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  Graph Type COLUMN and BoxWhiskerLayer
Posted by Rico Sager on Aug-23-2012 19:54
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Hi,
I have a bar chart (layer) and I have more than one column bars for one value on the x axis. I use a box whisker layer to show a target value line for a column bar. One target value belongs to exactly one column.

The problem is that the mark lines of the box whisker layer are always painted over all(!) columns of an x axis value. I only want to paint a mark line only for/over that column bar to where it belongs.

Is there a possibility how I can solve this problem without such things like "chart.addLine"?

Rico
column bar mark line example.png

  Re: Graph Type COLUMN and BoxWhiskerLayer
Posted by Peter Kwan on Aug-24-2012 02:37
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Hi Rico,

You may use the Layer.alignLayer method to align the box-whisker symbol to a bar. It is like (in PHP):

$layer = $c->addBoxWhiskerLayer(null, null, null, null, $myData);
$layer->alignLayer($myBarLayer, 1);
$layer->moveFront();
$layer->setDataGap(1 - 0.75 / 2);

Hope this can help.

Regards
Peter Kwan