Space-time interaction, Mantel, geographic profiling and related tools
Source:R/SpaceTimeTools.R
KnoxTest.RdKnoxTest: Knox (1964) count with Poisson and Philox-permutation
p-values. NearRepeatTable: banded observed/expected pair counts
(Townsley et al. 2003). MantelTest: vegan::mantel statistic
with Philox permutations. GeographicProfile: Rossmo (1995) CGT.
AoristicWeights: Ratcliffe (2002). Kde2d: as
MASS::kde2d. CrossCorrelation: as stats::ccf.
EofAnalysis: EOFs of a times x locations field. Identical to the
Python arm morie.fn.sttools.
Usage
KnoxTest(coords, times, s0, t0, nsim = 999L, seed = 1L)
NearRepeatTable(
coords,
times,
space_breaks,
time_breaks,
nsim = 99L,
seed = 1L
)
MantelTest(D1, D2, method = "pearson", nsim = 999L, seed = 1L)
GeographicProfile(crimes, grid, B, f = 1.2, g = 1.2)
AoristicWeights(starts, ends, breaks)
Kde2d(x, y, h = NULL, n = 25L, lims = c(range(x), range(y)))
CrossCorrelation(x, y, lag_max = NULL)
EofAnalysis(Z, k = NULL)Arguments
- coords
Coordinates.
- times
Event times.
- s0, t0
Space and time closeness thresholds.
- nsim
Permutations.
- seed
Philox seed.
- space_breaks, time_breaks
Band upper limits.
- D1, D2
Distance matrices.
- method
"pearson"or"spearman".- crimes
Crime sites.
- grid
Grid points.
- B, f, g
Rossmo buffer and exponents.
- starts, ends
Event windows.
- breaks
Time bins.
- x, y
Data.
- h
Bandwidths.
- n
Grid size.
- lims
Grid limits.
- lag_max
Maximum lag.
- Z
Times x locations field.
- k
Number of EOFs.
References
Knox, E. G. (1964). The detection of space-time interactions. Journal of the Royal Statistical Society C 13, 25-30.
Mantel, N. (1967). The detection of disease clustering and a generalized regression approach. Cancer Research 27, 209-220.
Ratcliffe, J. H. (2002). Aoristic signatures and the spatio-temporal analysis of high volume crime patterns. Journal of Quantitative Criminology 18, 23-43.