# Calculate position of label with respect to vertex location within a circle

`radian.rescale.Rd`

Useful for graphs drawn using `igraph`

to reposition labels relative to vertices when vertices
are laid out in a circle (as is common in network plots). `igraph`

interprets position within
`vertex.label.degree`

as radians, so it is necessary to convert locations into radian values. This
is the main role of this function.