ArcGIS 10 Desktop Help Network Analyst
The Skinny Road Network tool (Cartography Tools/Generalization), obtainable in ArcGIS 10, provides another way for that digital cartographer to simplify a street feature class, while keeping the integrity and connectivity from the street network. The tool can pare an in depth street’s datasets for medium scale mapping of cities. The tool doesn't really remove features—instead it identifies road segments that may be taken off the map without compromising connectivity or getting rid of high-order routes.
Planning the Roads
Slight modifications are required to prepare the road data to be used being an input towards the Thin Road Network tool.
- Add an Invisibility area
Produce a new integer area and employ the Area Calculator to create the area to . Following the tool is performed streets that needs to be taken off the display are designated something of just one.
- Give a Hierarchy area
The road feature class should have a Hierarchy area. If the attribute must be produced, posted speed limit is really a decent corollary. For example, streets having a posted speed limit of 65 are usually more essential than streets having a posted speed limit of 45. Quantity of lanes or functional class doubles to define hierarchy. The Hierarchy area ought to be an integer area with values from through 5. Streets where Hierarchy = is going to be considered “locked” and can remain visible.
Performing the skinny Road Network Tool
Running the skinny Road Network tool needs a Minimum Length parameter to become defined. This parameter defines a “sense from the resolution or granularity from the resulting simplified road collection (ArcGIS 10 Webhelp).” This value should represent the minimum period of road that's significant enough to incorporate in the ultimate map. The worth relies upon the preferred scale where the street layer is intended to be seen. The tool will set something of just one within the Invisibility area according to an analysis of hierarchy, visibility securing, resolution, and also the morphology and connectivity from the road geometry.
Figure 2: Tool Dialog Box
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