I am having some troubles with leading and trailing whitespace in a data.frame. Eg I like to take a look at a specific row in a data.frame based on a certain condition:
> myDummy[myDummy$country == c("Austria"),c(1,2,3:7,19)]
 codeHelper country dummyLI dummyLMI dummyUMI
 dummyHInonOECD dummyHIOECD dummyOECD
<0 rows> (or 0-length row.names)
I was wondering why I didn't get the expected output since the country Austria obviously existed in my data .frame. After looking through my code history and trying to figure out what went wrong I tried:
> myDummy[myDummy$country == c("Austria "),c(1,2,3:7,19)]
codeHelper country dummyLI dummyLMI dummyUMI dummyHInonOECD dummyHIOECD
18 AUT Austria 0 0 0 0 1
All I have changed in the command is additional whitespace after Austria.
Further annoying problems obviously arise. Eg when I like to merge two frames based on the country column. One data.frame uses "Austria " while the other frame has "Austria". The matching doesn't work.
Is there a nice way to 'show' the whitespace on my screen so that I am aware of the problem?
And can I remove the leading and trailing whitespace in R?
So far I used to write a simple Perl script which removes the whitespace but it would be nice if I can somehow do it inside R.