Line markers

history · Post by **history** » Wed Apr 15, 2009 2:56 pm

we currently plot thousands of points and have opted to go with the fastline for performance reasons. With the number of traces we sometimes display it becomes important to also display a line marker. In version 4 do you support the ability to display markers with the fastline? We don't need to see a marker at every point. We would like to be able to select the option of display x markers per line.

Thanks

Narcís · Post by **Narcís** » Wed Apr 15, 2009 3:05 pm

Hi history,

Could you please clarify which kind of marker would you like to display?

For performance reasons FastLine series doesn't support pointers (Pointer.Visible=true) as Line series does. If you want to plot pointers in a FastLine series you could use a FastLine series together with a Points series for only displaying series pointers.

On the other hand you have different options for setting series marks (Marks.Visible=true):

1. You can plot marks for all series (default behavior).
2. You can plot series marks every x points using the DrawEvery property (tChart1[0].Marks.DrawEvery = 5).
3. You can customize marks text using the GetSeriesMark event and setting to an empty string those marks you don't want to display.