Struct rgsl::types::n_tuples::ReadNTuples

pub struct ReadNTuples { /* fields omitted */ }

Implementations

impl ReadNTuples

pub fn open<P: AsRef<Path>>(filename: P) -> Option<ReadNTuples>

This function opens an existing ntuple file filename for reading and returns a pointer to a corresponding ntuple struct. The ntuples in the file must have size size. A pointer to memory for the current ntuple row ntuple_data must be supplied—this is used to copy ntuples in and out of the file.

pub fn read<T: Sized>(&mut self) -> (Value, T)

This function reads the current row of the ntuple file for ntuple and stores the values in ntuple->data.

impl ReadNTuples

pub fn project<T: Sized, V: Fn(&T) -> f64, S: Fn(&T) -> bool>(
    &self,
    h: &mut Histogram,
    value_func: V,
    select_func: S
) -> Value

This function updates the histogram h from the ntuple ntuple using the functions value_func and select_func. For each ntuple row where the selection function select_func is non-zero the corresponding value of that row is computed using the function value_func and added to the histogram. Those ntuple rows where select_func returns false are ignored. New entries are added to the histogram, so subsequent calls can be used to accumulate further data in the same histogram.

Trait Implementations

impl Drop for ReadNTuples

fn drop(&mut self)

Executes the destructor for this type.