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chart: hide legend entry [message #1061427]

Fri, 31 May 2013 14:48

hage Mising name

Messages: 67
Registered: September 2011

Member

Hi there,

is there a possibility to hide one of several legend entries of a chart? My chart contains 3 series, one is only to visualize a threshold, there is no need to show its legend entry.

I already tried

function beforeGeneration( chart, icsc )
{	
   chart.getLegend().getChildren()...

but that always returns null (obv. because it's before the chart generation), but

function afterGeneration( gcs, icsc )
{
   gcs.getChartModel().get .getLegend().getChildren().getLegend()
}

does not help me either. Any hints appreciated.
Thx in advance,
hage

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Re: chart: hide legend entry [message #1061429 is a reply to message #1061427]

Fri, 31 May 2013 14:55

hage Mising name

Messages: 67
Registered: September 2011

Member

just found a hint, that beforeDrawBlock could be the solution, will try that on monday

(setting visible to false in beforedrawlegenditem does not work for me)

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Re: chart: hide legend entry [message #1061528 is a reply to message #1061429]

Sun, 02 June 2013 03:22

Michael Williams

Messages: 1925
Registered: July 2009

Senior Member

Try this:

function beforeDrawLegendItem( lerh, bounds, icsc )
{
	if(lerh.getLabel().getCaption().getValue() == "yourSeries"){
		lerh.getLabel().setVisible(false);
		bounds.set(0,0,0,0);
	}
}

Michael

Developer Evangelist, Silanis

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Re: chart: hide legend entry [message #1061697 is a reply to message #1061528]

Mon, 03 June 2013 14:16

hage Mising name

Messages: 67
Registered: September 2011

Member

excellent, that does the trick. thank you very much. One addition, once the

lerh.getLabel().setVisible(false);

is called, every "following" entry label is invisible also, so i had to add an else clause like

} else {
	lerh.getLabel().setVisible(true);

which makes all but the one visible again.

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Re: chart: hide legend entry [message #1062491 is a reply to message #1061697]

Sat, 08 June 2013 05:26

Michael Williams

Messages: 1925
Registered: July 2009

Senior Member

Great to hear! You're welcome!

Michael

Developer Evangelist, Silanis

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Re: chart: hide legend entry [message #1733881 is a reply to message #1062491]

Wed, 01 June 2016 19:03

Miguel Orlans

Messages: 4
Registered: April 2016

Junior Member

This code works fine when not using Y-series grouping. Once Y-series grouping is enabled, the sub-entries for each series can be hidden with this code, but not all the legend entries for a specific series.
Does anyone have a solution to hide the entries for one or more series with Y-series grouping?

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Re: chart: hide legend entry [message #1734227 is a reply to message #1733881]

Mon, 06 June 2016 12:18

JÃ¶rg Steffen

Messages: 3
Registered: June 2016

Junior Member

Hi Miguel,

when you are using Y-series grouping, imho you only can use a workaround. I had the same issue some time ago, and I received the following code:

function beforeDrawLegendItem( lerh, bounds, icsc )
{
	var gradient=lerh.getFill().getClass().isAssignableFrom(GradientImpl);
	if (gradient)
		{
			lerh.getLabel().setVisible(false);
			bounds.set(0,0,0,0);
		}
	else
		{
			lerh.getLabel().setVisible(true);
		}
}

You have to insert this into the onRender part of the script for your chart. After that, you have to use gradient coloring in your color palette for the serie you want to hide from legend. You can select the same color for both "ends" of the gradient but you have to use it.

In the example file I added you can see the grey trend line in the chart but hidden in the legend.

I hope this helps.

BR, Jörg

Attachment: example.JPG
(Size: 66.46KB, Downloaded 510 times)

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