datetime - Lubridate in R throws up infinite recursion error; but only after 48K rows -


my table "march" has 92,497 rows , 2 columns. 

head(march)    unique.key             reportdate 1:   30062874 03/01/2015 12:08:00 2:   30062909 03/01/2015 01:43:57 3:   30062973 03/01/2015 01:36:21 4:   30063031 03/01/2015 12:44:00 5:   30063086 03/01/2015 01:22:59 6:   30063107 03/01/2015 02:00:54

i'm trying convert dates posixct using lubridate. starting smaller file of 500 rows, this:

march$reportdate <- mdy_hms(march$reportdate, tz="")

gave me:

   unique.key          reportdate 1:   30180483 2015-03-15 23:59:00 2:   30181183 2015-03-15 23:58:00 3:   30185134 2015-03-15 23:56:24

trying run on full table 92k rows, got error:

error: evaluation nested deeply: infinite recursion / options(expressions=)?

error during wrapup: evaluation nested deeply: infinite recursion / options(expressions=)?

reducing number of rows, able convert 48,000 rows. error comes @ rows => 48,001. line 48,001 looked fine. skipped 47,999 rows in read.csv , remaining 44k rows converted expected.

the csv here. i'm on mac 10.9 , using rstudio v0.98,

sessioninfo()  r version 3.1.3 (2015-03-09)  platform: x86_64-apple-darwin13.4.0 (64-bit)  running under: os x 10.9.1   locale: [1] en_us.utf-8/en_us.utf-8/en_us.utf-8/c/en_us.utf-8/en_us.utf-8   attached base packages: [1] stats graphics grdevices utils datasets methods base   other attached packages: [1] lubridate_1.3.3 plyr_1.8.2 data.table_1.9.4   loaded via namespace (and not attached): [1] chron_2.3-45   digest_0.6.8     magrittr_1.5     memoise_0.2.1 [5] rcpp_0.11.6    reshape2_1.4.1   stringi_0.4-1    stringr_1.0.0 [9] tools_3.1.3

appreciate pointers/suggestions what's going on.


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