Functions to perform simple graphics or enhance existing plots.
Usage
hulls(x, y, gr, col.gr=NULL)
figCnvt(fig1, fig2)
Arguments
x, y
vectors of x, y coordinates.
gr
factor to grop observations.
col.gr
a single colour or a vector of colours of length nG, where nG is the number of groups.
fig1, fig2
original fig dimensions (fig1) and new fig2 dimensions (fig2). See details.
Value
Function figCnvt returns a vector of 4 values specifying the new new figure dimensions.
Details
Function hulls is a wrapper for chull to add convex hulls to a scatterplot, optionally specifying a different colour for each hull.
Function figCnvt projects a set of fig dimensions fig2 with respect to an original set fig1. Useful for laying out plots where the ploting region has already been partitioned using fig.