Create dendrochronologial networks

Function to create dendrochronological networks based on the similarity. The input for this function is a similarity table created with the sim_table() function. The thresholds are set to the defaults (Visser 2021).

Usage

dendro_network(
  sim_table,
  r_threshold = 0.5,
  sgc_threshold = 0.7,
  p_threshold = 1e-04,
  corr_type = "r_hol"
)

Arguments

sim_table

a table of similarities created by the sim_table() function

r_threshold

all correlations equal or above this value are taken into account for the creation of edges. If you want all positive correlations included set this to 0.

sgc_threshold

all sgc-values equal or above this value are taken into account for the creation of edges.

p_threshold

all probabilities of exceedence equal or below this value are taken into account for the creation of edges.

corr_type

choose between the correlation based on wuchswerte (r_hol: Hollstein 1980) or the correlation without extra transformation (r)

Value

A simplified network of tree-ring material with the edges defined by the similarity.

References

Visser, RM. 2021a Dendrochronological Provenance Patterns. Network Analysis of Tree-Ring Material Reveals Spatial and Economic Relations of Roman Timber in the Continental North-Western Provinces. Journal of Computer Applications in Archaeology 4(1): 230–253. DOI: https://doi.org/10.5334/jcaa.79.

Examples

data(hol_rom)
sim_table_hol <- sim_table(hol_rom)
g_hol <- dendro_network(sim_table_hol)
plot(g_hol)

g_hol_r_low <- dendro_network(sim_table_hol, r_threshold = 0.3, sgc_threshold = 0.6, corr_type = "r")
plot(g_hol_r_low)