procedure TMainForm.FormCreate(Sender: TObject);
var s : TStringList;
begin
// NOTE:
// Most of the following code its not necessary at all.
// Same features can also be done at design-time using the
// TeeChart editor dialog or Object Inspector.
// Do not show Legend, Axes and Walls:
Chart1.Legend.Hide;
Chart1.Axes.Hide;
Chart1.Walls.Hide;
// Cosmetics:
Chart1.Color:=clWhite;
Chart1.View3D:=False;
Chart1.Title.Caption:='USA';
// Match USA map aspect when zooming:
Chart1.Zoom.KeepAspectRatio:=True;
// Create USA map:
USA:=TWorldSeries.Create(Self);
USA.Map:=wmUSA;
USA.Color:=clWhite;
USA.ParentChart:=Chart1;
USA.FillSampleValues;
// Add tools:
Chart1.Tools.Add(TMarksTipTool);
// Import Route 66 KML
Route66:=TLineSeries.Create(Self);
TTeeKMLSource.Load(Route66,'Data\Route66.kml');
Chart1.AddSeries(Route66);
// Cosmetics:
Route66.Pointer.Visible:=True;
Route66.Pointer.Size:=3;
Route66.Pointer.Style:=psCircle;
Route66.Pointer.Pen.Color:=TTeeCanvas.ColorFrom(TAlphaColors.Red,128);
Route66.Pointer.Color:=TAlphaColors.MoneyGreen;
// Nuclear Plants
NuclearPlants:=TPointSeries.Create(Self);
NuclearPlants.Pointer.Size:=2;
TTeeKMLSource.Load(NuclearPlants,'Data\WorldPowerPlants.kml');
Chart1.AddSeries(NuclearPlants);
HidePointsOutsideUSA(NuclearPlants);
// USA Cities
Cities:=TPointSeries.Create(Self);
// Load txt file and add to Cities series:
s:=TStringList.Create;
try
s.LoadFromFile('Data\USACities.txt');
USA.AddPlacemarks(s,Cities);
finally
s.Free;
end;
Cities.Pointer.Size:=2;
Cities.Pointer.Pen.Hide;
Cities.ParentChart:=Chart1; // <-- same as: Chart1.AddSeries(Cities)
// Hide cities in Alaska, etc:
HidePointsOutsideUSA(Cities);
// Populated areas ESRI ShapeFile:
Populated:=TMapSeries.Create(Self);
Populated.ParentChart:=Chart1;
LoadMap(Populated,'Data\ne_50m_urban_areas.shp');
// Change automatic colors of Population area polygons:
Populated.PaletteStyle:=psRainbow;
Populated.UseColorRange:=False;
Populated.UsePalette:=True;
HidePointsOutsideUSA(Populated);
end;
Head over and check out the full blog post about loading GIS map data in TeeChart and then download the Firemonkey demo.
the demo:TeeChart Mapping Data Demo Source Code In Delphi XE6 Firemonkey On Windows And OSX.
The demo is good. but it’s populated area serie created by loadmap() is not label. All polygon’s text is empty. why? How to load label information? Thinks a lot.