[R] axis placement with stacked barplots and the asp=1 parameter

[Kavithan Siva]

Hi

Here's some example code which illustrates the issue:

dataSeries<-array(0, c(5, 2))

dataSeries[1, 1] <- 5
dataSeries[2, 1] <- 5
dataSeries[3, 1] <- 0
dataSeries[4, 1] <- 2
dataSeries[5, 1] <- 0

dataSeries[1, 2] <- 7
dataSeries[2, 2] <- 0
dataSeries[3, 2] <- 0
dataSeries[4, 2] <- 0
dataSeries[5, 2] <- 1

barplot(dataSeries, asp=1)

Removing the asp=1 parameter produces a correct looking plot. I need to
use the asp=1 parameter because I was re-writing the barplot function to
create stacked charts with rounded corners (instead of rectangles). For
the arc at the corners of the bars to look correct I need asp=1. I've
attached a .ps file to show you what I was trying to achieve.

Thanks
Kav


Kavithan Siva
Prytania Investment Advisors LLP
105 Ladbroke Grove, London, W11 1PG
Tel: +44 20 7616 8475   Fax: +44 20 7616 8472
Prytania Investment Advisors LLP is regulated by the FSA

-----Original Message-----
From: Uwe Ligges [mailto:ligges at statistik.uni-dortmund.de] 
Sent: Friday, January 21, 2005 11:52 AM
To: Kavithan Siva
Cc: r-help at stat.math.ethz.ch
Subject: Re: [R] axis placement with stacked barplots and the asp=1
parameter

Kavithan Siva wrote:

> Hi,
> 
> I'm currently using barplot to generate vertically stacked bar charts.
> I'd like to be able to use the "asp=1" parameter with barplot(), but
> doing this causes the y axis to be placed on the far left as shown in
> the attachment demo.pdf.

See the posting guide, some file types (including pdf) will be omitted 
from your messages to R-help. You might want to specify a short but 
easily reproducible examples in 2-5 lines of code.

Why do you want to use "asp" with a barplot???

Uwe Ligges


> I could get around this by using the negative values for the line
> parameter of the axis() function. I'd rather not do this and imagine
I'm
> doing something wrong. Any help would be much appreciated.
> 
> Thanks
> Kav
>  
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