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Marker Styling

Demonstrates how to set different marker style properties based on cities' population and state capital.

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<%@ Page Language="C#" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="dotnetCHARTING.Mapping" %>
<%@ Import Namespace="System.Drawing.Drawing2D" %>

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>.netCHARTING Sample</title>
<script runat="server">

void Page_Load(Object sender,EventArgs e)
{
Chart.Width = 1000;
Chart.Height = 500;
Chart.Title = "marker settings based on population and state capitals (Red marker).";
Chart.TempDirectory = "temp";
Chart.TitleBox.Position = TitleBoxPosition.Full;
Chart.ChartArea.Background = new Background(Color.FromArgb(142,195,236),Color.FromArgb(63,137,200),90);
Chart.Mapping.ZoomCenterPoint = new PointF(38f,-96.5f);
Chart.Mapping.ZoomPercentage = 180;
Chart.Type = ChartType.Map;
Chart.Mapping.MapLayerCollection.Add("../../images/MapFiles/states.shp");
Chart.Mapping.MapLayerCollection[0].DefaultShape.Background.Color = Color.PapayaWhip;

MapLayer layer = MapDataEngine.LoadLayer("../../images/MapFiles/cities.SHP");

// set different marker settings based on population and state capitals.
foreach(Shape shape in layer.Shapes)
{

int population = Convert.ToInt32(shape["POP"]);
string capital = (string)shape["CAPITAL"];
if(capital=="N")
{
shape.Marker.Type = ElementMarkerType.Circle;
shape.Marker.Color = Color.Blue;
}
else
{
shape.Marker.Type = ElementMarkerType.Triangle;
shape.Marker.Color = Color.Red;
}

if(population<10000)
shape.Marker.Size = 1;
else if(population<100000)
shape.Marker.Size = 4;
else if(population<500000)
shape.Marker.Size = 7;
else if(population<2000000)
shape.Marker.Size = 10;
else if(population<3000000)
shape.Marker.Size = 15;
else if(population<5000000)
shape.Marker.Size = 20;
else
shape.Marker.Size = 25;
}

Chart.Mapping.MapLayerCollection.Add(layer);
}

</script>
</head>
<body>
<div style="text-align:center">
<dotnet:Chart id="Chart" runat="server" >
</dotnet:Chart>
</div>
</body>
</html>

<%@ Page Language="vb" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="dotnetCHARTING.Mapping" %>
<%@ Import Namespace="System.Drawing.Drawing2D" %>

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>.netCHARTING Sample</title>
<script runat="server">

Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
Chart.Width = 1000
Chart.Height = 500
Chart.Title = "marker settings based on population and state capitals (Red marker)."
Chart.TempDirectory = "temp"
Chart.TitleBox.Position = TitleBoxPosition.Full
Chart.ChartArea.Background = New Background(Color.FromArgb(142,195,236),Color.FromArgb(63,137,200),90)
Chart.Mapping.ZoomCenterPoint = New PointF(38f,-96.5f)
Chart.Mapping.ZoomPercentage = 180
Chart.Type = ChartType.Map
Chart.Mapping.MapLayerCollection.Add("../../images/MapFiles/states.shp")
Chart.Mapping.MapLayerCollection(0).DefaultShape.Background.Color = Color.PapayaWhip

Dim layer As MapLayer = MapDataEngine.LoadLayer("../../images/MapFiles/cities.SHP")

' set different marker settings based on population and state capitals.
For Each shape As Shape In layer.Shapes

Dim population As Integer = Convert.ToInt32(shape("POP"))
Dim capital As String = CStr(shape("CAPITAL"))
If capital="N" Then
shape.Marker.Type = ElementMarkerType.Circle
shape.Marker.Color = Color.Blue
Else
shape.Marker.Type = ElementMarkerType.Triangle
shape.Marker.Color = Color.Red
End If

If population<10000 Then
shape.Marker.Size = 1
ElseIf population<100000 Then
shape.Marker.Size = 4
ElseIf population<500000 Then
shape.Marker.Size = 7
ElseIf population<2000000 Then
shape.Marker.Size = 10
ElseIf population<3000000 Then
shape.Marker.Size = 15
ElseIf population<5000000 Then
shape.Marker.Size = 20
Else
shape.Marker.Size = 25
End If
Next shape

Chart.Mapping.MapLayerCollection.Add(layer)
End Sub

</script>
</head>
<body>
<div style="text-align:center">
<dotnet:Chart id="Chart" runat="server" >
</dotnet:Chart>
</div>
</body>
</html>

Sample FilenameMarkerStyling.aspx
Version4.0
Uses DatabaseNo

JS Charting

Gallery

Marker Styling