diff --git a/01-introduction.md b/01-introduction.md index 59f2e55c3..f07159af5 100644 --- a/01-introduction.md +++ b/01-introduction.md @@ -49,7 +49,7 @@ This may sound simple and easy to achieve (which it is if you carefully maintain We define geocomputation as -> A field of research, software development and practical application that uses geographic data to solve problems, with a focus on reproducibility, flexibility and tool development. +> Academic research, software development and practical applications that use geographic data to solve problems, with a focus on reproducibility, flexibility and tool development. Geocomputation\index{geocomputation!definition} is a young term, dating back to the first conference on the subject in 1996.^[ The first 'GeoComputation' conference took place at the University of Leeds, where one of the authors (Robin) is currently based. diff --git a/13-transport.md b/13-transport.md index e4267d032..bf89c2826 100644 --- a/13-transport.md +++ b/13-transport.md @@ -511,7 +511,7 @@ This is done using the publicly available OSRM service with the **stplanr** func ``` r routes_short = route(l = desire_lines_short, route_fun = route_osrm, - osrm.profile = "bike") + osrm.profile = "car") ``` The output is `routes_short`, an `sf` object representing routes on the transport network\index{network} that are suitable for cycling (according to the OSRM routing engine at least), one for each desire line. @@ -570,7 +570,7 @@ routes_short_scenario = routes_short |> mutate(bicycle = bicycle + car_driver * uptake, car_driver = car_driver * (1 - uptake)) sum(routes_short_scenario$bicycle) - sum(routes_short$bicycle) -#> [1] 3862 +#> [1] 3264 ``` Having created a scenario in which approximately 4000 trips have switched from driving to cycling, we can now model where this updated modeled cycling activity will take place. diff --git a/404.html b/404.html index 679e37dc2..859322f1f 100644 --- a/404.html +++ b/404.html @@ -129,7 +129,7 @@

Second Edition