kzpdr, kzp2, kz.ft, and kzrc2A group of internal functions used by kzpdr, kzp2, kz.ft,
and kzrc2.
a2d transfers 2D array to data frame. If input is data
frame, it will return the original data frame.
agrid aggregates data based on given grid scale.
best.cor returns the largest correlation and related
lags on x- or y-direction for two image matrices.
df2mt transfers data frame to matrix.
efg gives projected wave frequency on given direction.
getwave is designed to extract data series along a given
direction in a 2D field.
getwavf extracts data series along a given direction in
a 2D field with phase arranged according to the wave frequency.
markspikes and spikes.2d are functions to mark the
spikes of the 1D periodogram and 2D periodogram, respectively.
a2d(a)agrid(df, scale, math = "mean")
best.cor(rc, sig, ...)
df2mt(df, scale)
efg(f, d, ag)
getwave(df, angle, cp = 0)
getwavf(df, angle, f1, rlvl = 1)
spikes.2d(x.fq, y.spm, nm = 10)
markspikes(x.fq, y.spm, plot = TRUE, ...)
2D array for position and signal values.
Data frame of signal values and positions.
Vector for scale of each dimension. For example, for a x * y grid, the scale is c(1/x, 1/y).
Function to aggregate the data. Defaults to "mean".
Array. Reconstructed signal.
Array. Original signal (without noise).
Other arguments, i.e. the "cut" threshold, etc.
cut :
Set the minimum value for a marked frequency spike. Recommend to
use argument lvl instead of setting this value directly.
lvl :
"min" or "max". Threshold strategy for marking frequency spikes.
Essentially it will set the "cut" threshold value as different
level. "min" is used for cases of weak singles dominating by
some strong singles. Defaults to "max".
Wave frequency.
Wave direction.
Sampling direction.
Direction or vector of directions in radians.
Sampling scheme. Values 0, 2, and others : normal; 1: interpolation; 3: errors
Wave frequency
Coefficient to control the averaging level.
Vector of frequency values for x axis.
Vector of spectrum values for y axis.
If need to add marks on the periodogram. Defaults to TRUE.
Wave direction