Hi,
It is not mentioned whether your dataset is a matrix of data.frame. Also,
please use ?dput() to show the dataset. I get similar errors with matrix.
MOPrice <-
data.frame(Date=c("2013-12-31","2013-12-31","2013-12-31","2013-11-28"),stringsAsFactors=FALSE)
subset(MOPrice, as.Date(Date,"%Y-%m-%d")==as.Date("2013-11-28","%Y-%m-%d"))
# Date
#4 2013-11-28
MOPrice1 <-
data.frame(Date=c("2013-12-31","2013-12-31","2013-12-31"),stringsAsFactors=FALSE)
subset(MOPrice1, as.Date(Date,"%Y-%m-%d")==as.Date("2013-11-28","%Y-%m-%d"))
#[1] Date
#<0 rows> (or 0-length row.names)
MOPrice2 <- data.frame(Date=c("2013-12-31","2013-12-31","2013-12-31"))
subset(MOPrice2,
as.Date(MOPrice2$Date,"%Y-%m-%d")==as.Date("2013-11-28","%Y-%m-%d"))
#[1] Date
#<0 rows> (or 0-length row.names)
subset(MOPrice1,
as.Date(MOPrice1$Date,"%Y-%m-%d")==as.Date("2013-11-28","%Y-%m-%d"))
#[1] Date
#<0 rows> (or 0-length row.names)
MOPrice3 <- as.matrix(MOPrice1)
subset(MOPrice3,
as.Date(MOPrice3$Date,"%Y-%m-%d")==as.Date("2013-11-28","%Y-%m-%d"))
#Error in MOPrice3$Date : $ operator is invalid for atomic vectors
A.K.
On Wednesday, April 2, 2014 6:49 PM, jcrosbie <ja...@crosb.ie> wrote:
I'm getting this error: "Error in MOPrice$Date : $ operator is invalid for
atomic vectors"
The cost is: subset(MOPrice,
as.Date(MOPrice$Date,"%Y-%m-%d")==as.Date("2013-11-28","%Y-%m-%d"))
The date column looks like:
"2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31"
--
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