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Android Graph Library for creating zoomable and scrollable line and bar graphs.
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README.markdown

Chart and Graph Library for Android

What is GraphView

GraphView is a library for Android to programmatically create flexible and nice-looking diagramms. It is easy to understand, to integrate and to customize it. At the moment there are two different types:

  • Line Charts
  • Bar Charts

Tested on Android 1.6, 2.2, 2.3 and 3.0 (honeycomb, tablet).

Features

  • Two chart types Line Chart and Bar Chart.
  • Draw multiple series of data Let the diagram show more that one series in a graph. You can set a color and a description for every series.
  • Show legend A legend can be displayed inline the chart. You can set the width and the vertical align (top, middle, bottom).
  • Custom labels The labels for the x- and y-axis are generated automatically. But you can set your own labels, Strings are possible.
  • Handle incomplete data It's possible to give the data in different frequency.
  • Viewport You can limit the viewport so that only a part of the data will be displayed.
  • Scrolling You can scroll with a finger touch move gesture.
  • Scaling / Zooming Since Android 2.3! With two-fingers touch scale gesture (Multi-touch), the viewport can be changed.
  • Background (line graph) Optionally draws a light background under the diagram stroke.
  • Manual Y axis limits

How to use

View GraphView page http://www.jjoe64.com/p/graphview-library.html

Very simple example:

// init example series data
GraphViewSeries exampleSeries = new GraphViewSeries(new GraphViewData[] {
          new GraphViewData(1, 2.0d)
          , new GraphViewData(2, 1.5d)
          , new GraphViewData(3, 2.5d)
          , new GraphViewData(4, 1.0d)
});

GraphView graphView = new LineGraphView(
      this // context
      , "GraphViewDemo" // heading
);
graphView.addSeries(exampleSeries); // data

LinearLayout layout = (LinearLayout) findViewById(R.id.layout);
layout.addView(graphView);

Important

To show you how to integrate the library into an existing project see the GraphView-Demos project! See GraphView-Demos for examples. https://github.com/jjoe64/GraphView-Demos
View GraphView page http://www.jjoe64.com/p/graphview-library.html

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