[R] Woring message in as.yearmon()

[Gabor Grothendieck]

I can't reproduce that.  When I run it I get no warning.  Check
your versions:

> Lines <- "1946    4 1.27
+  1946    5 1.27
+  1946    6 1.27
+  1946    7 1.27
+  1946    8 1.52
+  1946    9 1.52
+  1946   10 1.52
+  1946   11 1.52
+  1946   12 1.62
+  1947    1 1.62
+  1947    2 1.62
+  1947    3 1.62
+  1947    4 1.87
+  1947    5 1.87
+  1947    6 1.87"
> res <- read.table(textConnection(Lines))
> library(zoo)
Warning message:
closing unused connection 3 (Lines)
> as.yearmon(paste(res[, 1], res[, 2], sep = "-"))
 [1] "Apr 1946" "May 1946" "Jun 1946" "Jul 1946" "Aug 1946" "Sep 1946"
 [7] "Oct 1946" "Nov 1946" "Dec 1946" "Jan 1947" "Feb 1947" "Mar 1947"
[13] "Apr 1947" "May 1947" "Jun 1947"
>
> R.version.string # Windows Vista
[1] "R version 2.7.2 (2008-08-25)"
> packageDescription("zoo")$Version
[1] "1.5-4"


On Wed, Sep 10, 2008 at 2:15 PM, Megh Dal <megh700004 at yahoo.com> wrote:
> I have following dataset:
>
>> res
>      [,1] [,2] [,3]
>  [1,] 1946    4 1.27
>  [2,] 1946    5 1.27
>  [3,] 1946    6 1.27
>  [4,] 1946    7 1.27
>  [5,] 1946    8 1.52
>  [6,] 1946    9 1.52
>  [7,] 1946   10 1.52
>  [8,] 1946   11 1.52
>  [9,] 1946   12 1.62
> [10,] 1947    1 1.62
> [11,] 1947    2 1.62
> [12,] 1947    3 1.62
> [13,] 1947    4 1.87
> [14,] 1947    5 1.87
> [15,] 1947    6 1.87
>
> Now I write following code :
>
>> as.yearmon(paste(res[,1], res[,2], sep="-"))
>  [1] "Apr 1946" "May 1946" "Jun 1946" "Jul 1946" "Aug 1946" "Sep 1946" "Oct 1946" "Nov 1946" "Dec 1946"
> [10] "Jan 1947" "Feb 1947" "Mar 1947" "Apr 1947" "May 1947" "Jun 1947"
> Warning message:
> In if (nch == 1) "%Y-%m" else "%Y-%m-%d" :
>  the condition has length > 1 and only the first element will be used
>
> Can anyone please tell me why this warning message is coming and what is the remedy?
>
> Regards,
>
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