[R] selecting points on 3D scatterplots

[stephen sefick]

rgl will rotate and zoom, but I don't know if you can select points.

On Tue, May 12, 2009 at 4:35 PM, Abby Drake
<abbygracedrake at googlemail.com> wrote:
> It looks like Rcmdr may be able to select points on 3D scatterplots
> however when I try to use it's 3dscatter plot function I get the error
> message:  could not find function "nice"
>
> If I copy the code:
>
> scatter3d(data$X, data$Z, data$Y, surface=FALSE, residuals=TRUE, bg="white",
> + axis.scales=TRUE, grid=TRUE, ellipsoid=FALSE, xlab="X", ylab="Z", zlab="Y")
>
> into the R console I get the same error message. Sorry I'm new - does
> anyone know where this missing "nice" function can be found?
>
>
> I tried using scatterplot3d but it doesn't rotate or zoom - which I
> need to be able to do to select the data... but thanks for the
> suggestion!
>
>
> 2009/5/12 Uwe Ligges <ligges at statistik.tu-dortmund.de>:
>> Or with scatterplot3d:
>>
>> The regular identify() usage with the iris data:
>>
>>  s3d <- scatterplot3d(iris[,1:3], color=as.numeric(iris[,5]))
>>  identify(s3d$xyz.convert(iris[,1:3]))
>>
>> or for locator: the values you get are the 2D representation of the current
>> coordinate system and you can use locator directly for putting text in such
>> as in:
>>
>> text(locator(1), "The iris data")
>>
>> If you want to convert back to 3D: This is not possible, because there is a
>> while line behind that point you are clicking on ....
>>
>> Best,
>> Uwe Ligges
>>
>>
>>
>>
>> Duncan Murdoch wrote:
>>>
>>> On 5/12/2009 3:08 PM, Abby Drake wrote:
>>>>
>>>> Hello Everyone,
>>>>
>>>> I am new to R and need some help.
>>>>
>>>> I have a matrix of x,y,z coordinates that I would like to
>>>> interactively plot in 3D and then using the cursor select points on
>>>> the plot and have the coordinates sent to a matrix. I am using the rgl
>>>> package to plot the data at the moment because it allows me to rotate
>>>> and zoom. I also tried cloud and scatterplot3D.
>>>>
>>>> I am looking for a function like 'locator' which is used to select
>>>> points on 2D scatterplots.
>>>
>>> There's no locator3d, but select3d is somewhat similar.
>>>
>>> You could write a locator3d function using the rgl.setMouseCallbacks,
>>> rgl.user2window and rgl.window2user functions, if you can figure out how to
>>> indicate depth with a mouse click.  identify3d might be a little easier.
>>>
>>> Duncan Murdoch
>>>
>>> ______________________________________________
>>> R-help at r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

								-K. Mullis