Pie Chart Theme Definition

This is an example of a definition for a pie chart theme:

<ObjectThemeLayer
    id="id5"
    name="Pie Theme"
    alias="Pie Theme id5">
    <DataSourceRef ref="id4" />
    <FeaturePieTheme id="id7">
        <Alignment>
            <HorizontalAlignment>center</HorizontalAlignment>
            <VerticalAlignment>center</VerticalAlignment>
        </Alignment>
        <PieBaseSize useScale="true">
            <MapScale>40653992.6</MapScale>
            <DataValueAtSize>11000000</DataValueAtSize>
            <Diameter uom="mapinfo:length in">1</Diameter>
            <PieGraduation>sqrt</PieGraduation>
        </PieBaseSize>
        <PieLayout graduatedSize="true">
            <PieStartAngle uom="degrees">180</PieStartAngle>
            <PieDirection>clockwise</PieDirection>
            <PieArea>full</PieArea>
        </PieLayout>
        <WedgeDefinitionList>
            <WedgeDefinition>
                <NumericValueExpression>
                    <AttributeName>Pop_Lt_15</AttributeName>
                </NumericValueExpression>
                <AreaStyle>
                    <LineStyle
                        stroke="rgb(0,0,0)"
                        stroke-opacity="1"
                        width="1"
                        width-unit="mapinfo:imagesize pixel">
                        <Pen>mapinfo:pen 2</Pen>
                    </LineStyle>
                    <Interior fill-opacity="1" fill="rgb(255,0,0)" />
                </AreaStyle>
            </WedgeDefinition>
            <WedgeDefinition>
                <NumericValueExpression>
                    <AttributeName>Pop_16_64</AttributeName>
                </NumericValueExpression>
                <AreaStyle>
                    <LineStyle
                        stroke="rgb(0,0,0)"
                        stroke-opacity="1"
                        width="1"
                        width-unit="mapinfo:imagesize pixel">
                        <Pen>mapinfo:pen 2</Pen>
                    </LineStyle>
                    <Interior fill-opacity="1" fill="rgb(0,255,0)" />
                </AreaStyle>
            </WedgeDefinition>
            <WedgeDefinition>
                <NumericValueExpression>
                    <AttributeName>Pop_65Plus</AttributeName>
                </NumericValueExpression>
                <AreaStyle>
                    <LineStyle
                        stroke="rgb(0,0,0)"
                        stroke-opacity="1"
                        width="1"
                        width-unit="mapinfo:imagesize pixel">
                        <Pen>mapinfo:pen 2</Pen>
                    </LineStyle>
                    <Interior fill-opacity="1" fill="rgb(0,0,255)" />
                </AreaStyle>
            </WedgeDefinition>
        </WedgeDefinitionList>
    </FeaturePieTheme>
</ObjectThemeLayer>