Hide legend item

Hi everybody,
 
I have a chart with 3 line series- ls1, ls2 and ls3. All these 3 line series should be visible, but the legend should not show the entry for ls3 (neither the text, nor the miniature icon). How can I achieve this functionality?
I am using BIRT for Java 2.6.1.
 
Thanks,
Souptik

Find more posts tagged with

Comments

pricher

Hi,
 
You can try this code in Chart Scripting:
 
function beforeDrawLegendItem( lerh, bounds, icsc ) 
{ 
 if(lerh.getLabel().getCaption().getValue() == "ls3"){ 
 lerh.getLabel().setVisible(false); 
 bounds.set(0,0,0,0); 
 } else { 
 lerh.getLabel().setVisible(true); 
 } 
} 

where "ls3" is the name of the series you want to hide in the legend.
 
Hope this helps,
 
P.

mogwai

I have found this solution in several topics and it appears to work for everyone except me

. I did simulate this solution in a Classic Cars report and it worked there but not in my report. 
 
I have three series named Abundance, upper and lower. I only want to see the Abundance legend. 
I tried to hide the legend for the 'upper' series using 
 
function beforeDrawLegendItem( lerh, bounds, icsc ) 
{ 
if(lerh.getLabel().getCaption().getValue() == "upper"){ 
lerh.getLabel().setVisible(false); 
bounds.set(0,0,0,0); 
} else { 
lerh.getLabel().setVisible(true); 
} 
 
} 
 
but it is still there. I did a copy and paste of the series label to make sure there wasn't a typo. I have attached my report design but without the database a preview will be difficult. 
 
Any ideas?

pricher

Hi,
 
I couldn't find your report. Please try attaching it again as this will help investigating your issue.
 
P.

mogwai

I can see my report as a downloadable attachment to my comment. I will attach it again here. Hopefully you can see it.

pricher

Based on your design, you are creating 3 Y-Series (Abundance, upper, lower) and then you also have a Y-series grouping on row["type']. When you do this, the legend will have two levels : one level for each Y-series, then sub-levels based on the Y-Series grouping. In other words, your legend should look like this:
 
Abundance
-- Type 1
-- Type 2
upper
-- Type 1
-- Type 2
lower
-- Type 1
-- Type 2
 
The code you are using can only hide the sublevels, in your case, the types. Unfortunately, I have not found a way to detect and hide the Y-Series labels. Maybe someone else will know.
 
Regards,
 
P.

mogwai

I'm a bit stuck on this. I suspect no-one else will respond.
First question is: with what exact code can I hide the sublevels. That isn't working for me either.
Second: do you have any idea how I can escalate this?
 
I really appreciate your help Pierre. This certainly isn't the first time you have assisted me.

pricher

Hi,
 
The code that you have been using should hide the sublevel. In the attached example, the chart is defined with 2 Y-Series (Series 1 and Series 2), an X-Axis Category based on Year, and an optional Y-Series Grouping based on Product Line. The code hides the legend entries for 'Ships' and as you can see, the two entries have been removed:

mogwai

I see how this works. It hides the grouping level in both series, which wouldn't work for me at all. Thanks Pierre. I will create a new post and use your report as an example.