Steema Central

Posted: **Thu Jun 10, 2010 2:13 pm**

I am finding it difficult to create a line graph with nice smooth lines between points. For example, in the TChart below I consider the lines to be very "jagged":

: jaggedlines.JPG (18.55 KiB) Viewed 2881 times

Below is a graph I found off another website:

: goodgraph.JPG (11.07 KiB) Viewed 2880 times

(see it for real: http://www.maani.us/xml_charts/index.ph ... bmenu=Line )

I just can't seem to create charts which have nice smooth lines. It seems a lot of other graphic solutions are rendering charts with much greater eye appeal.

Posted: **Fri Jun 11, 2010 1:06 pm**

Hi mSchenkel,

You could use AntiAlias to get nicer smoothed lines:

: chart.png (33.8 KiB) Viewed 2855 times

Code: Select all

uses Series, TeeAntialias, TeeThemes;

procedure TForm1.FormCreate(Sender: TObject);
var AntiAliasCanvas: TAntiAliasCanvas;
    i: Integer;
begin
  Chart1.View3D:=false;

  AntiAliasCanvas:=TAntiAliasCanvas.Create;
  Chart1.Canvas:=AntiAliasCanvas;

  ApplyChartTheme(TBlackIsBackTheme, Chart1);

  for i:=0 to 1 do
  with Chart1.AddSeries(TFastLineSeries) as TFastLineSeries do
  begin
    Pen.Width:=2;
    FillSampleValues;
  end;
end;

Steema Central

Lines are jagged

Lines are jagged

Re: Lines are jagged