13.9 Exercises

  • We have used raster::rasterFromXYZ() to convert a input_tidy into a raster brick.Try to achieve the same with the help of the sp::gridded() function.

  • Download the csv file containing inhabitant information for a 100-m cell resolution (https://www.zensus2011.de/SharedDocs/Downloads/DE/Pressemitteilung/DemografischeGrunddaten/csv_Bevoelkerung_100m_Gitter.zip?__blob=publicationFile&v=3).Please note that the unzipped file has a size of 1.23 GB.To read it into R, you can use readr::read_csv.This takes 30 seconds on my machine (16 GB RAM)data.table::fread() might be even faster, and returns an object of class data.table().Use as.tibble() to convert it into a tibble.Build an inhabitant raster, aggregate it to a cell resolution of 1 km, and compare the difference with the inhabitant raster (inh) we have created using class mean values.

  • Suppose our bike shop predominantly sold electric bikes to older people.Change the age raster accordingly, repeat the remaining analyses and compare the changes with our original result.

References

Tomintz, Melanie N M.N., Graham P Clarke, and Janette E J.E. Rigby. 2008. “The Geography of Smoking in Leeds: Estimating Individual Smoking Rates and the Implications for the Location of Stop Smoking Services.” Area 40 (3): 341–53.

Muenchow, Jannes, Petra Dieker, Jürgen Kluge, Michael Kessler, and Henrik von Wehrden. 2018. “A Review of Ecological Gradient Research in the Tropics: Identifying Research Gaps, Future Directions, and Conservation Priorities.” Biodiversity and Conservation 27 (2): 273–85. https://doi.org/10.1007/s10531-017-1465-y.

Longley, Paul. 2015. Geographic Information Science & Systems. Fourth edition. Hoboken, NJ: Wiley.

Huff, David L. 1963. “A Probabilistic Analysis of Shopping Center Trade Areas.” Land Economics 39 (1): 81–90. https://doi.org/10.2307/3144521.

Wieland, Thomas. 2017. “Market Area Analysis for Retail and Service Locations with MCI.” The R Journal 9 (1): 298–323.

  • The potential error introduced during this reclassification stage will be explored in the exercises.↩

  • The OSM-download will sometimes fail at the first attempt.↩