|
 Suggestion: New chart type - Venn Diagram |
| Posted by J Kay on May-15-2010 00:38 |
|
Hi,
The subject says it all really. Venn Diagrams would be a great addition to a fantastic charting tool.
Kind regards,
Jon. |
| Re: Suggestion: New chart type - Venn Diagram |
| Posted by Peter Kwan on May-15-2010 03:22 |
|
Hi J Kay,
You may be able to draw simple Venn diagrams by simply drawing circles and text (using DrawArea.circle and DrawArea.text or BaseChart.text).
It is like:
$c = new XYChart(....);
$d = $c->getDrawArea();
$d->circle(....);
$d->circle(....);
$c->addText(.....);
$c->addText(.....);
....
Hope this can help.
Regards
Peter Kwan |
| Re: Suggestion: New chart type - Venn Diagram |
| Posted by J Kay on May-17-2010 17:05 |
|
Hi Peter,
Yes that's true but they would be *very* simple - without color since there seems to be no way to change the circle fill color where the sets intersect. I think it could soon become a lot of work using the CD 'primatives', especially for 4+ sets (although 5 is a reasonable limit) - hence my suggestion.
Jon. |
| Re: Suggestion: New chart type - Venn Diagram |
| Posted by Peter Kwan on May-17-2010 21:59 |
|
Hi J Kay,
The only easy way to have the intersection being a different color is to use semi-transparent colors for the circles. In this case, the overlapping region will be a mixture of the filling colors.
Regards
Peter Kwan |
| Re: Suggestion: New chart type - Venn Diagram |
| Posted by J Kay on May-18-2010 18:40 |
|
That's interesting, I will experiment with that. I still think the suggestion is valid (I suspect dealing with increasing numbers of sets could become quite complicated) - just give CD the data & text and let it make a nice diagram!
Jon. |
|
Forum Home
Search
Message List
Post Message