.. Artemis document is copyright 2016 Bruce Ravel and released under The Creative Commons Attribution-ShareAlike License http://creativecommons.org/licenses/by-sa/3.0/ Using path-like objects ======================= An important feature of :demeter:`artemis` is the ability to make interesting things that are constructed from tools that :demeter:`feff` provides, but which are not paths in the traditional sense of being strictly associated with one of the :file:`feffNNNN.dat` files that comes from a normal execution of :demeter:`feff`. Some of these path-like objects are directly associated with a particular :demeter:`feff` calculation. For example, an SSPath created on the Path-like tab on the :demeter:`feff` window is created directly from the scattering potentials from that :demeter:`feff` calculation. Similarly, a histogram-based path-like object also uses a particular :demeter:`feff` calculation. Other path-like objects either have a hidden relationship with a :demeter:`feff` calculation or none at all. The path from a quick first shell theory calculation does have a :demeter:`feff` calculation associated with it, but it is done in a way that the user never interacts with that calculation. The quick first shell path does not have an entry in the :demeter:`feff` list on the Main window. An empirical standard, as the name implies, is derived from data and therefor is not associated with any :demeter:`feff` calculation. Although each of these path-like objects derives from a different place than a typical path, :demeter:`artemis` presents them to the user identically. Each kind of path-like object is displayed using all the same controls as a normal path and each is parametered and used in a fit in the same way. - `Information about SSPaths <../feff/pathlike.html#single-scattering-paths>`_ - Information about histograms (*not written yet*) - `Information about the quick first shell theory <../extended/qfs.html>`_ - `Information about empirical standards <../extended/empirical.html>`_