Chart FX 3.0
Tech Support Question
- Q.
I am using Delphi 1.0 with ChartFX 2.0. I am working on a scatter chart (with lines)
and I want dates on the X-axis. How should I do this? If I use the value of a DateField,
it shows a large integer on the X-axis. Also, I don't want to start on date 0/00/00 -
but with the first point being the first date.
- A.
To change the X-axis labels in a scatter chart, you have to process the OnGetLegend
event - as shown in the Help file - to customise Y-axis labels (Y-axis and X-axis
in a scatter chart are very alike).
- Q.
To simulate a regression on a scatter graph, can I, for a second series,
connect a line between the points (or between the first and last points, with
the rest hidden), and make the markers 0 size?
- A.
Yes, you can do that. Although, you don't make the markers "zero size" and you don't
turn ON the CT_POINTS flag for that second series - you use CT_SHOWLINES instead.
- Q.
I have activated tooltips for a bar chart (which is working nicely), but sometimes
they do not appear. Is there a reason for this?
- A.
The tooltips appear only when the chart has the focus.
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