11 October 2006

Cartographic Representations in ArcGIS 9.2 (part 1 of 5)

Mapperz looking into the big changes in ArcGIS 9.2

Generalization requires geoprocessing algorithms and problem solving, which are performed at the topology level before feature symbolization. Tools that can be applied to the most common generalization tasks are currently underway for the following:

  • Simplify polygon.

    click to enlarge

    Removes small fluctuations and extraneous bends while preserving the essential feature shape

  • Simplify building.
    click to enlarge
Removes or simplifies building footprint boundaries while preserving the essential shape and size

  • Aggregate polygon.
    click to enlargeCombines disjoint and adjacent polygons into new area features based on a specified tolerance distance

  • Collapse dual lines to centerlines.
    Derives centerlines, or single lines, from dual-line features, such as road casings, based on a width toleranceclick to enlarge

  • Simplify line.
    click to enlarge

    Now includes an automatic tolerance reduction to prevent geometric errors while removing small fluctuations and extraneous bends

    Using these tools with the ModelBuilder will allow an automated environment for the cartographer.


    Look out for... Cartographic Representations Seminar - Thursday 12th October 2006 (check link for times.)

    Edited and published with Google Writer (beta)

    Some mis-formating and multiple blog postings in draft of the same post, other than that it works...

    update: cleaned up in blogger


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