Hi there, I would like to omit some observations of a zoo vector
corresponding with some defined dates. So I wrote following codes:

 

> set.seed(1)

> dates <- seq(as.Date("2011-01-01"), as.Date("2011-01-31"), by="1
day")[-c(7,8,9,20,21,22)]

> mySeries <- zoo(rnorm(25), dates)

> mySeries

2011-01-01  2011-01-02  2011-01-03  2011-01-04  2011-01-05  2011-01-06
2011-01-10  2011-01-11  2011-01-12  2011-01-13  2011-01-14  2011-01-15 

-0.62645381  0.18364332 -0.83562861  1.59528080  0.32950777 -0.82046838
0.48742905  0.73832471  0.57578135 -0.30538839  1.51178117  0.38984324 

 2011-01-16  2011-01-17  2011-01-18  2011-01-19  2011-01-23  2011-01-24
2011-01-25  2011-01-26  2011-01-27  2011-01-28  2011-01-29  2011-01-30 

-0.62124058 -2.21469989  1.12493092 -0.04493361 -0.01619026  0.94383621
0.82122120  0.59390132  0.91897737  0.78213630  0.07456498 -1.98935170 

 2011-01-31 

 0.61982575 

> toOmit <- as.Date(c("2011-01-07", "2011-01-08", "2011-01-09"))

> mySeries[-toOmit]

Error in `-.Date`(toOmit) : unary - is not defined for Date objects

 

Can somebody point me how to rectify that error?

 

Thanks and regards,


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