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Sample density maps with coordinates derived from fixation groups.

template_sample.Rd

this function extracts the density for any arbitrary time point in a trial. It simply extracts the value of the density map for the fixation at time t. The fixations are taken from the `fixgroup` variable and may be associated, for example, with an independent set of trials.

Usage

template_sample(
  source_tab,
  template,
  fixgroup = "fixgroup",
  time = NULL,
  outcol = "sample_out"
)

Arguments

source_tab

the name of the table containing the density map and fixations

template

the name of the template density variable

fixgroup

the name of the fixation group supplying the spatiotemporal coordinates used to sample the template

time

the time points used to extract coordinates from the `fixation_group`

outcol

the name of the output variable