About the map document
ArcGIS StreetMap Premium Middle East and Africa 2021 Release 1 map document (MiddleEastandAfrica.mxd) table of contents is organized into group layers by scale range. Each group layer contains thematic group layers, such as Places, Roads, Boundaries, Hydrology, Landmarks, and so on. These layers include feature density, level of generalization, symbolization, and labeling. Typically there are three or four scale-dependent datasets within each thematic group layer. For example, to show Hydrology the map document (.mxd) uses the MapWaterArea feature dataset that contains the MapWaterArea, MapWaterArea_1, MapWaterArea_2, and MapWaterArea_3 feature classes. At the 1.5M-750k scale, the .mxd uses the MapWaterArea_2 feature class for visualization, whereas at 50â25k scale, the .mxd uses the MapWaterArea feature class. The MapWaterArea feature class is the original feature class while the MapWaterArea_3 feature class is the most generalized version of that feature class with the MapWaterArea_2 feature class somewhere in-between. These generalized layers reduce feature density to decrease symbolization and labeling time.
This scale-dependent approach to layer organization allows all the layers of the same scale range to be contained within a single group layer. The thematic group layers can be easily expanded to show the various datasets available at that scale. This permits an entire group layer or a thematic group within that group layer to be turned on or off with a single click. The layers within a thematic group can also be individually turned on and off. For example, you can turn off the entire 2.5kâ0 scale group layer, just turn off the entire Points of Interest thematic group layer, or just turn off the Parks and Recreation layer in the Points of Interest thematic group layer.
Dynamic label placement is used throughout the entire MiddleEastandAfrica.mxd. The labeling is scale dependent and based on size or importance. For some layers, label classes have been defined but are not turned on.