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Enabling study layout in JavaScript generated axes [message #709023]

Wed, 03 August 2011 08:09

Eclipse User

My report has a set of line charts, each of which needs to be annotated with additional series that are created based on the parameter selection. The logic behind it is currently residing in beforeFactory() and dataset's onFetch() method. Rather than just adding the new line series to the main section of the chart, I want to create an additional Y-axis with study layout (as introduced in BIRT 2.5) and add my new line series to it. This is the shortened version of the code:

cht = reportContext.getDesignHandle().findElement("All criteria chart");
mychart = cht.getReportItem().getProperty( "chart.instance" );
xAxis =mychart.getAxes().get(0);

yAxis1 = xAxis.getAssociatedAxes().get(0);
yAxis2 = AxisImpl.create( Axis.ORTHOGONAL );

xAxis.getAssociatedAxes( ).add( yAxis2 );
//mychart.setStudyLayout(true);

//create new line series here...

This works and adds the new line series, but as soon as I set the Study Layout, the axis labels and markers for existing axes (xAxis and yAxis1) dissappear!

Any idea what is going wrong?

Re: Enabling study layout in JavaScript generated axes [message #709137 is a reply to message #709023]

Wed, 03 August 2011 10:27

Eclipse User

Take a look at this example.

Jason

On 8/3/2011 8:09 AM, vasa.curcin wrote:
> My report has a set of line charts, each of which needs to be annotated
> with additional series that are created based on the parameter
> selection. The logic behind it is currently residing in beforeFactory()
> and dataset's onFetch() method. Rather than just adding the new line
> series to the main section of the chart, I want to create an additional
> Y-axis with study layout (as introduced in BIRT 2.5) and add my new line
> series to it. This is the shortened version of the code:
>
> cht = reportContext.getDesignHandle().findElement("All criteria chart");
> mychart = cht.getReportItem().getProperty( "chart.instance" );
> xAxis =mychart.getAxes().get(0);
>
> yAxis1 = xAxis.getAssociatedAxes().get(0);
> yAxis2 = AxisImpl.create( Axis.ORTHOGONAL );
>
> xAxis.getAssociatedAxes( ).add( yAxis2 );
> //mychart.setStudyLayout(true);
>
> //create new line series here...
>
> This works and adds the new line series, but as soon as I set the Study
> Layout, the axis labels and markers for existing axes (xAxis and yAxis1)
> dissappear!
>
> Any idea what is going wrong?

Attachment: StudyChartAdd.zip
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Re: Enabling study layout in JavaScript generated axes [message #709160 is a reply to message #709137]

Wed, 03 August 2011 11:14

Eclipse User

Thanks Jason. I copied all the steps, the two things missing were shifting the series palette and invoking yAxis2.getSeriesDefinitions().clear(), however the problem still remains. Could the issue be caused by the X axis being grouped on dates? It doesn't affect the non-study layout though.

Re: Enabling study layout in JavaScript generated axes [message #709200 is a reply to message #709160]

Wed, 03 August 2011 12:02

Eclipse User

Are you using optional grouping or just the normal grouping on x-axis?
Can you try setting the labels explicitly:
yAxis.setType( AxisType.LINEAR_LITERAL );
yAxis.getMajorGrid( ).setTickStyle( TickStyle.RIGHT_LITERAL );
yAxis.setLabelPosition( Position.RIGHT_LITERAL );

Also try to add the second axis in the guid and put a series on it. Do
the labels show up then?

Jason

On 8/3/2011 11:14 AM, vasa.curcin wrote:
> Thanks Jason. I copied all the steps, the two things missing were
> shifting the series palette and invoking
> yAxis2.getSeriesDefinitions().clear(), however the problem still
> remains. Could the issue be caused by the X axis being grouped on dates?
> It doesn't affect the non-study layout though.

Re: Enabling study layout in JavaScript generated axes [message #709263 is a reply to message #709200]

Wed, 03 August 2011 13:57

Eclipse User

I am using normal grouping on X-axis.

When I add a second axis using the Designer (using different data for the second series, but same starting chart), the behaviour is exactly the same, e.g. it appears normal when study view is deselected, but as soon as I switch it on the labels disappear from the X-axis and the original Y-axis.

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