Hello,
I'm trying currently using barplot to summarize precipitation data. So far
I've compiled total annual snow and rain accumulation in a table
(attached). I've been successful at plotting it using the following code:
fig=barplot(t(Annual_Precip_table), horiz=TRUE, space=0,
col=c("grey70",
"white"), axes=FALSE)
.
.
The result is a stacked barplot with total annual rain represented by grey
bars and total annual snow represented by white bars. This is great,
however, I'd like to position the bars so that the rain bars are right
justified on the axis and the snow bars are left justified on the axis.
I looked around for ways to do this, and I'm not sure, but is plotrix
capable of doing it using the barb function? Does anyone have experience
with this kind of plot?
Thanks.
--
Kevin Turner
Department of Geography
and Environmental Studies
Wilfrid Laurier University
Waterloo, Ontario
On 04/25/2010 05:04 AM, Kevin Turner wrote:> Hello, > > I'm trying currently using barplot to summarize precipitation data. So far > I've compiled total annual snow and rain accumulation in a table > (attached). I've been successful at plotting it using the following code: > > fig=barplot(t(Annual_Precip_table), horiz=TRUE, space=0, col=c("grey70", > "white"), axes=FALSE) > . > . > The result is a stacked barplot with total annual rain represented by grey > bars and total annual snow represented by white bars. This is great, > however, I'd like to position the bars so that the rain bars are right > justified on the axis and the snow bars are left justified on the axis. > > I looked around for ways to do this, and I'm not sure, but is plotrix > capable of doing it using the barb function? Does anyone have experience > with this kind of plot? >Hi Kevin, No, barp can't do this, but you may have to program a custom plot using similar code. barp creates an empty plot and then draws rectangles on it. It wouldn't be too hard to stack your rectangles from the left or right depending upon a test of whether the stack represented rain or snow. I haven't encountered this type of plot before, but if it is common in some area, it might be worth writing a proper function and making it available to others who could use it. Jim
Does this do what you want?
rainsnow <- rbind( c(0,1,2,3,2,1,0), c(2,2,1,0,0,1,2) )
rainsnow2 <- rbind( rainsnow[1,], -rainsnow[1,], -rainsnow[2,] )
fig=barplot(rainsnow2, horiz=TRUE, space=0, col=c("grey70",NA,
"white"), axes=FALSE)
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Kevin Turner
> Sent: Saturday, April 24, 2010 1:04 PM
> To: r-help at r-project.org
> Subject: [R] barplot - offsetting individual bars
>
> Hello,
>
> I'm trying currently using barplot to summarize precipitation data. So
> far
> I've compiled total annual snow and rain accumulation in a table
> (attached). I've been successful at plotting it using the following
> code:
>
> fig=barplot(t(Annual_Precip_table), horiz=TRUE, space=0,
> col=c("grey70",
> "white"), axes=FALSE)
> .
> .
> The result is a stacked barplot with total annual rain represented by
> grey
> bars and total annual snow represented by white bars. This is great,
> however, I'd like to position the bars so that the rain bars are right
> justified on the axis and the snow bars are left justified on the axis.
>
> I looked around for ways to do this, and I'm not sure, but is plotrix
> capable of doing it using the barb function? Does anyone have
> experience
> with this kind of plot?
>
> Thanks.
>
> --
> Kevin Turner
> Department of Geography
> and Environmental Studies
> Wilfrid Laurier University
> Waterloo, Ontario