(swplot-base)=

# swplot.base

## Syntax
  
`swplot.base(BV)`
 
`swplot.base(obj)`
  
`BV = swplot.base`
 
## Description
  
`swplot.base(BV)` sets the basis vector for an swplot figure. The basis
vectors can be used to define a non-orthogonal coordinate system for
graphic objects.
 
`swplot.base(obj)` sets the basis vectors to the lattice units of a given
[spinw](#spinw) object `obj`.
   
`BV = swplot.base` returns the basis vectors stored in the swplot figure.
   
  
## Input Arguments
  
`BV`
: Either a $[3\times 3]$ matrix of the new basis vectors or a [spinw](#spinw)
  object where the new basis vectors will be the lattice
  units and the basis vectors are generated via [spinw.basisvector](#spinw-basisvector).
  
`hFigure`
: Handle of the [swplot] figure. Default is the active
  figure.
  
## See Also
  
[swplot.plot](#swplot-plot)