GetSeriesMark skips transparent point

Gp · Post by Gp » Wed Jan 18, 2006 6:14 pm

I'm using GetSeriesMark to hide or show a marker. I am also adding a transparent point in my fastline series to show a discontinuity. Unfortunately, GetSeriesMark doesn't get called for the transparent point which is a problem for me.

Is this defined behavior? Any workaround?

Narcís · Post by **Narcís** » Thu Jan 19, 2006 3:50 pm

Hi Gp,

Have you tried using fastline series SetNull method? Using this method displays the marks for those points. You can see an example of that at TeeChart's features demo, available at TeeChart program group. The example is "All Features\Welcome !\Chart styles\Standard\Fast Line\Nulls and stairs".

Gp · Post by Gp » Thu Jan 19, 2006 5:25 pm

Same result, I'm afraid. GetSeriesMark still doesn't get called for the null point.

Narcís · Post by **Narcís** » Fri Jan 20, 2006 12:26 pm

Hi Gp,

I've checked that and this is as-designed. However, I've added a request to implement a property like ShowNullMarks for future releases.

In the meantime, you can set the points color being the same as the form or the chart color instead of transparent and make the axis grid lines not visible. Another option is using annotation tools for each mark.