How to add dynamic real-time Line Charts to web pages and applications

Line Charts are used to show how two parameters are related to each other. Or to put it another how one variable changes as another changes. A Line chart consists of two axis, a vertical or Y axis and a horizontal or X axis.

The most common use of a line chart is to show how a piece of data varies over time. The X-axis generally represents time whilst the Y-axis represents the value. Point are then plotted for each time interval and the points joined by a line. This provides a visual representation of how the data varied over time.

Of course the x-axis does not have to represent time and in fact can represent anything required. The only requirement is that there is some relationship between the X and Y axis.

The following line chart shows sales figures for a product by month. The line instantly conveys how sales vary throughout the year.

single line chart

The line chart is also very useful as a comparison tool. By plotting multiple series of data on the same grid it becomes very easy to compare the data sets. The following graph shows points scored by three teams over a ten year period.

multiple line chart

A variation on the line chart is the Ribbon Graph. This is basically a 3D version of the line chart.

ribbon chart


Line charts can be used to display a wide variety of data and relationships. In addition to great visual representation of data they also highlight trends in the data. The human eye is particularly adept at spotting patterns and line charts make this process very easy. This makes the line chart a great choice for keeping an eye on important business metrics.

View more Line chart examples here »

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Main Features Summary

  • 2D/3D Graphing Mode
  • Various Data Sources (Files, Databases, Scripts/Server processes, HTML parameters).
  • JavaScript interaction.
  • Printer Friendly
  • Labels On/Off, Font and Color Selectable
  • Target Lines
  • Trend Lines
  • Multiple Plots
  • Configurable Point Symbols
  • Automatic Legend Generation
  • Configurable Number of decimal places to show values
  • Label Orientation
  • Configurable Depth of the 3D effect
  • Display Values on Mouse Over events
  • URL link on Mouse Click Events
  • Free Form Images can be incorporated into the Chart Canvas
  • Free Form Lines of Text can be incorporated into the Chart Canvas