#' @title slopes: Calculate Slopes of Roads, Rivers and Trajectories
#'
#' @description Calculate the slope (also known as steepness and gradient)
#' of linear features such as roads, rivers and ski routes.
#'
#' Created by Robin Lovelace and Rosa Félix, who developed the package
#' to support their research in active travel, and the prioritisation of
#' investment in cycling, an activity which is sensitive to slopes,
#' in particular.
#'
#' See [github.com/ITSLeeds/slopes](https://github.com/ITSLeeds/slopes/)
#' for the source code and [ropensci.github.io/slopes](https://ropensci.github.io/slopes/)
#' for the website.
#'
#' All package functions can be found in the
#' [Reference page](https://ropensci.github.io/slopes/reference/index.html)
#' on the package website.
#'
#' @keywords internal
"_PACKAGE"
# The following block is used by usethis to automatically manage
# roxygen namespace tags. Modify with care!
## usethis namespace: start
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