[R] Tables package - remove NAs and NaN

Duncan Murdoch murdoch.duncan at gmail.com
Tue Apr 23 14:28:06 CEST 2013

On 13-04-23 8:07 AM, Liviu Andronic wrote:
> Dear Duncan,
> Thank you for your explanations.
> On Tue, Apr 23, 2013 at 12:31 PM, Duncan Murdoch
> <murdoch.duncan at gmail.com> wrote:
>> This isn't something that the package is designed to handle:  if you say
>> p*a, it wants all combinations of p and a.
> To your knowledge is there another 'complex tables' package that could
> achieve this?

tables can now.

>> If I wanted a table like that, I'd use a different hack.  One possibility is
>> to create that interaction column, but display it as just the initial
>> letter, labelled p, and then add another column to contain the a values as
>> data.  It would be tricky to get the formatting right.
>> Another possibility is to generate the whole table with the N=0 rows, and
>> then post-process it to remove those rows, and adjust the row labels
>> appropriately.  This approach probably gives the nicer result, but the
>> post-processing is quite messy:  you need to delete some rows from the
>> table, from its rowLabels attribute, and from the justification attributes
>> of both the table and its rowLabels.  (I should add a [ method to the
>> package to hide this messiness.)
> I think a subsetting method would be useful, indeed.
>> A third hack is less of a hack:  don't do that.  Just format the mean and sd
>> in a way that displays the NA and NaN values as blanks.
> I think this could work, at least for unofficial displays of the
> summaries, but I'm not sure where to start from. What
> function/argument should one use? Could you give an example?

See the vignette.  It includes some custom formatting functions.

Duncan Murdoch

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