[R] Installing RODBC

I tried installing RODBC but got the following message: Checks were yes until the following checking sql.h usability... no checking sql.h presence... no checking for sql.h... no checking sqlext.h usability... no checking sqlext.h presence... no checking for sqlext.h... no configure: error: ODBC

[R] lattice different colors in different areas

In making grid graphs, one can make the background semi-transparent with a line like grid.rect(gp=gpar(lty=0, fill=rgb(.5, .5, 0,. 25))) and then make the area where points and lines are plotted white with lines like pushViewport(plotViewport(c(5,4,3,1))) pushViewport(dataViewport(year, m,

[R] simple graphing question

I have what should be a simple question but I've been unable to solve it in a reasonable length of time. For example with data like ge product response scenario 1wine5 base 2 steel 10 base 3 sugar4 base 4wine -10 policy 5 steel1