[R] Identify points (was Plot error)

[David Winsemius]

On Jul 18, 2010, at 9:43 AM, James Platt wrote:

> This is exactly what I want as I will have several thousand data  
> points on the final graph i make, so the scroll over option is ideal.
>
> I've read the TeachingDemos pdf, I'm working on a Mac so Cannot use  
> HWidentify.

Not true.

> I have installed and loaded the TeachingDemos package but im having  
> trouble loading the tkrplot package after installing it won't load.
>
> > library(tcltk)

In the Mac GUI Package Installer, I cannot even find a package by that  
name. However, then running the HWidentify example after  
require(Teaching Demos),  tcltk does get loaded as well as X11, making  
me think you need to provide further information such as that  
requested in the Posting Guide. You may also want to review the  
material in the "R for Mac OS X FAQ".

-- 
David.

 > sessionInfo()
R version 2.11.1 Patched (2010-06-14 r52281)
x86_64-apple-darwin9.8.0

locale:
[1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] tcltk     splines   stats     graphics  grDevices utils
[7] datasets  methods   base

other attached packages:
[1] tkrplot_0.0-18    TeachingDemos_2.6 gtools_2.6.2
[4] Design_2.3-0      Hmisc_3.8-1       survival_2.35-8
[7] lattice_0.18-8

loaded via a namespace (and not attached):
[1] cluster_1.12.3 grid_2.11.1    tools_2.11.1

> Loading Tcl/Tk interface ... Error : .onLoad failed in  
> loadNamespace() for 'tcltk', details:
>  call: dyn.load(file, DLLpath = DLLpath, ...)
>  error: unable to load shared library '/Library/Frameworks/ 
> R.framework/Resources/library/tcltk/libs/i386/tcltk.so':
>  dlopen(/Library/Frameworks/R.framework/Resources/library/tcltk/libs/ 
> i386/tcltk.so, 10): Library not loaded: /usr/local/lib/libtcl8.5.dylib
>  Referenced from: /Library/Frameworks/R.framework/Resources/library/ 
> tcltk/libs/i386/tcltk.so
>  Reason: image not found
> Error: package/namespace load failed for 'tcltk'
> On 17 Jul 2010, at 18:12, Peter Ehlers wrote:
>
>> On 2010-07-17 9:50, James Platt wrote:
>>> The other question I have:
>>>
>>> Is there any way to link the data point on the graph to the name  
>>> of a
>>> row
>>>
>>> i.e in my table:
>>>
>>> name value_1 value_2
>>> bill       1            4
>>> ben      2           2
>>> jane     3           1
>>>
>>> I click on the data point at 2,2 and it would read out ben
>>>
>>
>> Check out HWidentify or HTKidentify in pkg:TeachingDemos.
>>
>> -Peter Ehlers
>>

David Winsemius, MD
West Hartford, CT