stplanr: geo_select_aeq – R documentation

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geo_select_aeq

Select a custom projected CRS for the area of interest

Description

This function takes a spatial object with a geographic (WGS84) CRS and returns a custom projected CRS focussed on the centroid of the object. This function is especially useful for using units of metres in all directions for data collected anywhere in the world.

Usage

geo_select_aeq(shp)

Arguments

shp

A spatial object with a geographic (WGS84) coordinate system

Details

The function is based on this stackexchange answer: https://gis.stackexchange.com/questions/121489

Examples

sp::bbox(routes_fast)
new_crs <- geo_select_aeq(routes_fast)
rf_projected <- sp::spTransform(routes_fast, new_crs)
sp::bbox(rf_projected)
line_length <- rgeos::gLength(rf_projected, byid = TRUE)
plot(line_length, rf_projected$length)
shp <- zones_sf
geo_select_aeq(shp)

stplanr

Sustainable Transport Planning

v0.8.2

MIT + file LICENSE

Authors

Robin Lovelace [aut, cre] (<https://orcid.org/0000-0001-5679-6536>), Richard Ellison [aut], Malcolm Morgan [aut] (<https://orcid.org/0000-0002-9488-9183>), Barry Rowlingson [ctb], Nick Bearman [ctb], Nikolai Berkoff [ctb], Scott Chamberlain [rev] (Scott reviewed the package for rOpenSci, see https://github.com/ropensci/onboarding/issues/10), Mark Padgham [ctb], Andrea Gilardi [ctb] (<https://orcid.org/0000-0002-9424-7439>)

Initial release