R help - Aug 2008 - Using interactive plots to get information about data points

I have been experimenting with interactive packages such iplots and playwith. 
Consider the following sample dataset:

A  B  C  D
1  5  5  9
3  2  8  4
1  7  3  0
7  2  2  6

Let's say I make a plot of variable A.  I would like to be able to click on
a data point (e.g. 3) and have a pop-up window tell me the corresponding
value for variable D (e.g. 4).  I am also trying to produce multiple small
plots.  For example, four side-by-side boxplots for each of the four
variables A, B, C, D.

Any help would be greatly appreciated!  Thanks!
-- 
View this message in context:
http://www.nabble.com/Using-interactive-plots-to-get-information-about-data-points-tp19116114p19116114.html
Sent from the R help mailing list archive at Nabble.com.

jcarmichael <jcarmichael314 <at> gmail.com> writes:
> 
> 
> I have been experimenting with interactive packages such iplots and
playwith.
> Consider the following sample dataset:
> 
> A  B  C  D
> 1  5  5  9
> 3  2  8  4
> 1  7  3  0
> 7  2  2  6
> 
> Let's say I make a plot of variable A.  I would like to be able to
click on
> a data point (e.g. 3) and have a pop-up window tell me the corresponding
> value for variable D (e.g. 4).  
?identify with labels argument.

Another approach you might like to consider is to use GGobi (www.ggobi.org) with
the rggobi package linking directly to it from R.  GGobi is built specifically
for this kind of interactive purpose.
> I am also trying to produce multiple small
> plots.  For example, four side-by-side boxplots for each of the four
> variables A, B, C, D.
?par... eg par(mfrow=c(1,4)) (for base graphics).


Hope this helps.

Michael Bibo
Queensland Health

> I have been experimenting with interactive packages such iplots and  
> playwith. Consider the following sample dataset:
> A B C D
> 1 5 5 9
> 3 2 8 4
> 1 7 3 0
> 7 2 2 6
> Let's say I make a plot of variable A. I would like to be able to  
> click on a data point (e.g. 3) and have a pop-up window tell me the  
> corresponding value for variable D (e.g. 4).

You're right that iplots can't do that (it's on the wishlist), but
it
offers alternatives.  As a multiwindowing package, it is natural to  
have graphics displays open for all variables of current interest.   
This means that selecting a point highlights it in all displays and  
you can see or query the corresponding values.


Antony Unwin
Professor of Computer-Oriented Statistics and Data Analysis,
Mathematics Institute,
University of Augsburg,
86135 Augsburg, Germany
Tel: + 49 821 5982218

antony.unwin@math.uni-augsburg.de

http://stats.math.uni-augsburg.de/




	[[alternative HTML version deleted]]