0.1.0

  • Initial version, created by Stagehand

example/dbscan_example.dart

// Copyright (c) 2017, erikrahtjen. All rights reserved. Use of this source code
// is governed by a BSD-style license that can be found in the LICENSE file.

import 'dart:math';
import 'package:dbscan/dbscan.dart';

main() {
  List<Point<double>> _dataset = [
    new Point(1.0, 3.0),
    new Point(0.0, 0.0),
    new Point(2.0, 0.0),
    new Point(1.0, 1.0),
    new Point(3.0, 1.0),
    new Point(2.0, 3.0),
    new Point(1.0, 1.0),
    new Point(1.0, 2.0),
    new Point(0.0, 2.0),
    new Point(2.0, 3.0),
    new Point(3.0, 0.0),
    new Point(0.0, 1.0),
    new Point(1.0, 2.123),
  ];

  double distanceSigma = 1.25;
  int minimumNumberOfPointsInCluster = 4;

  var pointClusterer = new DBSCAN(_dataset, distanceSigma, 4, (Point<double> pointA, Point<double> pointB) {
    return sqrt(pow(pointA.x - pointB.x, 2) + pow(pointA.y - pointB.y, 2));
  });

  print('Clusters: ${pointClusterer.clusters}');
  print('Noise: ${pointClusterer.noise}');
}

1. Depend on it

Add this to your package's pubspec.yaml file:


dependencies:
  dbscan: "^0.1.1"

2. Install it

You can install packages from the command line:

with pub:


$ pub get

with Flutter:


$ flutter packages get

Alternatively, your editor might support pub get or packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:


import 'package:dbscan/dbscan.dart';
        
Version Uploaded Documentation Archive
0.1.1 Jun 8, 2017 Go to the documentation of dbscan 0.1.1 Download dbscan 0.1.1 archive
0.1.0 Jun 8, 2017 Go to the documentation of dbscan 0.1.0 Download dbscan 0.1.0 archive

Analysis

We analyzed this package on Apr 23, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.0.0-dev.49.0
  • pana: 0.10.6

Scores

Popularity:
Describes how popular the package is relative to other packages. [more]
0 / 100
Health:
Code health derived from static analysis. [more]
99 / 100
Maintenance:
Reflects how tidy and up-to-date the package is. [more]
100 / 100
Overall score:
Weighted score of the above. [more]
50
Learn more about scoring.

Platforms

Detected platforms: Flutter, web, other

No platform restriction found in primary library package:dbscan/dbscan.dart.

Suggestions

  • Package is pre-v1 release.

    While there is nothing inherently wrong with versions of 0.*.*, it usually means that the author is still experimenting with the general direction API.

  • Fix analysis and formatting issues.

    Analysis or formatting checks reported 1 hint.

    Run dartfmt to format lib/src/dbscan_base.dart.

Dependencies

Package Constraint Resolved Available
Direct dependencies
Dart SDK >=1.20.1 <2.0.0
Dev dependencies
test ^0.12.0