[R] dotplot: labeling coordinates for each point

[Qifei Zhu]

Hi David,

Thanks! It looks much better now. but is there any way to add (x,y)
coordinates as labels to all the points in the graph? Best case if I can
enforce some conditions saying if (y>10,000) label, else no label. Any
advice is appreciated.

Best,
Tony

-----Original Message-----
From: David Winsemius [mailto:dwinsemius at comcast.net] 
Sent: Friday, April 24, 2009 10:48 PM
To: Qifei Zhu
Cc: r-help at r-project.org
Subject: Re: [R] dotplot: labeling coordinates for each point


On Apr 24, 2009, at 9:23 PM, Qifei Zhu wrote:
> I used dotplot to draw a graph for a dataset with size of 100. Since  
> the
> x-axis are all texts, so they are mixed up and not readable. Is  
> there any
> way to make it readable or how can I add labels to all the points  
> with its
> (x,y) coordinates? Thanks for your help.

Look up information on the scales parameter and rotate your label text:

dotplot(decrease ~ treatment, OrchardSprays, groups = rowpos,  
scales=list(x=list(rot=60,  
labels=c("AAAA","","","DDDD","","FFFF","","") )))

David Winsemius, MD
Heritage Laboratories
West Hartford, CT