[SOLVED] multipage horizontal bar chart

[leniviy]

I need a horizontal bar chart having fixed width bars and multiple pages. Looks like I need to place the chart onto the detail band so its duplicated for each row, but how do I make it render only 1 bar for the current row?

CATEGORY ACTIVE_NUMBER TOTAL_COUNT-------- ------------- -----------a                  100        1000b                  200        1000c                  300        1000d                  400        1000e                  500        1000

This should give 5 separate charts having 1 bar

http://jasperforge.org/uploads/forum/101/77386/chart.png

Post Edited by leniviy at 08/03/2010 06:25

Post Edited by leniviy at 08/03/2010 11:10

[leniviy]

I found 2 ways to do this.

If I want the chart to have only 1 bar for the current row, I create a group "rownumgroup" with expression: $V{REPORT_COUNT} . Then in chart data set "Reset Type" to "Group" and "Reset group" to "rownumgroup".

To make the value axis not visible I have to use the customizer.

 

 

 

Another way is to restrict number of lines per page

To have 3 results per page add group rowsperpage with expression:

new Integer( (int) ( ($V{REPORT_COUNT}.intValue()-1) / 3 ) )

and mark it to start new group on a new page.

In this case the chart has to be placed in the page header band, not details band.

A customizer is still needed to call the renderer setMaximumBarWidth(), or the last page will contain very thick bars.