It is possible to symbolize our artwork even further, at the layer level, by slecting the target symbol for our roads layer (See Adobe Layers Help). If we want to get technical here in considering what has happend to our artwork, using the Appearance panel we can see that each of the paths we initially imported now has a graphic style applied to it on two levels: at the path level (done through MAP Stylesheets) and at the group level (done by grouping and applying a graphic style to the group). The final step is to re-apply the graphic style appropriate to each group using the Adobe Graphic Style panel. Once selected the street classes can be grouped using CTRL+G on your keyboard or Object > Group from the menu (See Adobe Group Help). We can use MAP Selections to individually select each of our road classes. The expressions we created when defining our MAP Stylesheet rules are available to us to use again through the Expression Library (new in MAPublisher 8.3). In order to group our road classes we will have to select the road paths belonging to each class. A set of paths turned into a group will not have their attributes available to MAPublisher while in a group, however these objects can always be ungrouped making individual paths and their original attributes available again. #CARTOGRAPHY ICONS MAPUBLISHER PRO#The consequence of this would be to make automatic labelling with MAPublisher Label Pro impossible. In this case, the street names field would be blank for our compound path object as dozens of streets are turned into one compund path. Grouping is the preferred method for managing these objects since a compund path will delete the attributes of all paths that are being compounded. To look like intersections, each road classification must become one object, whether by being grouped or by turning the various paths into a compound path. This occurs because MAP Stylesheets applies graphic styles at the path level. Once we apply these styles using MAPublisher Stylesheets, we will see what steps we muys take to get the appearance we want. With our graphic styles set I can now apply the MAP Stylesheet I built using the following expressions: These styles all have been created using the Illustrator Apprearance panel to overlay two strokes, the top stroke with a smaller weight and different colour than the bottom stroke (see Adobe Appearance Panel Help). I keep the road styles I have created in a template document titled RoadStyles.ai so that I can import the graphic styles I need into whatever map I’m making from my template (see Adobe Graphic Styles Help). I’ve created a graphic style for each and loaded them using “Open Graphic Style Library”. My road data has a column named “CLASS” with four categories: Controlled, Controlled-Ramp, Highway, and Street. This process works on roads that have an attribute on which you can base classification rules. The workflow for this process involves the use of both MAPublisher and Adobe tools, specifically MAP Stylesheets and MAP Selections along with Illustrator’s Graphic Styles and the Appearance Panel. Here’s a question we receive at Avenza support quite often: I’ve located and imported a GIS layer of road lines with attributes for the city I’m mapping.
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