[R] barchart() {Lattice} help.

[David Winsemius]

Cannot reproduce. Seems to work as documented. Maybe your code  
(whatever it might be)  is not correct?

-- 
David.
On Nov 26, 2009, at 6:53 PM, Peng Cai wrote:

> Thanks David, I tried panel.abline(h=somevalue) -- both inside and  
> outside of barchart() function but its not working. Any suggestions?
>
> Peng
>
> On Thu, Nov 26, 2009 at 6:42 PM, David Winsemius <dwinsemius at comcast.net 
> > wrote:
>
> On Nov 26, 2009, at 6:12 PM, Peng Cai wrote:
>
> Thanks a lot Peter! One more help, is there a similar function  
> abline() for
> barchart().
>
> ?panel.abline
>
>
>
> I'm trying to add a (light gray colored) horizontal lines, one for  
> each
> y-value.
>
> Peng
>
> On Thu, Nov 26, 2009 at 5:59 PM, Peter Ehlers <ehlers at ucalgary.ca>  
> wrote:
>
> Peng Cai wrote:
>
> Hi Peter,
>
> I'm not sure but it seems "scales" command works only with integer  
> values.
>
> If the y-axis values are very small (such as -0.03, -0.02, -0.01, 0,
> 0.01,..., 0.08). My current plot has values 0, 0.05, and 0.10 only.  
> But I
> need it to extend it to negative numbers and reduce the scale width  
> (like
> -0.04, -0.02, 0, 0.02,...).
>
> Can I change these too? Thanks!
>
>
> Use, e.g.
>
> myYscale <- seq(-0.04, 0.08, 0.02)
> barchart(...,
>  ...,
>  scales = list(y = list(at = myYscale)),
>  ...
> )
>
> -Peter Ehlers
>
>
>
> Peng
>
> On Thu, Nov 26, 2009 at 3:18 PM, Peter Ehlers <ehlers at ucalgary.ca>  
> wrote:
>
>
> Peng Cai wrote:
>
> Hi R Users,
>
> I'm trying to plot a stacked barplot. Here is data:
>
> Sample Col1 Col2 Col3
> Row1 -2 4 -1
> Row2 3 -2 4
> Row3 3 5 -2
> Row4 4 1 -1
>
> I'm using following R code:
>
> library(lattice)
> dta<-read.table("data.txt", header=TRUE, row.names="Sample")
> barchart(data.matrix(dta),
>     horizontal=FALSE,
>     stack=TRUE,
> col=2:4,
>     auto.key=list(space="right",
> title=names(dimnames(dta))[2])
> )
>
> Above code is working fine, but I need help with:
>
> 1) Legend boxes have default colors, whereas I'm looking them to match
> with
> barplot colors (col=2:4).
>
> replace the line
>
> col = 2:4,
>
> with
>
> par.settings = simpleTheme(col = 2:4),
>
>
> 2) Can I increase scale for y axis, like currently it plotting
>
> -2,0,2,4,...
> I would like it as -2,-1,0,1,...
>
> add the line
>
> scales = list(y = list(at = -2:8)),
>
> or whatever tick locations you prefer.
>
> -Peter Ehlers
>
>
> Any help would be greatly appreciated,
>
> Thanks,
> Peng
>
>     [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>
>
>
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
> David Winsemius, MD
> Heritage Laboratories
> West Hartford, CT
>
>

David Winsemius, MD
Heritage Laboratories
West Hartford, CT