Steema Central

Posted: **Tue Feb 06, 2007 8:57 am**

Hi,

A while ago (like half a year), we post some bug/problem that was "added to your defect list".

I will like to know:
- If I can consult this bug list (i didn't found it)
- When the bug will be fixed. (more or less)

My problems aren't "vital", but I will like to know if the release v8 will fix them.

Thanks for your time,

Link and defect ID:
http://www.teechart.net/support/viewtop ... polydegree
TF02011495

http://www.teechart.net/support/viewtop ... a+overdraw
TV52011730

Posted: **Tue Feb 06, 2007 9:52 am**

Hi Mariano,

We don't have an automatic bug tracking system for the clients. However providing our internal tracker ID makes easier for everyone to track issues.

TF02011495: We reviewed this issue and found that this is an algorithm limitation and can only be solved by using another algorithm for polynomial fitting. The problem is Gaussian algorithm is not all powerful and cannot deal with any number combination. For some combinations (when matrix elements are too similar) the algorithm will fail. For this cases additional check is done before the new values are calculated. If matrix elements are too similar, an exception is raised:

exception (cause « Abs(M[i,i]) < Error » in GaussianFitting). The problem is systematic with this chart.

We have added a request to our wish-list to add other algorithm implementations for polynomial fitting.

TV52011730: This is not a bug, you should add a Tools->ClipSeries tool associated to the area series. This tool does what you want.

Posted: **Tue Feb 06, 2007 1:11 pm**

Hi,

Poly Fitt:

ok. juste so you, know. Meanwhile I did this

Code: Select all

procedure TCustomFittingFunction.AddPoints(Source:TChartSeries);
[...]
        try      PolyFitting(tmpCount,FPolyDegree,IXVector,IYVector,IAnswerVector);
        except
          // added cause in some case (PolyDegree > 7) this raise.
          // (Exception.Create(TeeMsg_FittingError))
          on e:exception do begin
            if e.Message = TeeMsg_FittingError then begin
              if FPolyDegree < 4 then raise; // in case of the problem don't come from this.
              dec(FPolyDegree);
              AddPoints(Source);//retry
            end else
              raise; //other problem
          end;
        end;//try

For the Area, I will look at it later.

thanks for the answer

Steema Central

Pending Bug (Where is the defect list?)

Pending Bug (Where is the defect list?)