2D/3D Line Graph Documentation

Restart

restart()

This method will restart the line graph. The data and property files will be re-read the graph re-created.

This method would be useful where it is necessary to refresh the graph display without reloading the entire HTML page.

e.g. to add a button to your web page which will force the graph to refresh:-

<input type="button" value="Refresh" onclick="document.applets['GRAPH'].restart();">

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Set a Data Value

set_datavalue(int datanum, int series, String value, boolean re_paint)

This method enables any of the graph data values to be changed.

datanum - this specifies the bar number within the series to be changed.

series - this specifies which series is to be changed.

value - the value to which this data item should be set.

re-paint - specifies whether the graph should be re-drawn once the data value is set. Value can be either "true" or "false"

e.g. to add a button to your web page which will update the second data value of series 1,

<input type="button" value="Update Data Item" onclick="document.applets['GRAPH'].set_datavalue(2,1,"52.4", true);">

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Reload Data

reload_data(String value, boolean re_paint)

This method enables all the graph data to be reloaded from a file or server side process. This method is particularly useful where you wish the chart data to be refreshed either by a user action or time interval.

value - the URL specifying the location of the data file or server side process supplying the data

re-paint - specifies whether the graph should be re-drawn once the data is loaded. Values may be either "true" or "false".

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Set a Parameter (graph property)

set_parameter(String parmname, String value, boolean re_paint)

This method enables any of the Graph Parameters to be modified dynamically during runtime.

parmname - this is the property name as defined in the Parameters section.

value - the value which this property should be set.

re-paint - specifies whether the graph should be re-drawn once the parameter is set. Value can be either "true" or "false"

e.g. to add a button to your web page which will turn the 3D effect off,

<input type="button" value="3D Off" onclick="document.applets['GRAPH'].set_param('3D', 'false', true);">

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Getting Started

Documentation

• Introduction
• Implementing
• Data and Configuration
• Graph Printing
• JavaScript
• Dynamic Methods
• Data Binding
• Applet or Servlet
• Parameters & Options
• Multi-Language Support
• Further Info

Examples

Tutorials

• HTML Param Tags
• Text Files
• Dynamic Page (DBs)
• Script Interface (DBs)
• Database Bind

Common Problems
This section describes and provides solutions to common problems.

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