sprintf crash (PR#2327)

2) Under MacOS 10.2.2. Given the following dataset:

summary(missing.data)

   Hosp..No.                   Category      Offset        Side
 r060093:  4   F Post op 0.5 year  :62   Min.   :-5.8333   L: 63
 r023250:  3   E Pre op 0.5 year   :54   1st Qu.:-0.4167   R:141
 r026316:  3   H Post op 1.5 years :44   Median : 7.7083
 r032583:  3   G Post op 1 year    :41   Mean   :14.2623
 r036827:  3   I Post op 2 years   : 3   3rd Qu.:27.0833
 r055869:  3   A Pre op > 2.5 years: 0   Max.   :47.6667
 (Other):185   (Other)             : 0

 <snip>

The line:

sprintf("%s\t%1.0f", missing.data$Hosp..No., missing.data$V1)

always crashes R.

 Yes, that's because  missing.data$Hosp..No. isn't a string, it's a
factor.  In R 1.6.0 this gives an error rather than a crash.

You probably want

  sprintf("%s\t%1.0f", as.character(missing.data$Hosp..No.),
	missing.data$V1)



	-thomas