dotplot: labeling coordinates for each point

Hi Deepayan,



I guess I?m quite confusing when asking the question. I was actually looking
for labels beside the dot in the graph (shown below), rather than the labels
on the x-axis. Is that possible? Thanks a lot!

Best,

Tony





-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of Deepayan Sarkar
Sent: Thursday, May 07, 2009 1:44 AM
To: Qifei Zhu
Cc: r-help at r-project.org
Subject: Re: [R] dotplot: labeling coordinates for each point



On Wed, May 6, 2009 at 6:54 PM, Qifei Zhu <zhu_qifei at yahoo.com.sg> wrote:

Hi Deepayan,

Thanks for the reply. here is a very simple example of what I'm looking
for:

y=c(100,0,-20)

x=c("Atlanta", "Baltimore", "Berkeley CA")

dotplot(y~x, xlab="Store", ylab="Revenue",main="test",
scale=list(rot=60))

Basically it produces a graph of city on the x-axis and its associated
revenue

on the y-axis. In the real data set, the x-axis will be filled of tens or
even hundreds

of cities, so I wanna label the dots in the graph whenever the revenue (y
value) is

greater than a threshold, let's say 90 in this case. The labels should be
in (x,y)

format, which is (Atlanta, 100) in this case. Appreciate a lot for your
help!

dotplot(y~x, xlab="Store", ylab="Revenue",main="test",

        xlim = ifelse(y > 90, sprintf("(%s,%g)", x, y), ""),

        scales=list(rot=60))



-Deepayan

Best,

Tony

-----Original Message-----

From: Deepayan Sarkar [mailto:deepayan.sarkar at gmail.com]

Sent: Wednesday, May 06, 2009 8:40 PM

To: Qifei Zhu

Cc: David Winsemius; r-help at r-project.org

Subject: Re: [R] dotplot: labeling coordinates for each point

On Tue, May 5, 2009 at 7:04 PM, Qifei Zhu <zhu_qifei at yahoo.com.sg> wrote:

Hi Deepayan,

Thanks for the hint. I spent some time on the research but haven't got
any luck in writing the custom panel function for the conditional labeling
of points in a graph. Could you please provide some more thoughts and
probably some pseudo code? Thank you so much for your time!

I'll be happy to try if you provide a reproducible example.

-Deepayan