Converting to XTS loses data.frame structure
On Tue, May 29, 2012 at 2:11 PM, Noah Silverman <noahsilverman at ucla.edu> wrote:
Hello, I noticed something odd when working with data frames and xts objects. If I read in a CSV file, R creates a nice data.frame. ?This works well. If I then convert to an XTS object, I see that all the values in the data are now quoted. ?My data is a mix of numeric and character. ?This is usually seen when converting a data.frame to a matrix, as R will treat all the data as the same class. (character) How can I ensure that R creates an XTS object that is still a data.frame so that all the data are the correct type??
You can't. xts/zoo objects are a matrix with an index attribute. Since you can't mix types in a matrix, you can't mix types in an xts/zoo object. That said, part of the xts Google Summer of Code project is to create an xts-like object that allows mixed types. Best, -- Joshua Ulrich | FOSS Trading: www.fosstrading.com