Graduated Symbol Theme Definition

This is an example of a definition for a graduated symbol theme:


<ObjectThemeLayer
    id="id5"
    name="Graduated Symbol Theme"
    alias="Graduated Symbol Theme id5">
    <DataSourceRef ref="id4" />
    <FeatureGraduatedSymbolTheme id="id7">
        <Alignment>
            <HorizontalAlignment>center</HorizontalAlignment>
            <VerticalAlignment>center</VerticalAlignment>
        </Alignment>
        <SymbolBaseSize useScale="false">
            <MapScale>1</MapScale>
            <DataValueAtSize>23</DataValueAtSize>
            <PositiveSymbol>
                <PointStyle>
                    <FontSymbol
                        text="&quot;"
                        size="36"
                        size-unit="mapinfo:length pt"
                        stroke="rgb(255,0,0)"
                        stroke-opacity="1"
                        family="MapInfo 3.0 Compatible" />
                </PointStyle>
            </PositiveSymbol>
            <SymbolGraduation>sqrt</SymbolGraduation>
        </SymbolBaseSize>
        <SymbolLayout />
        <NumericValueExpression>
            <AttributeName>Indust_Growth</AttributeName>
        </NumericValueExpression>
    </FeatureGraduatedSymbolTheme>
</ObjectThemeLayer>