A pretty plotting package for Flutter apps

Last update: Sep 27, 2022

Related tags

Overview

flutter_plot

R. C. Howell - 2018

A pretty plotting package for Flutter apps. Sizing and autopadding isn't great right now, but tinkering with padding and fontSize will allow for you to align things well. You can also check out /docs to learn more, but it really is a single file package.

Example 1

This example is more complicated than typical because it's showing off the styling capability.

final List<Point> data = [
  const Point(21.0, 19.0),
  const Point(3.0, 7.0),
  const Point(8.0, 9.0),
  const Point(11.0, 14.0),
  const Point(18.0, 17.0),
  const Point(7.0, 8.0),
  const Point(-4.0, -4.0),
  const Point(6.0, 12.0),
];

new Card(
  child: new Column(
    children: <Widget>[
      new Container(
        padding: const EdgeInsets.only(top: 12.0),
        child: new Text('Super Neat Plot'),
      ),
      new Container(
        child: new Plot(
          height: 200.0,
          data: widget.data,
          gridSize: new Offset(2.0, 2.0),
          style: new PlotStyle(
            pointRadius: 3.0,
            outlineRadius: 1.0,
            primary: Colors.white,
            secondary: Colors.orange,
            textStyle: new TextStyle(
              fontSize: 8.0,
              color: Colors.blueGrey,
            ),
            axis: Colors.blueGrey[600],
            gridline: Colors.blueGrey[100],
          ),
          padding: const EdgeInsets.fromLTRB(40.0, 12.0, 12.0, 40.0),
          xTitle: 'My X Title',
          yTitle: 'My Y Title',
          ),
      ),
    ],
  ),
),

Example 2

// Using the same data as before

Plot simplePlot = new Plot(
  height: 200.0,
  data: widget.data,
  gridSize: new Offset(2.0, 2.0),
  style: new PlotStyle(
    primary: Colors.black,
    textStyle: new TextStyle(
      fontSize: 8.0,
      color: Colors.blueGrey,
    ),
    axis: Colors.blueGrey[600],
  ),
  padding: const EdgeInsets.fromLTRB(40.0, 12.0, 12.0, 40.0),
);

Displaying trace lines and coordinates

final List<Point> data = [
  const Point(9, 1),
  const Point(-7.0, 19.0),
  const Point(13.0, 5.0),
  const Point(-10.0, -4.0),
  const Point(16.0, 12.0),
];

new Card(
  child: new Column(
    children: <Widget>[
      new Container(
        padding: const EdgeInsets.only(top: 12.0),
        child: new Text('Super Neat Plot'),
      ),
      new Container(
        child: new Plot(
          height: 200.0,
          data: widget.data,
          gridSize: new Offset(2.0, 2.0),
          style: new PlotStyle(
            axisStrokeWidth: 2.0,
            pointRadius: 3.0,
            outlineRadius: 1.0,
            primary: Colors.yellow,
            secondary: Colors.red,
            trace: true,
            traceStokeWidth: 3.0,
            traceColor: Colors.blueGrey,
            traceClose: true,
            showCoordinates: true,
            textStyle: new TextStyle(
              fontSize: 8.0,
              color: Colors.grey,
            ),
            axis: Colors.blueGrey[600],
            gridline: Colors.blueGrey[100],
          ),
            axis: Colors.blueGrey[600],
            gridline: Colors.blueGrey[100],
          ),
          padding: const EdgeInsets.fromLTRB(40.0, 12.0, 12.0, 40.0),
          xTitle: 'My X Title',
          yTitle: 'My Y Title',
          ),
      ),
    ],
  ),
),

How to Use

Add as a dependency
import 'package:flutter_plot/flutter_plot.dart';
See examples! There's not much to this package yet!

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Comments

Plotting problem

Maybe this isn't the supposed usage, but I was using your lib to plot geometrical transformations, and simply can't plot a square. Is there any way to get this right?

Example:

class _PlotterState extends State<Plotter> {
  List<Point> originalShape = [
    Point(1, 1),
    Point(4, 1),
    Point(1, 4),
    Point(4, 4)
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Shape Plotting"),
        backgroundColor: Colors.blueGrey[900],
      ),
      body: Center(
        child: Container(
          width: 500,
          padding: EdgeInsets.all(10),
          child: Plot(
            height: 400.0,
            data: originalShape,
            centered: true,
            gridSize: Offset(2.0, 2.0),
            style: PlotStyle(
                pointRadius: 3.0,
                outlineRadius: 1.0,
                primary: Colors.white,
                secondary: Colors.blueAccent,
                textStyle: TextStyle(
                  fontSize: 10.0,
                  color: Colors.blueGrey,
                ),
                axis: Colors.blueGrey[600],
                gridline: Colors.blueGrey[100],
                trace: true,
                traceClose: true),
            padding: EdgeInsets.fromLTRB(40.0, 12.0, 12.0, 40.0),
            xTitle: 'X',
            yTitle: 'Y',
          ),
        ),
      ),
    );
  }

Result

opened by h80r 3

Add centered parameter

Adds a centered parameter (bool), which centers the origin of the plot (0,0). The X and Y axis length becomes the same in order to achieve the centering.

Screenshot

opened by Coec0 1
Null-safety migration

Dart/Flutter null-safety is at the end of beta and many apps are already using it, obviously this package should have it. I hacked something up in a few minutes and it works in my app.

opened by pixelcmtd 0
Added line trace and display coordinates

Hi,

I added lines trace and display of coordinates above each point, both of these have setters soy they can be toggled, for example with a button.

These are the properties added to the PlotStyle class:

**### /// If true lines will be drawn between each consecutive point /// /// Defaluts to false bool trace;

/// If true a line will be traced between the last point and the first /// /// Defaluts to false bool traceClose;

/// Color to draw trace lines with /// /// Defaults to #FF0000FF (Blue) final Color traceColor;

/// Trace line stroke width /// /// Defaults to 2.0 final double traceStokeWidth;

/// If true each point's coordinates will be displayed above each point /// /// Defaults to false bool showCoordinates;**

opened by RaulMarquezInclan 0

Owner

R. C. Howell

Sometimes nothin can be a real cool hand

GitHub https://pub.dartlang.org/packages/flutter_plot#-readme-tab-

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