How to Center Crosstab Table?

[gorfimus]

I ave a crosstab table in one of my jasper reports and I want to center it horizontally.  The number of columns in my crosstab table is of course dynamic, so I need a way to center it regardless of the number of columns.

Is this possible?  And if so, how?

[mennei]

 Have you tried to place the crosstab in frame that is centeral in the main report, so the crosstab is subreport. Try to place the crosstab element in the left-top of this subreport, so at the minimum data it will be in the center of the report.

[gorfimus]

Thanks for the suggestion.  I'm not sure it would work.  I already have the crosstab as a subreport and I'm not sure placing the subreport in a frame would make a difference.  I don't see any special positioning properties of a frame element that couldn't already be used by a subreport element.  I could be mistaken though?

I ended up solving this by creating multiple subreports.  For my situation, the number of columns in my crosstab can only vary between 3 and 8 columns, so I have 6 different subreports.  Given the number of columns, I know the actual width of the crosstab when it has 3 columns, 4 columns, etc, so each subreport starts the crosstab at the appropriate x coordinate for its number of columns.  The main report then selects the correct subreport to render, depending on the number of columns in the crosstab.

[mennei]

 How did you configure the main report to select the right subreport?

Thank you for share it here.

[gorfimus]

I used concatenation in the subreportExpression.  The query of the main report determines the number of columns and stores it in a field.  I then use that field in the subreportExpression.

Example:

<subreport>
    ...
    <subreportExpression><![CDATA["subreportName" + $F{columns} + ".jrxml"]]></subreportExpression>
</subreport>

[aleksandras]

It is possible please see:

http://jasperforge.org/plugins/espforum/view.php?group_id=102&forumid=103&topicid=71412