---
name: "Xray::Scattering::None"
section: "3pm"
platform: "linux"
package: "libxray-scattering-perl"
version: "3.0.1-3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Xray::Scattering::None"
---

# Xray::Scattering::None(3pm)

Fallback methods for Xray::Scattering

## NAME

Xray::Scattering::None - Fallback methods for Xray::Scattering

## SYNOPSIS

```
  use Xray::Scattering;
  Xray::Scattering->load('None');
  $fnot = Xray::Scattering->get_f($symb, $d);
```

## DESCRIPTION

This module provides a fallback subclass for the Xray::Scattering methods.  It provides all the methods of the real subclasses, but returns fallback values.

## METHODS

- "get\_f"

  Retruns 0.

- "get\_coefficients"

  returns an array of 11 zeros.

- "has"

  Always returns the symbol itself.

## AUTHOR

```
  Bruce Ravel, bravel AT bnl DOT gov
  http://cars9.uchicago.edu/~ravel/software/exafs/
```