[RQt-devel] qdataFrameModel questions comments

[Michael Lawrence]

On Thu, Sep 9, 2010 at 3:07 PM, John Verzani <verzani at math.csi.cuny.edu>wrote:

> I've been playing around with qdataFrameModel and have the following
> comments:
>
> * NA for integer values prints a crazy string "-21474...". For numeric it
> prints "inf".
> * factors print out as their integer representation
>
> For this, and other reasons,  it might be nice to be able to set the
> display role (rather than it be the default) via .name.display
>
>
The display can be fixed up. I've recently done that for RGtkDataFrame.


> * names can't have a "." in them
>
>
Would a different symbol work? Only other option really is '_'. Could take a
completely different approach of specifying role - column mappings as extra
parameters to the function. I was not a big fan of that, because it is not
as self-contained.


> And a question:
>
> How can I subclass this class? I want to add a flags() method and setData()
> method to edit the values.
>
>
Perhaps it would have been a better idea to implement this in R. As it
stands, there's no interface for subclassing it.


> Thanks for any help. --John
>
>
> --
> John Verzani
> Chair, Department of Mathematics
> College of Staten Island, CUNY
> verzani at math.csi.cuny.edu
>
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