[Rd] Wish there were a "strict mode" for R interpreter. What

[Spencer Graves]

Another example:


plot.landsurveydata: no visible binding for global variable 'value'
plot.landsurveydata: no visible binding for global variable 'variable'


plot.landsurveydata <- function(...){
# ...
qplot(time., value, data=X, color=variable, ...)
# where value and variable are columns of the data.frame X


       Is there a way to tell "R CMD check" that qplot looks for time., 
value and variable as columns of X?


       Thanks,
       Spencer


On 4/11/2011 9:04 AM, Spencer Graves wrote:
> On 4/11/2011 8:46 AM, Simon Urbanek wrote:
>> On Apr 11, 2011, at 11:28 AM, Davor Cubranic wrote:
>>
>>> On 2011-04-09, at 2:08 PM, Ted Harding wrote:
>>>
>>>> I think the right thing to so is to introduce the students to the
>>>> basics of scoping, early in the process of learning R.
>>> I know the basics of scoping perfectly well, but that doesn't stop 
>>> me from occasionally misspelling a variable name that only causes an 
>>> error much later.
>>>
>>> OTOH, I think with Perl you can start declaring your variables 
>>> "local" and keep the interpreter happy. But in R's context you then 
>>> have to also start declaring what you expect to inherit from parent 
>>> environments, and pretty soon the code is so encrusted with 
>>> annotation barnacles that it loses the simplicity that  makes R so 
>>> nice in the interactive mode.
>>>
>>> What would be really nice is if we had a smart R editor/IDE that 
>>> would "DWIM" and put a red underline under a misspelled name, but 
>>> leave it alone when, as Duncan said, it's in the environment.
>>>
>> ... which is, of course, impossible since the editor has no idea what 
>> environment you will evaluate the function in ... It can make 
>> assumptions but they may as wrong as the spurious warnings discussed 
>> so people will complain either way ;)
>
>       For the record, my "complaint" stemmed from my inability to see 
> a way to get rid of that message in that context.  In most cases, I've 
> found that message to be very valuable in identifying latent bugs in 
> code.  In that context, however, the message seemed inappropriate.  
> Duncan privately suggested I add "LazyData:  yes" to the package 
> DESCRIPTION file.  I did that, and the offending message disappeared!
>
>
>       Thanks again to Duncan.
>
>
>       Best Wishes,
>       Spencer
>
>> Cheers,
>> Simon
>>
>> ______________________________________________
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>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>
>


-- 
Spencer Graves, PE, PhD
President and Chief Operating Officer
Structure Inspection and Monitoring, Inc.
751 Emerson Ct.
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