(spinw-matom)=

# spinw.matom method

## Syntax
  
`mAtomList = matom(obj)`
  
## Description
  
`mAtomList = matom(obj)` is the same as [spinw.atom](#spinw-atom), but only lists the
magnetic atoms, which have non-zero spin. Also this function stores the
generated list in [spinw.cache](#spinw-cache).
  
## Output Arguments
  
`mAtomList`
: structure with the following fields:
  * `r`   Position of the magnetic atoms in a matrix with dimensions of 
    $[3\times n_{magAtom}]$.
  * `idx` Index in the symmetry inequivalent atom list [spinw.unit_cell](#spinw-unit-cell) 
    stored in a row vector with $n_{magAtom}]$ number of elements.
  * `S`   Spin of the magnetic atoms stored in a row vectorwith
    $n_{magAtom}]$ number of elements.
  
## See Also
  
[spinw.atom](#spinw-atom)