When we use TChart7 in app - it can't handle 69000 points

Gauge · Post by **Gauge** » Thu Oct 20, 2005 8:15 pm

Hi,

the picture of the problem is simple:

There is old application in Delphi7 + regular TeeChart4 - it works fine with 69000 data points to maintain, but when we installed TeeChart7 our program does not work properly.

when I trace the app code I foind that from this part:

Code: Select all

  if fromElapsedToCalendar then
    for i := 2 to DBChart1.SeriesCount - 1 do
    begin
      DBChart1.Series[i].XValues.DateTime := true;
      for j := 0 to DBChart1.Series[i].XValues.Count - 1 do
        DBChart1.Series[i].XValues[j] := DBChart1.Series[i].XValues[j] / TmConversionFactor + StartTime;
    end;

it jumps to TeeProc..TeeEngine....but never returns back to our source code.

We have 4 Series in our chart with 69000 points in each. Old TeeChart4 executes this code within 5-6 sec, new version DOES NOT at All.

Could you help us to figure out the solution?
Thanks

Narcís · Post by **Narcís** » Fri Oct 21, 2005 8:54 am

Hi Gauge,

It is quite hard to guess which can be the problem without being able to reproduce it. Could you please send us an example we can run "as-is" to reproduce the problem here?

You can post your files at [url]news://www.steema.net/steema.public.attachments[/url] newsgroup.

Thanks in advance.