Usage
bar.plot.wtd(x, y=NULL, z=NULL, w=NULL, data=NULL,
vnames.x=NULL, vnames.y=NULL, vnames.z=NULL,
btext=NULL, cutz=F, zperc=NULL,
b=NULL, b2=0.5, v=NULL, h=NULL, gradient=FALSE,
xlab="", ylab="", main="", ylim=NULL,
yticks=NULL, col=NULL, tcol=NULL, bgcol=NULL, lcol=NULL,
alpha=NULL, beside=TRUE, legendon="topright", wall=0,
lhoriz=NULL, prozent=FALSE, form="r", border=TRUE, density=NULL,
angle=NULL, density2=NULL, angle2=NULL, fill=NULL, lwd=1, lty=1,
blwd=1, blty=1)