[datatable-help] Apparent loss of decimals when reading a numeric column with fread() !

[Bacou, Melanie]

Hi,
Thx, I see I have another problem, not related to data.table (sorry). R 
seems to truncate numbers in the console. Not sure what's going on.

--Mel.

```{r}
 > 1-0.5
[1] 0.5
 > 2008-0.05
[1] 2008
 > 45-0.5
[1] 44.5
 > 100-0.5
[1] 99.5
 > 1000-0.5
[1] 1000
 > 10000-0.5
[1] 10000
```

On 8/4/2015 7:16 AM, nachti wrote:
> Hi,
> copying your code, everything works as expected for me.
> Maybe you just referenced to a wrong object (pcn08)?
>
> ```
>> library(data.table)
> data.table 1.9.4  For help type: ?data.table
> *** NB: by=.EACHI is now explicit. See README to restore previous behaviour.
>> pcn <- fread("PovCalServlet_15.08.03.csv")
> sapply(pcn, class)
> pcn <- fread("PovCalServlet_15.08.03.csv")
>> sapply(pcn, class)
>      country     povLine        mean         hcr         gap         sev
> "character"   "numeric"   "numeric"   "numeric"   "numeric"   "numeric"
>        watts        popM     yearNum
>    "numeric"   "numeric"   "numeric"
>> pcn08$yearNum
> Error: object 'pcn08' not found
>> pcn$yearNum
>   [1] 2008.50 2011.50 2009.25 2009.00 2006.00 2007.50 2007.00 2008.00 2011.00
> [10] 2004.00 2005.50 2011.00 2008.00 2010.50 2005.00 2003.00 2005.50 2008.00
> [19] 2007.00 2012.00 2002.00 2005.40 2010.00 2007.00 2010.00 2010.23 2010.00
> [28] 2008.00 2008.00 2012.00 2006.00 2008.64 2009.50 2011.00 2009.83 2010.83
> [37] 2010.00 2011.00 2006.50 2011.00 2010.67 2009.00 2009.50 2011.80 2011.00
> [46] 2008.00 2012.50 2009.30 2010.00 2008.50 2011.50 2009.25 2009.00 2006.00
> [55] 2007.50 2007.00 2008.00 2011.00 2004.00 2005.50 2011.00 2008.00 2010.50
> [64] 2005.00 2003.00 2005.50 2008.00 2007.00 2012.00 2002.00 2005.40 2010.00
> [73] 2007.00 2010.00 2010.23 2010.00 2008.00 2008.00 2012.00 2006.00 2008.64
> [82] 2009.50 2011.00 2009.83 2010.83 2010.00 2011.00 2006.50 2011.00 2010.67
> [91] 2009.00 2009.50 2011.80 2011.00 2008.00 2012.50 2009.30 2010.00
>> sessionInfo()
> R version 3.2.1 (2015-06-18)
> Platform: x86_64-suse-linux-gnu (64-bit)
> Running under: openSUSE 13.1 (Bottle) (x86_64)
>
> locale:
>   [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
>   [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
>   [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
>   [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
>   [9] LC_ADDRESS=C               LC_TELEPHONE=C
> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> other attached packages:
> [1] data.table_1.9.4
>
> loaded via a namespace (and not attached):
> [1] compiler_3.2.1 magrittr_1.5   plyr_1.8.3     tools_3.2.1
> reshape2_1.4.1
> [6] Rcpp_0.11.6    stringi_0.5-5  stringr_1.0.0  chron_2.3-4
> ```
>
> ~g
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/Apparent-loss-of-decimals-when-reading-a-numeric-column-with-fread-tp4710722p4710727.html
> Sent from the datatable-help mailing list archive at Nabble.com.
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