Package lejos.robotics.mapping

Class ShapefileLoader

  • public class ShapefileLoader
extends java.lang.Object

    This class loads map data from a Shapefile and produces a LineMap object, which can be used by the leJOS navigation package.

    There are many map editors which can use the Shapefile format (OpenEV, Global Mapper). Once you have created a map, export it as Shapefile. This will produce three files ending in .shp .shx and .dbf. The only file used by this class is .shp.

    NOTE: Shapefiles can only contain one type of shape data (polygon or polyline, not both). A single file can't mix polylines with polygons.

    This class' code can parse points and multipoints. However, a LineMap object can't deal with points (only lines) so points and multipoints are discarded.

    Author:
    BB

    • Constructor Summary

      Constructors 
      Constructor Description
      ShapefileLoader​(java.io.InputStream in)
      Creates a ShapefileLoader object using an input stream.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      LineMap readLineMap()
      Retrieves a LineMap object from the Shapefile input stream.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • ShapefileLoader

        public ShapefileLoader​(java.io.InputStream in)
        Creates a ShapefileLoader object using an input stream. Likely you will use a FileInputStream which points to the *.shp file containing the map data.
        Parameters:
        in -

    • Method Detail

      • readLineMap

        public LineMap readLineMap()
                    throws java.io.IOException
        Retrieves a LineMap object from the Shapefile input stream.
        Returns:
        the line map
        Throws:
        java.io.IOException