20 m-height lines Wuppertal 2015

The data set “20 m-Heightlines Wuppertal 2015” contains contour lines with an equi distance of 20 m for the entire urban area of Wuppertal. There are 5 different types of data format and coordinate system. The dataset is based on the digital terrain model DGM1 provided by Geobasis NRW with the predominant data status in 2015 (stands 2012 and 2017 in some northern and eastern edges of the Wuppertal urban area). The DGM1 is a regular dot grid generated by aircraft-based laser scanning (Lidar) with a mesh size of 1 m and a height accuracy of a single point of ± 2 dm. The contour lines were created with ArcGIS 10.6 and the ArcGIS Spatial Analyst extension by interpolation in the DGM1 without taking into account additional ground break edges. In addition to the standard behavior of the tool “surface – contour line” available in the Spatial Analyst, there was no explicit smoothing of the curvature of the contour lines. The data record will not be continued. After an update of the DGM1, the contour lines Wuppertal are re-derived under other product designations. The record is available under an open data license (CC BY 4.0).