Evaluate expression on metric files — metric_math • wbcmd

Wraps wb_command -metric-math to perform element-wise mathematical operations on metric files at each surface vertex.

Usage

metric_math(
  expression,
  metric_out,
  var,
  fixnan = FALSE,
  verbose = get_wb_verbosity()
)

Arguments

expression: Math expression string (e.g. "(x - mean) / stdev").
metric_out: Path for the output metric file.
var: Named list of input metric file paths. Names correspond to variable names used in expression.
fixnan: Logical; replace NaN results with 0?
verbose: Logical; print command output?

Value

The result of the underlying wb_cmd() call.

Examples

if (FALSE) { # \dontrun{
metric_math(
  "abs(x - y)",
  metric_out = "diff.func.gii",
  var = list(x = "post.func.gii", y = "pre.func.gii")
)
} # }