Map With Dot Density Layer

Description

The dot density is added as a feature layer to the named map, and specifically a style modifier theme. Each dot theme has a density value expression (the attribute in the feature to perform the density theme), a value per dot (the numerical value that represents a dot for the attribute), and a dot style (the style to display the dots).

For more information on dot density themes, see Dot Density Theme.

Example

This is an example of a named map definition that contains a dot density layer.


<?xml version="1.0" encoding="UTF-8"?>
<NamedMapDefinition version="MXP_NamedResource_1_5" xmlns="http://www.mapinfo.com/mxp" xmlns:gml="http://www.opengis.net/gml">
	<ConnectionSet xmlns="http://www.mapinfo.com/mxp" />
	<DataSourceDefinitionSet xmlns="http://www.mapinfo.com/mxp">
		<NamedDataSourceDefinitionRef id="id4" resourceID="/NamedTables/STATES" />
	</DataSourceDefinitionSet>
	<MapDefinition id="id1" name="STATES Map" alias="Map17204816" xmlns="http://www.mapinfo.com/mxp">
		<DisplayConditions>
			<MapSize uom="mapinfo:imagesize pixel">
				<ImageWidth>996</ImageWidth>
				<ImageHeight>714</ImageHeight>
			</MapSize>
			<ZoomAndCenter>
				<MapZoom uom="mapinfo:length mi">759.612</MapZoom>
				<gml:Point srsName="mapinfo:coordsys 1,62">
					<gml:coordinates>-76.272763,43.045175</gml:coordinates>
				</gml:Point>
			</ZoomAndCenter>
			<DisplayCoordSys>
				<SRSName>mapinfo:coordsys 1,62</SRSName>
			</DisplayCoordSys>
			<ResizeMethod>preserveZoom</ResizeMethod>
			<RasterConditions dither="halfTone" trueColor="true" optimizeRasterLayers="screen" optimizeVectorLayers="screen" rasterReprojectionResampling="nearestNeighbor" rasterReprojection="none" />
		</DisplayConditions>
		<LayerList>
			<FeatureLayer id="id5" name="STATES" alias="STATES" volatile="unknown">
				<DataSourceRef ref="id4" />
				<FeatureStyleModifierThemeList>
					<FeatureStyleDensityTheme id="id6" alias="Dot Density Theme id6" name="Dot Density with Pop_Other">
						<DensityValueExpression>
							<NumericValueExpression>
								<AttributeName>Pop_Other</AttributeName>
							</NumericValueExpression>
						</DensityValueExpression>
						<ValuePerDot>79000</ValuePerDot>
						<DotStyle>
							<PointStyle>
								<FontSymbol text="&quot;" size="1" size-unit="mapinfo:length pt" stroke="rgb(0,255,128)" stroke-opacity="1" family="MapInfo 3.0 Compatible" />
							</PointStyle>
						</DotStyle>
					</FeatureStyleDensityTheme>
					<FeatureStyleDensityTheme id="id7" alias="Dot Density Theme id7" name="Dot Density with Pop_Urban">
						<Visibility visible="false" />
						<DensityValueExpression>
							<NumericValueExpression>
								<AttributeName>Pop_Urban</AttributeName>
							</NumericValueExpression>
						</DensityValueExpression>
						<ValuePerDot>560000</ValuePerDot>
						<DotStyle>
							<PointStyle>
								<FontSymbol text="&quot;" size="4" size-unit="mapinfo:length pt" stroke="rgb(255,0,0)" stroke-opacity="1" family="MapInfo 3.0 Compatible" />
							</PointStyle>
						</DotStyle>
					</FeatureStyleDensityTheme>
					<FeatureStyleDensityTheme id="id8" alias="Dot Density Theme id8" name="Dot Density with Pop_1980">
						<DensityValueExpression>
							<NumericValueExpression>
								<AttributeName>Pop_1980</AttributeName>
							</NumericValueExpression>
						</DensityValueExpression>
						<ValuePerDot>480000</ValuePerDot>
						<DotStyle>
							<PointStyle>
								<FontSymbol text="&quot;" size="4" size-unit="mapinfo:length pt" stroke="rgb(0,0,0)" stroke-opacity="1" family="MapInfo 3.0 Compatible" />
							</PointStyle>
						</DotStyle>
					</FeatureStyleDensityTheme>
				</FeatureStyleModifierThemeList>
			</FeatureLayer>
		</LayerList>
	</MapDefinition>
</NamedMapDefinition>