Conversion between plotting scales: usr, cm, symbol
Give scale conversion factors of three coordinate systems in use for traditional R graphics: use, cm, symbol.
p.scales(unit = relsysize * 2.54 * min(pin), relsysize = 0.05)
unit |
length of unit (or x and y units) of symbol coordinates in cm. |
relsysize |
same, as a proportion of the plotting area. |
A numeric 2x2 matrix, with rows named x
and y
, and
columns, named "sy2usr"
and "usr2cm"
which give the
scale conversion factors from ‘symbol’ (as given) to
‘usr’ coordinates and from these to ‘cm’, respectively.
Werner Stahel, 1990; simplification: M.Maechler, 1993, 2004
par("usr")
, of also ("pin")
on which this
is based.
p.scales()
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.