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m610 · Guest

Is there a way in TChart to "pick up the pen" momentarily while
plotting a line? Basically, I'd like to include gaps in the line I'm
plotting.

Specifically, I'm using line and fastline series to plot my data and I
want to draw the line only while the x-value is increasing, not draw
it when the x-value is decreasing, and then resume drawing when the x-
value is increasing again.

Splitting this up onto multiple series seems impractical.

Thanks.

m610 · Guest

I found the AddNullXY function but it doesn't seem to work. Is it
available in TChart 4 (Delphi 6)?

My (simplified) code is:
x0:=X[,j];
for i:=j to k do
begin
if X[i]>=x0 then
begin {Plot the lines}
Series1.AddXY(X[i],Y[i]);
Series2.AddXY(X[i],Y[i]);
end
else
begin {Plot a gap in the lines}
Series1.AddNullXY(X[i],Y[i]);
Series2.AddNullXY(X[i],Y[i]);
end;
x0:=x;
end;

On May 15, 10:50 am, m610 <mlme...@sbcglobal.net> wrote:

m610 · Guest

The search continues, and it looks like others found that AddNullXY
didn't work. It was confirmed that this was a bug, back in 1999.