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aspace (version 4.0.1)

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

4.0.1

License

GPL-3

Maintainer

Tarmo K Remmel

Last Published

August 29th, 2023

Functions in aspace (4.0.1)

as_radians

Converts degrees to radians
calc_sdd

Calculate the Standard Distance Deviation (Standard Distance)
plot_box

Plot the Standard Distance Box
distances

Multiple Euclidean distance calculator
sin_d

Compute sine with angle given in degrees
median_centre

Median Centre Calculator
plot_sde

Plot the Standard Deviation Ellipse
plot_sdd

Plot the Standard Distance Deviation (Standard Distance)
mean_centre

Mean Centre Calculator
centre

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

Compute cosine with angle given in degrees
wts

Weights vector
calc_sde

Calculate the Standard Deviation Ellipse
tan_d

Compute tangent with angle given in degrees
acos_d

Compute inverse cosine with angle given in degrees
activities2

Demo Data: x and y coordinates of 10 specified point locations
CF2PTS

Central feature between 2 point patterns (CF2PTS) Calculator
asin_d

Compute inverse sine with angle given in degrees
CF

Central Feature (CF) Calculator
activities

Demo Data: x and y coordinates of 10 specified point locations
aspace-package

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

Calculate the Standard Deviation Box
atan_d

Compute inverse tangent with angle given in degrees