[R] Improvement: function cut

[Jeff Newmiller]

Re your objection that "the user has to suspect that some values were not included" applies equally to your proposed warn option. There are a lot of ways to introduce NAs... in real projects all analysts should be suspecting this problem.

On September 17, 2021 3:01:35 PM PDT, Leonard Mada via R-help <r-help using r-project.org> wrote:
>Thank you Andrew.
>
>
>Is there any reason not to make: include.lowest = TRUE the default?
>
>
>Regarding the NA:
>
>The user still has to suspect that some values were not included and run 
>that test.
>
>
>Leonard
>
>
>On 9/18/2021 12:53 AM, Andrew Simmons wrote:
>> Regarding your first point, argument 'include.lowest' already handles 
>> this specific case, see ?.bincode
>>
>> Your second point, maybe it could be helpful, but since both 
>> 'cut.default' and '.bincode' return NA if a value isn't within a bin, 
>> you could make something like this on your own.
>> Might be worth pitching to R-bugs on the wishlist.
>>
>>
>>
>> On Fri, Sep 17, 2021, 17:45 Leonard Mada via R-help 
>> <r-help using r-project.org <mailto:r-help using r-project.org>> wrote:
>>
>>     Hello List members,
>>
>>
>>     the following improvements would be useful for function cut (and
>>     .bincode):
>>
>>
>>     1.) Argument: Include extremes
>>     extremes = TRUE
>>     if(right == FALSE) {
>>         # include also right for last interval;
>>     } else {
>>         # include also left for first interval;
>>     }
>>
>>
>>     2.) Argument: warn = TRUE
>>
>>     Warn if any values are not included in the intervals.
>>
>>
>>     Motivation:
>>     - reduce risk of errors when using function cut();
>>
>>
>>     Sincerely,
>>
>>
>>     Leonard
>>
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>>
>
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>
>______________________________________________
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-- 
Sent from my phone. Please excuse my brevity.