Creates Kobe II Strategy Matrices

Creates latex tables with shading for inclusion in latex docs.

# S4 method for numeric
shade(object, breaks = c(-0.1, 50, 60, 70, 80, 90, 100),
  shades = c("\\cellcolor{gray100}", "\\cellcolor{gray90}",
  "\\cellcolor{gray80}", "\\cellcolor{gray70}", "\\cellcolor{gray60}",
  "\\cellcolor{gray50}"), pct = "\\%", ...)

Arguments

object	an object of class vector,data.frame,...
breaks	vector of breaks
shades	vector of colours for shading
pct	adds percent sign
...	other arguments