pub fn average_echoes(data: &[f64], grid: &Grid) -> Vec<f64>Expand description
Average a multi-echo volume over its echoes
Input is n_echoes × n_total values stacked along the slowest axis;
output is a single n_total volume. A single-echo input is returned
unchanged.
§Panics
If data is not a non-zero multiple of grid.n_total().