The GetComponents method returns a list of components of a VectorField or OneForm object.

The components can also be returned as a table, by specifying output = "table". See example below.

This method is associated with the VectorField and OneForm objects. For more detail, see Overview of the VectorField object, Overview of the OneForm object.

$\mathrm{with}\left(\mathrm{LieAlgebrasOfVectorFields}\right)\:$

$X≔\mathrm{VectorField}\left(\mathrm{components}=\left[\mathrm{\xi }\,\mathrm{\eta }\right]\,\mathrm{space}=\left[x\,y\right]\right)$

$X≔\mathrm{\xi }\left(\frac{\ⅆ}{\ⅆx}\right)+\mathrm{\eta }\left(\frac{\ⅆ}{\ⅆy}\right)$

$\mathrm{GetComponents}\left(X\right)$

$\left[\mathrm{\xi }\,\mathrm{\eta }\right]$

$\mathrm{\omega }≔\mathrm{OneForm}\left(\mathrm{components}=\left[1\,x^2\,y^2\right]\,\mathrm{space}=\left[x\,y\,z\right]\right)$

$\mathrm{\omega }≔x^2\mathrm{dy}+y^2\mathrm{dz}+\mathrm{dx}$

$T≔\mathrm{GetComponents}\left(\mathrm{\omega }\,\mathrm{output}=''table''\right)$

$T≔table\left(\left[y=x^2\,x=1\,z=y^2\right]\right)$

$T\left[x\right],T\left[y\right],T\left[z\right]$

$1,x^2,y^2$

The GetComponents command was introduced in Maple 2020.

For more information on Maple 2020 changes, see Updates in Maple 2020.