|
 Re: SurfaceChart data point highlighting |
| Posted by Peter Kwan on Jan-09-2018 14:01 |
|
Hi Michael,
Have you tried the exact original code in the thread:
http://www.chartdir.com/forum/download_thread.php?bn=chartdir_support&pattern=merge&thread=1382004235#N1468520030
The above code should create a chart image "aaa.png". Does it include the scatter symbols in your case?
When you use the above method in your code, have you started from the line "c->layout();". The code would not work without this line.
Another method to add a shape to the chart is to simply draw a polygon with the DrawArea object. It is like:
.... create 3D surface chart as usual ....
// Draw the 3D surface chart, and obtain the DrawArea object
DrawArea *d = c->makeChart();
// Draw a polygon on top of the surface
double x = c->getXCoor(0, 0, 0);
double y = c->getYCoor(0, 0, 0);
double diamondX[] = { x, x + 5, x, x - 5 };
double diamondY[] = { y - 5, y, y + 5, y };
d->polygon(DoubleArray(diamondX, 4), DoubleArray(diamondY, 4), 0xff0000, 0xff00ff);
Regards
Peter Kwan |
| Re: SurfaceChart data point highlighting |
| Posted by Michael P on Jan-09-2018 16:25 |
|
Well, the problem was indeed the missing c->layout() ...
now it works, thanks again! |
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