R help - Dec 2007 - Adding data labels to Lattice plots

Hi,

I am new to lattice graphics and have the following question. I have a
dataframe d2:
     cat PointsInTime MeanScore
1 Parent       Intake  26.25000
2  Youth       Intake   9.75000
3 Worker       Intake  20.63636
4 Parent    Discharge  24.00000
5  Youth    Discharge  15.60000
6 Worker    Discharge  23.90909

and to produce a plot I am using the following code

print(xyplot(MeanScore ~ PointsInTime, d2, groups = cat, type = 'o',
        xlab = "Points in Time", ylab = "Mean Score", aspect
= 0.7,
        auto.key = list(points = TRUE, lines = TRUE, space =
"right")))

However, I want to data labels to the plot and think I need to use the panel
function, but am not sure how to proceed. Please help

Thanks
Chandra

-- 
Chandrasekhar Ganduri
320 West Union St, APT # 105
Athens, OH - 45701
Ph: 740-274-9170

	[[alternative HTML version deleted]]

> I am new to lattice graphics...
> 
Me too, for the most part, so this might not be great advice.


> print(xyplot(MeanScore ~ PointsInTime, d2, groups = cat, type =
'o',
>         xlab = "Points in Time", ylab = "Mean Score",
aspect = 0.7,
>         auto.key = list(points = TRUE, lines = TRUE, space =
"right")))
> 
This will get the labels on the points, but you need a way to avoid
overlapping labels. And the xyplot is not maintaining the lines and grouping
in this new arrangement.

panel1 = function(x, y) {
     panel.xyplot(x, y)
     panel.text(PointsInTime, MeanScore,
          labels=round(MeanScore, digits=2), pos=2, offset=0.8)
     }

xyplot(MeanScore ~ PointsInTime, data=stuff, groups=cat, type='o',
        xlab = "Points in Time", ylab = "Mean Score", aspect
= 0.7,
        auto.key = list(points = TRUE, lines = TRUE, space = "right"),
        panel=panel1)

-----
David Hewitt
Virginia Institute of Marine Science
http://www.vims.edu/fish/students/dhewitt/
-- 
View this message in context:
http://www.nabble.com/Adding-data-labels-to-Lattice-plots-tp14297921p14307638.html
Sent from the R help mailing list archive at Nabble.com.

Thanks for the reply..though I am trying to still work around the problem of
overlapping labels

-- 
Chandrasekhar Ganduri
320 West Union St, APT # 105
Athens, OH - 45701
Ph: 740-274-9170

	[[alternative HTML version deleted]]

Hi,

I got something to work...thanks for the help.

Herez the code -

xyplot(MeanScore ~ PointsInTime, d2, groups=cat, type='o',
        xlab = "Points in Time", ylab = "Mean Score", aspect
= 0.7,
        auto.key = list(points = TRUE, lines = TRUE, space = "right"),
        panel=function(x, y,...) {
           panel.xyplot(x, y,...)
        panel.text(d2$PointsInTime, d2$MeanScore,
        labels=round(d2$MeanScore, digits=2), pos=4, offset=0.8)
     }
)


This takes care of the xyplot maintaining the lines and grouping, but not
overlapping labels for which I could not find a solution

Chandra

-- 
Chandrasekhar Ganduri
320 West Union St, APT # 105
Athens, OH - 45701
Ph: 740-274-9170

	[[alternative HTML version deleted]]