Knowledge Base - Technical Articles
Problem: ArcMap's advanced symbology option for transparency by field works only on polygons
|Software:||ArcGIS - ArcEditor 8.3, 8.1, 8.1.2, 8.2, 9.0, 9.1, 9.2, 9.3, 9.3.1 ArcGIS - ArcInfo 8.2, 9.0, 8.0.1, 8.0.2, 8.1, 8.1.2, 8.3, 9.1, 9.2, 9.3, 9.3.1 ArcGIS - ArcView 8.3, 8.1, 8.1.2, 8.2, 9.0, 9.1, 9.2, 9.3, 9.3.1|
Feature transparency can be adjusted based on an attribute field value. The values represent a percent of transparency (1-100).
This is only available for polygon feature layers symbolized using single symbol and unique values.
Solution or Workaround
Use the Effects toolbar to set layer transparency. This is supported for point, line, and polygon feature layers, as well as for raster layers.
- Symbolizing in ArcMap using transparency by field producing inaccurate results
Inaccurate results when using field-based transparency in ArcMap. Example: Mapping US_States by POP90_SQMI and using field-based transparency. Illinois and Georgia are symbolized similarly even though the data values are significantly different...
Last Modified: 5/3/2011
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