**Table of contents**- pkgs/TrackFit (NOvA offline)

# pkgs/TrackFit (NOvA offline)¶

A concise, but complete, statement of what this thing does.

**Input**: objects... (and their typical location...)**Output**: objects... (and their typical location...)

### Usage¶

This is how you use it, including (if possible) a complete outlining of pre-defined XML configurations.

## Circe¶

Performs a chi^2 fit to a single vertex location and a collection of N-prong directions.

## CirceFit¶

## CirceFitAna¶

**Input**:`simb::MCTruth`

,`rb::Prong`

**Output**: Analysis histograms

### Usage¶

### Technical Description¶

Analyses the fit in `CirceFit`

. Plots the resolution of the X, Y and Z components (Plot where the true vertex is compared to where we are seeding)

## CosmicTrack¶

## CosmicTrackAna¶

## KalmanTrack¶

## KalmanTrackAna¶

## RLFit¶

Raw data Line Fitter - Essentially performs a straight line fit to a collection of `rawdata::RawDigits`

.

Uses an analytic solution to the problem of fitting a straight line to a series of points by minimizing the sum of the squares of the perpendicular distances from line to points.

To improve robustness against noise, `RLFit`

uses a deterministic annealing procedure to update the weights assigned to individual hits in a iterative process.

More details can be found in doc-db 5809