NAME

Ifeffit::Demeter::Data::E0 - methods for calibrating and aligning XAS mu(E) data

VERSION

This documentation refers to Ifeffit::Demeter version 0.0.1

SYNOPSIS

DESCRIPTION

This subclass of Ifeffit::Demeter::Data contains methods for calibrating mu(E) data and adjusting e0.

METHODS

calibrate

This calibrates data by setting a chosen energy value to a new value. This method simultaneously sets the bkg_e0 and bkg_eshift Data attributes.

  $e0 = $data -> calibrate($edge_point, $edge_energy);

Both arguments are optional. If the $edge_point is 0 or not given, then the current value of bkg_e0 will be used. If the $edge_energy is not given, then the tabulated energy for the absorber species and edge will be used. If $edge_energy is 0 or not given and the Data object does not have valid values for the bkg_z and fft_edge attributes, an exception will be thrown. The return value is the new value of the edge energy.

align

This method align each item in a list of data objects to the Data object on which the method is called. That is, align each Data object in the argument list to the calling object.

  $standard_data -> align(@list_of_data_to_align);

Each argument must be a Data object. The return value is the energy shift of the last Data object in the list.

e0

  $e0 = $data -> e0($mode);

ifeffit
zero
fraction
atomic
Data object
number

BUGS AND LIMITATIONS

Please report problems to Bruce Ravel (bravel AT anl DOT gov)

Patches are welcome.

AUTHOR

Bruce Ravel (bravel AT anl DOT gov)

http://cars9.uchicago.edu/~ravel/software/

LICENCE AND COPYRIGHT

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.