R help - Apr 2005 - Ordering scales in xYplot.Hmisc

Dear R community,

I am using xYplot() from the Hmisc package. The package works great to 
plot means + CI. But I am having issues handling the scales.

I am plotting "Soil Clay content" vs "Soil depth" by
"land use".

Usually in this type of graphs it is better to place the variable "soil 
depth" in the y-axis and it should be ordered downward by depth (0-5 cm, 
5-10 cm, 10-20 cm).

I can't figure out how to sort/order the scale to obtain the graph I 
need, any insights will be appreciated.

Best regards and have a nice weekend,

Jose

 > version
          _
platform i386-pc-mingw32
arch     i386
os       mingw32
system   i386, mingw32
status
major    2
minor    0.1
year     2004
month    11
day      15
language R

################ CODE #####################
library(Hmisc)
ron <- read.csv("http://www.tc.umn.edu/~jahernan/ron.csv")
ron
#sapply(ron,class)

ron$depth <- factor(ron$depth)
levels(ron$depth) <- c("0-5", "5-10", "10-20")
ron

Dotplot(depth ~ Cbind(clay_mean,clay_lower,clay_upper) |land,
         data=ron,
         xlim=c(22,36),
         ylab="Soil Depth [cm]",
         xlab="Clay Content [%]",
         main=c("Clay Content by Soil Depth and Land Use. Rondonia,
         Brasil"))
################ CODE #####################


-- 
Jose A. Hernandez
Ph.D. Candidate
Precision Agriculture Center

Department of Soil, Water, and Climate
University of Minnesota
1991 Upper Buford Circle
St. Paul, MN 55108

Ph. (612) 625-0445, Fax. (612) 625-2208

On Friday 01 April 2005 12:41, Jose A. Hernandez wrote:
> Dear R community,
>
> I am using xYplot() from the Hmisc package. The package works great to
> plot means + CI. But I am having issues handling the scales.
>
> I am plotting "Soil Clay content" vs "Soil depth" by
"land use".
>
> Usually in this type of graphs it is better to place the variable
"soil
> depth" in the y-axis and it should be ordered downward by depth (0-5
cm,
> 5-10 cm, 10-20 cm).
>
> I can't figure out how to sort/order the scale to obtain the graph I
> need, any insights will be appreciated.
>
> Best regards and have a nice weekend,
>
> Jose
>
>  > version
>
>           _
> platform i386-pc-mingw32
> arch     i386
> os       mingw32
> system   i386, mingw32
> status
> major    2
> minor    0.1
> year     2004
> month    11
> day      15
> language R
>
> ################ CODE #####################
> library(Hmisc)
> ron <- read.csv("http://www.tc.umn.edu/~jahernan/ron.csv")
> ron
> #sapply(ron,class)
>
> ron$depth <- factor(ron$depth)
> levels(ron$depth) <- c("0-5", "5-10",
"10-20")
Specify the order that you want instead of relying on the default. e.g., 

ron$depth <- factor(ron$depth, levels = rev(sort(unique(ron$depth))))
levels(ron$depth) <- c("10-20", "5-10", "0-5")

Deepayan
> ron
>
> Dotplot(depth ~ Cbind(clay_mean,clay_lower,clay_upper) |land,
>          data=ron,
>          xlim=c(22,36),
>          ylab="Soil Depth [cm]",
>          xlab="Clay Content [%]",
>          main=c("Clay Content by Soil Depth and Land Use. Rondonia,
>          Brasil"))
> ################ CODE #####################