Extract lags for aligning all signatures in a set with respect to the signature specified in 'align_to'. Alignments will vary depending on which signature is used for alignment.
Usage
get_sig_lags(
data,
value,
sig_id,
min.overlap = 500,
align_to = levels(sig_id)[1],
resolution = 0.645,
tol = 1e-06
)Arguments
- data
data frame with ids of signatures, x variable and
valuevariable.- value
symbol for the signature values
- sig_id
factor variable with signatures ids
- min.overlap
value passed on to
?get_ccf.- align_to
id of the signature used for alignment. Defaults to the first factor level.
- resolution
numeric value representing the resolution of the signature in microns per pixel.
- tol
tolerance used, i.e. smallest value, such that 1 + tol not equal to 1. Can't be smaller than the machine's numeric resolution
.Machine$double.eps.
Value
data frame with a summary (one row for each level of sig_id) containing
the information on id, lag, and ccf.
Examples
if (FALSE) { # \dontrun{
tmaRks::data("toolmarks", package="tmaRks")
tnest <- toolmarks %>% filter(size=="L") %>% group_by(side, angle) %>% tidyr::nest()
tnest <- tnest %>% mutate(
lags = data %>% purrr::map(.f = get_sig_lags, value=signature,
sig_id=TID, min.overlap=400, resolution = 7.0505e-03)
)
} # }