[datatable-help] leading spaces on column names from CSV file

[jholtman]

I have a CSV file that I had been reading with 'read.csv' and it turns out
that the column names had leading spaces in some instances, but read.csv
would remove them.

I tried to read the file with fread and it was keeping the leading spaces. 
Here is dump of the session:

> positXY <- read.csv(positionFile, as.is = TRUE)
> 
> 
> str(positXY)
'data.frame':   12 obs. of  8 variables:
 $ ieee           : chr  "1972cd01004b1200" "6375cd01004b1200"
"5875cd01004b1200" "1972cd01004b1200" ...
 $ startTime      : chr  "13:46" "13:46" "13:46" "13:53" ...  # no leading
space on next three
 $ endTime        : chr  "13:51" "13:51" "13:51" "13:58" ...
 $ x              : int  65 65 65 65 65 65 65 65 65 65 ...
 $ y              : int  45 45 45 45 45 45 45 45 45 45 ...
 $ z              : num  3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 ...
 $ deviceDirection: chr  "east" "west" "north" "south" ...
 $ test.          : logi  NA NA NA NA NA NA ...
> positXY <- fread(positionFile)
> 
> str(positXY)
Classes ‘data.table’ and 'data.frame':  12 obs. of  8 variables:
 $ ieee           : chr  "1972cd01004b1200" "6375cd01004b1200"
"5875cd01004b1200" "1972cd01004b1200" ...
 $  startTime     : chr  "13:46" "13:46" "13:46" "13:53" ...  # leading
space on next three
 $  endTime       : chr  "13:51" "13:51" "13:51" "13:58" ...
 $  x             : int  65 65 65 65 65 65 65 65 65 65 ...
 $ y              : int  45 45 45 45 45 45 45 45 45 45 ...
 $ z              : num  3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 ...
 $ deviceDirection: chr  "east" "west" "north" "south" ...
 $  test#         : int  NA NA NA NA NA NA NA NA NA NA ...
 - attr(*, ".internal.selfref")=<externalptr> 
> sessionInfo()
R version 3.0.2 (2013-09-25)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=English_United States.1252 
[2] LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

attached base packages:
[1] stats     grDevices utils     datasets  graphics  methods  
[7] base     

other attached packages:
[1] data.table_1.8.10 bitops_1.0-6     

loaded via a namespace (and not attached):
[1] tools_3.0.2


Is it possible to have the leading spaces removed automatically, or via a
parameter?



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