[R] How to declare an array with columns storing different datatypes/precision

Suresh_FSFM suresh.ghalsasi at gmail.com
Wed Feb 4 16:20:48 CET 2009

Ok. Array or Dataframe.. does not matter.. as long as I can extract the
required dataelement. :-)
Can you please send me pointer or reference to read about usage of "fancy
floating points" or "how to declare variables storing different datatypes"?

Thannk you.


Duncan Murdoch-2 wrote:
> On 2/4/2009 8:57 AM, Suresh_FSFM wrote:
>> Dear R- Experts,
>> Seek your help.
>> I want to creata data as follows.
>> Ref_array with 4 columns.
>> 1st column should store data of precision: 8.4 (i.e. 8 digits before
>> decimal
>> point and 4 digits after decimal points)
>> 2nd column: should store data of type date "yyyy-mm-dd hh:mm:ss"
>> 3rd column: only integer value. No decimal points
>> 4th column: percentage values
> In R, an array is all one data type, so you can't do that.  However, you 
> can have a dataframe that comes close:  but there is no special type for 
>   8.4 or percentage values, you'd need to use floating point (or fancy 
> handling of integers) for those.
> Duncan Murdoch
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