override which series appears in legend

[WCantrall]

Is there a way to exclude a series from appearing in the legend? It must remain visible.

[Yeray]

Hello,

Is there a way to exclude a series from appearing in the legend? It must remain visible.

I've just added it to the wish list to be implemented in future releases:
http://bugs.teechart.net/show_bug.cgi?id=731
Feel free to add your mail to the CC list to be automatically notified when an update arrives.

[amjonas]

Has this been implemented yet?

We're porting some TeeChart_PHP scripts to Javascript / HTML5 and rely on it quite heavily. Happy to test a beta version, as our system won't be going live immediately.

Alternatively, is there a way to override a legend draw method/event?

Kind regards

Mark

[Yeray]

Hi Mark,

I'm afraid it hasn't been implemented yet.
I've incremented the issue Importance so it can be reviewed asap.

[amjonas]

I've implemented a crude "showInLegend" into javascript version 2014.07.31.1.7 (attached) if that's of any help to anyone?

Hopefully it can be tidied up adopted in the main source

Mark

[Yeray]

Hi Mark,

I've removed the attachment in your post because it contains a the TeeChart sources.
We'll study your implementation and we'll be back to you here asap.

**** EDIT ****
For those customers interested in the implementation Mark has just proposed, I'll try to explain it here:
1. Initialize the property at Tee.Series:

Code: Select all

Tee.Series=function(o,o2) {
  this.chart=null;
  this.data={ values:[], labels:[], source:null }

  this.yMandatory=true;
  this.horizAxis="bottom";
  this.vertAxis="left";
  this.showInLegend=true;	//AMJ: added ShowInLegend
  //...

2. Add the appropriate condition at drawSeries:

Code: Select all

  this.drawSeries=function(index,order) {
    var s=chart.series.items[index];
    if ((this.showHidden || s.visible) && s.showInLegend) {	//AMJ: added ShowInLegend
      this.drawItem(s.titleText(index),s,order,true);
      return true;
    }
    else
      return false;
  }

3. Change itemsCount accordingly:

Code: Select all

  this.itemsCount=function() {
    //...
    if ((st==="values") && (result>0))
       result=ss.firstVisible().legendCount();
    else
    {
      if (((st==="auto") && (result>1)) || (st==="series")) {    //AMJ: added ShowInLegend - remove count where not showInLegend?
        var t;
        for(t=0; t<ss.items.length; t++)
          if (!ss.items[t].showInLegend) result--;
      }
      else
      if (result==1)
        result=ss.firstVisible().legendCount();
    }
    //...

[amjonas]

I've removed the attachment in your post because it contains a the TeeChart sources.

Whoops - Sorry - didn't think!

[Yeray]

Hi,

Whoops - Sorry - didn't think!

No worries. I've edited the post above to show your proposal.

Thanks for sharing it!

[amjonas]

There have been two releases of Javascript/HTML5 since this post, and it's not been implemented in the core.

Any problems with the implementation? it matches VCL/PHP which we also use.

Slightly bored of continuing to have to update the new releases!

Mark

[Yeray]

Hello Mark,

Excuse us for the delay here.
I've added your implementation to the internal sources so the next maintenance release with include it.

[Yeray]

Hello,

Note we decided to change showInLegend for legend.visible.
So with the next update you'll be able to do:

Code: Select all

Chart1.series.items[0].legend.visible=false;