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aspace (version 4.1.1)

Functions for Estimating Centrographic Statistics

Description

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 convert.to.shapefile() and write.shapefile() functions in the 'shapefiles' library. We intend to provide 'terra' integration for geographic data in a future release. The 'aspace' package was originally conceived to aid in the analysis of spatial patterns of travel behaviour (see Buliung and Remmel 2008 ).

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Version

Install

install.packages('aspace')

Monthly Downloads

918

Version

4.1.1

License

GPL-3

Maintainer

Tarmo K Remmel

Last Published

April 17th, 2024

Functions in aspace (4.1.1)

acos_d

Compute inverse cosine with angle given in degrees
activities

Demo Data: x and y coordinates of 10 specified point locations
calc_box

Calculate the Standard Deviation Box
asin_d

Compute inverse sine with angle given in degrees
aspace-package

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

Plot the Standard Distance Box
cos_d

Compute cosine with angle given in degrees
distances

Multiple Euclidean distance calculator
sin_d

Compute sine with angle given in degrees
activities2

Demo Data: x and y coordinates of 10 specified point locations
tan_d

Compute tangent with angle given in degrees
calc_cf

Central Feature (CF) Calculator
as_radians

Converts degrees to radians
plot_centres

Plot centres
calc_mnc

Mean Centre Calculator
calc_cf2pts

Central feature between 2 point patterns (CF2PTS) Calculator
calc_cmd

Centre of Minimum Distance (CMD) Calculator
calc_sdd

Calculate the Standard Distance Deviation (Standard Distance)
wts

Weights vector
calc_mdc

Median Centre Calculator
calc_sde

Calculate the Standard Deviation Ellipse
centre

Demo Data: Coordinates of a single source, centre, location
plot_sdd

Plot the Standard Distance Deviation (Standard Distance)
plot_sde

Plot the Standard Deviation Ellipse
atan_d

Compute inverse tangent with angle given in degrees