A chart or graph gives an overview of the data variation in a short and comprehensive way. It also reduces the time to grab the actual data fluctuations or variations and is available in visual form.
It is a diagram displaying the relationship between numbers or amounts. Common graphs use bars, lines, or parts of a circle to display data. Charts and Graphs are mainly used for statistical purposes and play a critical role in many applications.
Here are few tools which can build pretty good looking custom charts or graphs with defined statistics:
PlotKit – Javascript Chart Plotting
PlotKit is a Chart and Graph Plotting Library for Javascript. It has support for HTML Canvas and also SVG via Adobe SVG Viewer and native browser support. PlotKit is a complete rewrite of CanvasGraph. It is better structured and supported. And is well documented with a couple of live demos.
Examples:
PlotKit Dynamic Charting Test – Redrawing values from a dynamic table.
PlotKit Simple Canvas Demo – A self-contained demo in a single file. Use this to get started!
PlotKit Simple SVG Demo – A self-contained demo in a single file. Use this to get started!
Sweet Canvas Test
Sweet SVG Test
Simple Canvas Test
Simple SVG Test
liquidx.net Stats Page
Flot is a pure Javascript plotting library for jQuery
It produces graphical plots of arbitrary datasets on the on-the-fly client-side. The focus is on simple usage (all settings are optional), attractive looks, and interactive features like zooming. Although Flot is easy to use, it is also advanced enough to be suitable for Web 2.0 data mining/business intelligence purposes which is its original application.
The plugin is targeting all newer browsers. If you find a problem, please report it. Drawing is done with the <canvas> tag introduced by Safari and is now available on all major browsers, except Internet Explorer where the excanvas Javascript emulation helper is used.
Examples:
Basic example
Different graph types
Setting various options
Real data with a bit of interactivity
Selection support and zooming
Zooming with overview
Plotting time series
Visitors per day with zooming and weekends
Interacting with the data
Flotr Javascript Plotting Library
Flotr is a javascript plotting library based on the Prototype Javascript Framework (version 1.6.0.2 at the moment) and inspired by Flot (written by Ole Laursen). Flotr enables you to draw appealing graphs in most modern browsers with easy-to-learn syntax. It comes with great features like legend support, negative value support, mouse tracking, selection support, zoom support, event hooks, CSS styling support, and much more.
Examples:
Basic Example
Basic Axis Example
Basic Bar Example
Basic Legend Example
Mouse Tracking Support Example
Mouse Zoom Support Example
Negative Value Support Example
Click Event Hook Example
JSON Data Example
ProtoChart is a new opensource library to plot pretty charts with examples included
ProtoChart is a new open-source library using Prototype and Canvas to create good-looking charts. This library is highly motivated by Flot, Flotr, and PlotKit libraries.
