About working with symbol layers

This topic applies to ArcEditor and ArcInfo only.

Symbol layers are the building blocks that make up a representation rule. They define how the geometry is displayed for each feature assigned to the rule. Symbol layers are categorized by symbol type—fill, line, or marker—to symbolize polygon, line, and point features, respectively. Each type has a different set of properties that help define the representation rule. Each property can be modified on a feature-by-feature basis during an edit session, creating overrides to the representation rule.

Note:

• If a feature class representation is created by converting a symbolized layer in ArcMap, the symbol layers in a representation rule are automatically created and defined to match the appearance of the original layer.
• The tasks below outline how to manage symbol layers in representation rules from a layer in ArcMap. You can also manage the representation rules in a representation from the feature class itself. Open the Feature Class Properties dialog box in the Catalog window or in ArcCatalog and click the Representation tab to access the properties of representations associated with the feature class.

Symbol layer types

Fill symbol layers symbolize polygon geometry with one of three patterns:

• Solid—Fills polygons uniformly with a single color
• Hatch—Covers polygons with evenly spaced parallel lines
• Gradient—Fills polygons with a smooth transition between two colors in a linear, circular, or rectangular shape or a buffer that follows the contour of the polygon boundary

Line symbol layers symbolize line geometry and polygon outlines with a solid stroke. They are defined by color, line width, cap type, and join type.

Marker symbol layers symbolize points or locations with a representation marker symbol. Representation markers can be a collection of multiple geometry types grouped together into a single graphic symbol. Use the Marker Editor to modify representation markers that can then be saved in the Representation Markers folder in a style.

Learn about stylesLearn how to create and edit representation markers with the Marker Editor

Marker symbol layers are unique in that, along with defining the appearance of a point feature or location with a representation marker, you must also choose and define a marker placement style.

Learn about working with marker placement styles

Symbol layer draw order

The order in which symbol layers appear in the representation rule is the order in which they draw. The tab lowest in the list represents the symbol layer that draws first.

How to add a symbol layer

1. Open the Layer Properties dialog box of the layer containing the representation rule that you want to modify and click the Symbology tab.
2. Ensure the correct representation is selected under the Representations heading.
3. Click the representation rule you want to add a symbol layer to. A box appears around the representation rule.
4. Click the Add New Marker Layer button , the Add New Stroke Layer button , or the Add New Fill Layer button to add the desired symbol layer. The new layer is placed at the top of the list of symbol layers with a tab showing its geometry type. Its properties are populated with default values.

How to modify a symbol layer

1. Open the Layer Properties dialog box of the layer containing the representation rule that you want to modify and click the Symbology tab.
2. Ensure that the correct representation is selected under the Representations heading.
3. Click the representation rule you want to add a symbol layer to. A box appears around the representation rule.
4. Choose the layer you want to modify by clicking a marker layer tab , a line layer tab , or a fill layer tab .
5. Modify the symbol layer properties as necessary by typing or choosing new values.
6. To map a symbol layer property to a field, click the Display Field Overrides button to switch to field mapping view.
7. To add a geometric effect to the symbol layer, click the button on the symbol layer pane to open the Geometric Effects dialog box listing all the available effects.

Tip:

If the symbol layer already contains one or more geometric effects, the button will appear above and below each geometric effect. Geometric effects operate sequentially, so the output of one geometric effect becomes the input of the following one. Click the button that will place the new geometric effect in the desired sequence in the geometric effect chain.

How to reorder symbol layers

1. Open the Layer Properties dialog box of the layer containing the representation rule that you want to modify and click the Symbology tab.
2. Ensure that the correct representation is selected under the Representations heading.
3. Click the representation rule you want to modify. A box appears around the representation rule.
4. Choose the layer you want to reorder by clicking a marker layer tab , a line layer tab , or a fill layer tab .
5. Click the Move Layer Up button or the Move Layer Down button to move symbol layers higher or lower in the draw order.

Deleting symbol layers

1. Open the Layer Properties dialog box of the layer containing the representation rule that you want to modify and click the Symbology tab.
2. Ensure that the correct representation is selected under the Representations heading.
3. Click the representation rule you want to modify. A box appears around the representation rule.
4. Choose the layer you want to delete by clicking a marker layer tab , a line layer tab , or a fill layer tab .
5. Click the Remove Layer button to delete the selected symbol layer from the representation rule.

How to choose a different representation marker symbol

1. Open the Layer Properties dialog box of the layer containing the representation rule that you want to modify and click the Symbology tab.
2. Ensure that the correct representation is selected under the Representations heading.
3. Click the representation rule you want to modify. A box appears around the representation rule.
4. Choose the layer you want to modify by clicking a marker layer tab .
5. Click the image of the representation marker inside the layer pane. The Marker Selector dialog box opens.
6. Choose a different representation marker from the palette or click the More Styles button to navigate to a style that contains representation markers.

Tip:

A marker symbol layer can only have one representation marker. When a marker symbol layer is created, the default representation marker is a black square.