Limit Hotspots That are Generated in an Analysis Studio or Report Studio Chart

To improve performance, you can limit the number of hotspots that are generated for Analysis Studio and Report Studio charts.

A hotspot in a chart appears when you pause a pointer over it. For example, a hotspot on a drill-down symbol or a tooltip gives details about the column, line, or pie slice. The browser response time increases with the number of hotspots. When charts with many members are generated, the hotspots can become an additional burden for the system resources, which can freeze the browser.

When you limit the number of hotspots, priority is given to items such as axis labels and legend labels before individual graphical elements such as bars, pie slices, and so on. Depending on the number of items in a chart and the setting for maximum number of hotspots, some axis items may have hotspots while other axis items and all graphical elements do not, or all axis items and some graphical elements may have hotspots while other graphical elements do not.

The maximum hotspot setting in Report Studio overrides this setting. For more information, see the IBM Cognos Report Studio User Guide.

The default is an unlimited number of hotspots.

Procedure

Start IBM® Cognos® Connection.
In the upper-right corner, click Launch, IBM Cognos Administration.
On the Status tab, click System.
Click the arrow for the Actions menu next to System and click Set properties.
Tip: You can also change the hotspot setting at the dispatcher or service level.
Click the Settings tab.
Select Tuning from the Category list.
Locate the Number of hotspots generated in a chart by the Batch report service or the Number of hotspots generated in a chart by the Report service setting. In the Value column, click the arrow next to Unlimited and then click <Number>. Type a new value for the maximum number of hotspots
Click OK.