[Rd] Mac v Windows Mystery

David Winsemius dwinsemius at comcast.net
Wed Jan 30 20:55:52 CET 2013

I think neither of the attachments made it through, at least not to my  
client. If you use the regular Mac Mail.app (or any of hte Windows  
clients that I have seen). I suspect it labels the attachments as  
something other than MIME-text. The best way to get things though the  
R-mailing server is to give the files both .txt extensions and let the  
recipients change the extension names as needed. Then both Mac and  
Windows mail clients will give the proper mail headers so they reach  
the R-subscribers.

On Jan 30, 2013, at 11:37 AM, Roger Koenker wrote:

> Dear All,
> I'm trying to track down a problem with my quantreg package reported  
> by a user doing censored quantile regression.
> When he runs the test4.R file attached below (which reads the csv  
> file also attached) on his windows machine he gets
> an error like this:
>> Error in dimnames(B) <- list(c("tau", dimnames(x)[[2]], "Qhat"),  
>> NULL) :
>>  length of 'dimnames' [1] not equal to array extent
>> In addition: Warning message:
>> In rbind(grid[1:J], B, qhat) :
>>  number of columns of result is not a multiple of vector length  
>> (arg 2)
> However, when I run the same thing on my mac there is no error, no  
> warning.  And --
> more strangely-- running this on another windows laptop here in  
> Urbana also encounters
> no problems.  I thought that this might just be a seed problem since  
> there is a bootstrapping
> step at the end, but the original user has tried several seeds and  
> always gets this error.
> We are all running 2.15.1 and V4.94 of quantreg.  I understand that  
> YMMV, especially on
> windows,  but it is difficult to debug this sort of thing when I  
> can't reproduce it.  Any suggestions
> or other experience would be welcome.  The test problem takes a  
> minute or so to run on my
> mac.
> Thanks,
> Roger
> url:    www.econ.uiuc.edu/~roger            Roger Koenker
> email    rkoenker at uiuc.edu            Department of Economics
> vox:     217-333-4558                University of Illinois
> fax:       217-244-6678                Urbana, IL 61801
> ______________________________________________
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David Winsemius, MD
Alameda, CA, USA

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