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How to convert a data frame column to numeric type?
... 4th column are factor, and the last one is "purely" numeric.
If you utilize transform function, you can convert the fake_char into numeric, but not the char variable itself.
> transform(d, char = as.numeric(char))
char fake_char fac char_fac num
1 NA 1 1 a 1
2 NA ...
Is there a way to get rid of accents and convert a whole string to regular letters?
...
Use java.text.Normalizer to handle this for you.
string = Normalizer.normalize(string, Normalizer.Form.NFD);
// or Normalizer.Form.NFKD for a more "compatable" deconstruction
This will separate all of the accent marks from the characters. Th...
Convert a String In C++ To Upper Case
...
ana
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answered Apr 9 '09 at 17:47
Tony EdgecombeTony Edgecombe
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How to initialize a JavaScript Date to a particular time zone
I have date time in a particular timezone as a string and I want to convert this to the local time. But, I don't know how to set the timezone in the Date object.
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PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
... Aug 13 '15 at 15:50
Scott Arciszewski
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answered Dec 4 '09 at 10:55
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Benefits of inline functions in C++?
...performance for the code that the compiler outputs, but with today's optimized compilers, fast CPUs, huge memory etc. (not like in the 1980< where memory was scarce and everything had to fit in 100KB of memory) what advantages do they really have today?
...
Difference between numpy.array shape (R, 1) and (R,)
...ATEIFCOPY : False
>>> a.dtype
dtype('int64')
>>> a.itemsize
8
>>> a.strides
(8,)
>>> a.shape
(12,)
Here the shape (12,) means the array is indexed by a single index which runs from 0 to 11. Conceptually, if we label this single index i, the array a looks like ...
What is a message pump?
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A CORS POST request works from plain JavaScript, but why not with jQuery?
... Will MasonWill Mason
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5
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byte[] to hex string [duplicate]
...telho
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answered Mar 8 '09 at 6:56
GuffaGuffa
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