aspace: A collection of functions for estimating centrographic statistics and computational geometries for spatial point patterns

A collection of functions for computing centrographic statistics (e.g., standard distance, standard deviation ellipse, standard deviation box) for observations taken at point locations. Separate plotting functions have been developed for each measure. Users interested in writing results to ESRI shapefiles can do so by using results from aspace functions as inputs to the and write.shapefile functions in the shapefiles library. The aspace library was originally conceived to aid in the analysis of spatial patterns of travel behaviour (see Buliung and Remmel, 2008). Major changes in the current version include (1) removal of dependencies on several external libraries (e.g., gpclib, maptools, sp), (2) the separation of plotting and estimation capabilities, (3) reduction in the number of functions, and (4) expansion of analytical capabilities with additional functions for descriptive analysis and visualization (e.g., standard deviation box, centre of minimum distance, central feature).

Install the latest version of this package by entering the following in R:
AuthorRandy Bui, Ron N. Buliung, Tarmo K. Remmel
Date of publication2012-08-14 12:37:42
MaintainerRon N. Buliung <>
LicenseGPL (>= 2)

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acos_d Man page
activities Man page
activities2 Man page
asin_d Man page
aspace Man page
aspace-package Man page
as_radians Man page
atan_d Man page
calc_box Man page
calc_sdd Man page
calc_sde Man page
centre Man page
CF Man page
CF2PTS Man page
CMD Man page
cos_d Man page
distances Man page
mean_centre Man page
median_centre Man page
plot_box Man page
plot_centres Man page
plot_sdd Man page
plot_sde Man page
r.BOX Man page
r.SDD Man page
r.SDE Man page
sin_d Man page
tan_d Man page
wts Man page

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