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Method for correlating altitude and/or grade information with route points of a digital map

  • US 20050251332A1
  • Filed: 03/21/2005
  • Published: 11/10/2005
  • Est. Priority Date: 03/22/2004
  • Status: Abandoned Application
First Claim
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1. A method for correlating altitude and/or grade information with route points of a digital map, the method comprising:

  • correlating geographic altitude information and/or grade information of a digital geographic map with route points of a digital map;

    deriving, from the correlated geographic information, altitude data of a road of the route points; and

    correcting the correlated geographic information by smoothing the derived altitude data so as to approximate a course of a road to the correlated geographic information, the smoothing being performed as a function of at least one attribute of the road.

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