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Re: Performance degradation of CFX98 for plots


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Thanks for your help. We will look at this and let you know. Was your

project created in BCB3? Do you still have a copy?

TIA

Joao

Percy Dyer <Cfx98@softwarefx.com> wrote in message

news:aTddYrdaAHA.2400@sfxserver.softwarefx.com...

> Hi,

> I just create a new project with two series and 5000 points each, the time

> to plot the 10,000 points were 3 seconds with a 800MHZ, 128Ram.

> It could be possible the code is producing the delay in your project, to

> confirm I would suggest, just to check the speed, to create a new project

> and feed the chart with a double loop from 0 to 1 and from 0 to 4999 with

> ramdom data.

>

> --

> Regards,

>

> Percy Dyer

> Software FX, Inc. Tech Support

> ================================================

>

> "Joao Ferreira" <nop25278@mail.telepac.pt> wrote in message

> news:8lTkH9PZAHA.1692@sfxserver.softwarefx.com...

> > Hi

> >

> > WinNT4SP5, Pentium III 300MHz 256 Mb RAM, Borland C++ builder V. 3.

> >

> > I am using ChartFX98 for plotting results from an ecosystem model we are

> > developing. I have found that the plotting speed degrades as the

plotting

> > proceeds. For 5000 points, 2 series, in a trivial sample app we

developed

> to

> > illustrate the problem, the time in miliseconds taken to plot the points

> is

> > (in 500 point batches):

> >

> > 5417

> > 7761

> > 9724

> > 11616

> > 12589

> > 13950

> > 15913

> > 17715

> > 18747

> >

> > Even if we turn off message processing in the app, so the points are

only

> > displayed at the end of the plot (which we do not want), the numbers are

> > (for 10 series, each with 5000 points)

> >

> > 80

> > 200

> > 341

> > 450

> > 591

> > 771

> > 1032

> > 1522

> > 2323

> >

> > I am very worried about this, since we have invested a substantial

amount

> of

> > time (and money) in ChartFX as the graphics solution for this

application.

> >

> > I have taken the liberty of copying in a little code below.

> >

> > Many thanks for help/comments.

> >

> > regards

> >

> > J.G.Ferreira

> >

> > 1. Function which loops thru points

> >

> > for(int i=0; i < Samples->Count; i++)

> > {

> > SampleForm = (TForm1 *)Samples->Items[i];

> > if(SampleForm==NULL) continue;

> > SampleForm->AddPoint();

> >

> > Application->ProcessMessages();

> > }

> >

> > while ( Mode==STOP)

> > Application->ProcessMessages();

> >

> > if(Mode == RESET)

> > break;

> > // if (r % 50 == 0)

> > Application->ProcessMessages();

> >

> > 2. Function which calls CFX API

> >

> > void __fastcall TForm1::AddPoint()

> > {

> > long tickVal2;

> >

> > if(tickVal1 == 0)

> > tickVal1 = GetTickCount();

> > if(PointIndex == 0)

> > CFX->OpenDataEx(COD_XVALUES, SeriesCount, 1);

> > else

> > CFX->OpenDataEx(COD_XVALUES | COD_ADDPOINTS, SeriesCount, 1);

> >

> > for(int s=0; s < SeriesCount; s++)

> > {

> > CFX->XValueEx[s][PointIndex] = PointIndex;

> > CFX->ValueEx[s][0] = (s+1) * 10;

> >

> > CFX->ValueEx[s][0] = (s+1) * 10;

> > }

> > CFX->CloseData(COD_XVALUES | COD_SMOOTH | COD_REALTIME);

> >

> > if(PointIndex > 0 && (PointIndex % 500) == 0)

> > {

> > tickVal2 = GetTickCount();

> > Memo1->Lines->Add(IntToStr(tickVal2 - tickVal1));

> > tickVal1 = 0;

> > }

> >

> > PointIndex ++;

> > }

> >

> >

> >

>

>

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