Graph Documentation - Dynamic Methods

Restart

restart() This method will restart the 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();"> NOTE: The graph applet must be named. In this example this is done by adding NAME="GRAPH" to the applet tag:- <APPLET NAME="GRAPH" ........

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);"> NOTE: The graph applet must be named. In this example this is done by adding NAME="GRAPH" to the applet tag:- <APPLET NAME="GRAPH" ........

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". <input type="button" value="Reload Data" onclick="document.applets['GRAPH'].reload_data("http://www.domain,com/chartdata.php", true);"> NOTE: The graph applet must be named. In this example this is done by adding NAME="GRAPH" to the applet tag:- <APPLET NAME="GRAPH" ........

Set a Parameter

set_parameter(String parmname, String value, boolean re_paint) This method enables any Graph Parameter 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);"> NOTE: The graph applet must be named. In this example this is done by adding NAME="GRAPH" to the applet tag:- <APPLET NAME="GRAPH" ........

Size Reset

size_reset(int width, int height, boolean repaint) This method enables the display area (size) of the chart to changed. width - specifies the new width in pixels height - specifies the new height in pixels repaint - specifies whether the graph should be redrawn once the size is changed. Value can be either "true" or "false" e.g. to add a button to your web page which will change the size to 200x200 pixels, <input type="button" value="Set Size" onclick="document.applets['GRAPH'].size_reset(200, 200, true);"> NOTE: The graph applet must be named. In this example this is done by adding NAME="GRAPH" to the applet tag:- <APPLET NAME="GRAPH" ........

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