Hi,
May be this helps:
barchart(npp,origin=0,box.width=1,
panel=function(x,y,...){
panel.barchart(x,y,...)
panel.abline(v=2,col.line="red",lty=3)})
A.K.
----- Original Message -----
From: Jonathan Greenberg <j...@illinois.edu>
To: r-help <r-help@r-project.org>
Cc:
Sent: Tuesday, January 22, 2013 5:41 PM
Subject: [R] Adding a line to barchart
R-helpers:
I need a quick help with the following graph (I'm a lattice newbie):
require("lattice")
npp=1:5
names(npp)=c("A","B","C","D","E")
barchart(npp,origin=0,box.width=1)
# What I want to do, is add a single vertical line positioned at x = 2 that
lays over the bars (say, using a dotted line). How do I go about doing
this?
--j
--
Jonathan A. Greenberg, PhD
Assistant Professor
Global Environmental Analysis and Remote Sensing (GEARS) Laboratory
Department of Geography and Geographic Information Science
University of Illinois at Urbana-Champaign
607 South Mathews Avenue, MC 150
Urbana, IL 61801
Phone: 217-300-1924
http://www.geog.illinois.edu/~jgrn/
AIM: jgrn307, MSN: jgrn...@hotmail.com, Gchat: jgrn307, Skype: jgrn3007
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and provide commented, minimal, self-contained, reproducible code.
