Testing existence in xts
Try:
library(xts)
Loading required package: zoo
x <- xts(1:3, Sys.Date()+1:3) x
[,1] 2010-04-14 1 2010-04-15 2 2010-04-16 3
x['2010-04-17']
Data: integer(0) Index: integer(0)
length(x['2010-04-17'])
[1] 0
length(x['2010-04-16'])
[1] 1
HTH Jeff
On Tue, Apr 13, 2010 at 4:23 PM, Worik Stanton <worik.stanton at gmail.com> wrote:
How do I test for the existence of an entry in a xts? Given xts z
z
? ? ? ? ? ? ?z 2009-01-08 1.71 2009-01-09 1.72 2009-01-12 1.71 and I want to test if z["2009-01-10",] exists, how do I do it? cheers Worik -- Dig it out of the ground Melt it down Bury it Guard it
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Jeffrey Ryan jeffrey.ryan at insightalgo.com ia: insight algorithmics www.insightalgo.com