Marks, vertical and aligned to upper border of chart

[to2]

Hello,

I'd like to have all marks vertical (content readable from the right side) and attached to the upper border of the chart.

I've done the following:

• Series->Marks->Angle = 90
• In Series->AfterDrawValues

  Code: Select all

  int num_pos = Series->Marks->Positions->Count;
   for (int i = 0; i < num_pos; ++i)
    Series->Marks->Positions->Position[i]->LeftTop.y = 0;
  

Result: Marks are rotated but not aligned to upper chart border. How can I move the marks there?

CB2010, TC 8.06, Win7 32

[Yeray]

Hi to2,

You also have to change the Custom property:

Code: Select all

Series->Marks->Positions->Position[i]->Custom = True;

If you still have troubles with it, don't hesitate to let us know.

[to2]

You also have to change the Custom property:

I did so. 3 new problems occur:

1. It seems as if the y=0 position is set when the mark is not rotated, after that the 90° rotation is performed around a center which is the center of the mark. Result: the marks don't have their LeftTop at y=0 but their "LeftCenter". The vertical center of the mark is at y=0 and the LeftTop is outside of the chart area.
2. ArrowLength doesn't follow to the new position of mark.
3. If I scroll the BottomAxis then marks and arrows don't follow to the new position of the series.

[to2]

I wonder if I could get the desired behaviour by keeping Custom = false and modifying the ArrowLength of each mark instead. Is there an event fired, before a mark is drawn, so that I can calculate the mark dimensions and set the ArrowLength accordingly?

[to2]

What are

• TSeriesMarkPosition::MidPoint and
• TSeriesMarkPosition::HasMid

for? I can't find information about these properties in my online help.

[to2]

Got it working. Have to set many things (ArrowFrom, ArrowTo, LeftTop ...) manually. Have to consider that mark's width and height are measured before rotation. But finally it does what I want.

[Yeray]

Hi to2,

I'm glad to see you found it. If you still have any problem, regarding this or not, don't hesitate to let us know.