Calculates RQA measures without building the recurrence matrix. Requires package parallel.
rqa_measures(
y1,
y2 = NA,
emRad = NA,
DLmin = 2,
VLmin = 2,
HLmin = 2,
DLmax = NA,
VLmax = NA,
HLmax = NA,
AUTO = NULL,
theiler = NA,
method = "Euclidean",
chromatic = FALSE,
anisotropyHV = FALSE,
asymmetryUL = FALSE,
returnUL = FALSE,
recurrenceTimes = FALSE,
distributions = FALSE,
silent = TRUE
)A numeric vector or time series
A numeric vector or time series for cross recurrence
The threshold (emRad) to apply to the distance matrix to create a binary or weighted matrix. If NULL, an unthresholded matrix will be created (default = NULL)
Minimal diagonal line length (default = 2)
Minimal vertical line length (default = 2)
Minimal horizontal line length (default = 2)
Maximal diagonal line length (default = length of diagonal -1)
Maximal vertical line length (default = length of diagonal -1)
Maximal horizontal line length (default = length of diagonal -1)
Auto-recurrence? (default = FALSE)
Use a theiler window around the main diagonal (Line of Identity/Synchronisation) to remove auto-correlations at short time-lags:
0 will include the main diagonal in all RQA measure calculations.
1 will remove the main diagonal from all RQA measure calculations.
NA (default), will check if the matrix is symmetrical , if so, it will remove the diagonal by setting theiler = 1 (Line of Identity, Auto-RQA), if it is not symmetrical (Line of Synchronisation, Cross-RQA) it will set theiler = 0.
A value greater than 1 will remove that many diagonals around and including the diagonal from all RQA measure calculations. So theiler = 2 means exclude 2 diagonals around the main diagonal, including the main diagonal itself: [-1,0,1].
If theiler is a numeric vector of length(theiler) == 2 it is possible to exclude an asymmetrical window. The values are interpreted as end points in a sequence of diagonal ID's, e.g. theiler = c(-1,5) will exclude [-1,0,1,2,3,4,5]. If length(theiler) > 2, the values will be considered individual diagonal ID's, e.g. theiler = c(-3,-1,0,2,5), will exclude only those specific ID's. Also see the note.
Distance measure to use. Any option that is valid for argument method of proxy::dist(). Type proxy::pr_DB$get_entries() to see a list of all the options. Common methods are: "Euclidean", "Manhattan", "Minkowski", "Chebysev" (or the same but shorter: "L2","L1","Lp", "max" distance). To use the shape based distance for phase-based recurrence use "SBD" (default = "Euclidean")
Perform a chromatic RQA. This assumes the recurring values represent the labels of an unordered categorical variable (default = FALSE)
Return anisotropy ratio measures based on Horizontal and Vertical lines. The ratios are calculated as (horizontal - vertical) / (horizontal + vertical). So a value of 0 means no anisotropy, negative ratios indicate the measures based on vertical lines had higher values, positive ratios indicate the measures based on horizontal lines had higher values (default = FALSE)
Return asymmetry ratio measures based on Upper and Lower triangles. The ratios are calculated as (upper - lower) / (upper + lower). So a value of 0 means no asymmetry, negative ratios indicate the measures based on the lower triangle had the higher values, positive ratios indicate measures based on the upper triangle had higher values (default = FALSE)
Return the (C)RQA values for the upper and lower triangle on which asymmetry ratio calculations are based? (default = FALSE)
Return measures based on 'white lines', the recurrence times (default = FALSE)
Silent-ish mode
RQA measures