Hi, I have a mx:CartesianDataCanvas:
<mx:annotationElements>
<mx:CartesianDataCanvas
id="volumeColumnForegroundCanvas" />
</mx:annotationElements>
On which I add some data children programmatically:
protected function createDingBats():void
{
// Remove all the data children (dingbats) from the
DataDrawingCanvas in the annotationElements
volumeColumnForegroundCanvas.removeAllChildren();
for each(var dingBatDataItem:EventDTO in
secondDataProvider)
{
var dingBat:DingBat = new DingBat();
dingBat.dingBatDTO = dingBatDataItem;
var create:Boolean = false;
switch(dingBatDataItem.eventType)
{
case "A":
create =
currentAlertType.chartTypeAlert;
break;
case "N":
create =
currentAlertType.chartTypeNewsEvent;
break;
case "O":
create =
currentAlertType.chartTypeOrdNexec;
break;
case "E":
create =
currentAlertType.chartTypeOrdNexec;
}
if(create)
{
// Add the dingbat to the
CartesianDataCanvas in the annotationElements of the volume column chart
volumeColumnForegroundCanvas.addDataChild(dingBat, new
CartesianCanvasValue(dingBatDataItem.eventDate), null, null, new
CartesianCanvasValue(0));
}
}
}
I also have a DateTimeAxis whose minimum and maximum properties are bound to
values that change when a timeline changes its zoom factor
<mx:horizontalAxis>
<mx:DateTimeAxis id="tradeVolumesChartHAxis"
dataUnits="hours"
labelFunction="{hostComponent.dateLabelFunction}"
minimum="{hostComponent.startTime}"
maximum="{hostComponent.endTime}"/>
</mx:horizontalAxis>
If I change the zoom factor, some of the data children get off range (normal).
But when I scroll right or left or reset the zoom factor, they don't appear.
They vanished.
Is there something obvious I am missing ?
Best regards,
Karl.
