Dynamically / Programmically create chart ColumnSeries

[drkshih]

Hi, I want to dynamically create the chart column series in a column chart. If
example, according to the selection in a ComboBox, I need to populate chart
with one column or two columns of information per category. Also, I want to
dynamically assign a color to each column. Is it doable?

Thanks,
Derek

[peterent]

Each chart has a series property which is an Array of all of the series
(surprise). You can add new series dynamically using addItem:

var column = new ColumnSeries();
column.yField = "population"; // assuming that is the field in the
dataProvider you want to graph
// set other ColumnSeries values, see the Flex documentation
column.setStyle("fill", new SolidColor(0xFF0000,100)); // bright red
column.setStyle("renderer", new SimpleBoxRenderer); // only if you don't want
a ShadowBoxRenderer which is the default
myChart.series.addItem(column);

For the fill, you can also use a Gradient - see the Flex documentation for
details.

[drkshih]

Great. That's what I want. So for CatesianChart, I can add both ColumnSeries
and LineSeries to myChart.seriers, right?
Ok, now if I want to add a horizontal line across the chart, say like 'y=100'.
I need to apply this kind of line to indicate a 'target' or in a control chart.
Is it doable?

Thanks,
Derek