[rkward-devel] GUI element for nxn matrix

[Thomas Friedrichsmeier]

Hi,

On Wednesday 29 August 2012, Birk Diedenhofen wrote:
> That sounds good! A simple table for numerical input would definitely cover
> my use case. But I think it would be better to have the matrix input in a
> modal window that pops up and not in a tab like the data.frame editor.

ok, that should be doable, too. Either way, don't hold your breath. At the 
moment, I'm trying to finish some other things that need to be done before the 
next release. And I'm not sure, how soon I'll get around to this, afterwards.

I'd suggest that you look into an interim solution based on the current 
options. Probably that's simply a varselector / varslot for selecting the 
correlation matrix as an existing R object (if you throw in an as.matrix() 
call, users can also supply an all-numerical data.frame, thus allowing them to 
enter the data in the existing editor).

Additionally, please open a feature request, once again listing your 
requirements, so it will remain visible until I find some time to work on it. 
It may also be interesting to start thinking about how exactly this could 
eventually be incorporated into the dialog UI. If you have a specific idea in 
mind, perhaps you could provide a mock-up / drawing.

> Would it also be possible to use this for vectors (nx1)? Or is their
> currently a way the user can type in a vector of arbitrary/a given length
> using the GUI?

No, not yet. But it's definitely on my list. The best option at this time is 
editing a 1-column data.frame. A few plugins simply use a text <input>, 
instructing the user to enter their data separated by comma or spaces, then 
turn that into a vector (i.e. in the .js:
    x = "c (" + getValue ("x").replace (/[, ]+/g, ", ") + ")";
).

Regards
Thomas
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