Peter Kwan wrote:

Hi Massimo,

You can use XYChart.setClipping. For example:

c.setClipping();

Hope this can help.

Regards
Peter Kwan

Peter Kwan wrote:

Hi Massimo,

In ChartDirector, the value 0 is treated as 0, and no value is Chart.NoValue. Does your code use Chart.NoValue to represent "no value"?

Note that if your code creates an array, but leave some array positions unfilled, those positions will contain the "default value" as according to your programming language. In C++, the default value is undefined and in practice, it is a random number. In C#, VB and Java, the default value is 0. In any case, the "default value" is not "no value". So your code must explicitly fill the "no value" positions with Chart.NoValue, or it can initialize the array to contain all Chart.NoValue.

Hope this can help.

Regards
Peter Kwan

Peter Kwan wrote:

Hi Massimo,

The exact behaviour depends on the chart type. For line layer or spline layer, the behaviour is configurable. See:

http://www.advsofteng.com/doc/cdnet.htm#missingpoints.htm

In brief, for a line layer or spline layer, ChartDirector will join the line segment through the missing points. The line color can be different for line segments that join through missing points, and can be transparent, in which case it will become an interrupted line.

Note that for your chart, if you use an interrupted line, nothing will be drawn. It is because each of the 3 data points in your chart are separate with missing data points on both the left and right sides. That means the line is interrupted on both sides, so no line segments can be drawn through the point. To make the data points visible, you may want to add data symbols for the points like in the above sample code.

Hope this can help.

Regards
Peter Kwan

Peter wrote:

layer1.addDataSet(data1, 0x00ff00, "Atom Synthesizer").setDataSymbol(Chart.GlassSphere2Shape, 11);