R help - Apr 2009 - dotplot: labeling coordinates for each point

Hi all,

 

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.

 

Best,

Tony

 


	[[alternative HTML version deleted]]

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

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

On 4/26/09, Qifei Zhu <zhu_qifei at yahoo.com.sg>
wrote:
> 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.
Sure, write a panel function. See the examples in ?xyplot.

-Deepayan

On Thu, May 7, 2009 at 7:42 AM, Qifei Zhu <zhu_qifei at yahoo.com.sg>
wrote:
> 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!
In that case

dotplot(y ~ x, xlab="Store", ylab="Revenue",
main="test",
        scales=list(x = list(draw = FALSE)),
        panel = function(x, y, ...) {
            panel.dotplot(x, y, ...)
            id <- y > 90
            panel.text(as.numeric(x[id]), y[id],
                       labels = sprintf("(%s,%g)",
as.character(x[id]), y[id]),
                       pos = 4)
        })

-Deepayan


>
>
>
> 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
>
>>
>
>>
>
>
>
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