[R] Non date value
bgunter.4567 at gmail.com
Sat Apr 15 06:24:12 CEST 2017
Show us str(DF1) . It is not a data frame.
On Fri, Apr 14, 2017 at 9:02 PM, Ashta <sewashm at gmail.com> wrote:
> Hi all,
> I am reading a field data that contains several variables. The sample
> of the data with the first two variables is shown below. I wanted to
> know the minimum and maximum recording date However, I have some
> Name Rdate V1 to V20
> Alex1 01/03/2015
> Alex2 01/03/2014
> Alex3 31/12/2012
> Alex4 15/01/2011
> Alex150 22/01/2010
> Alex151 15/02/2011
> range(DF1$Rdate, na.rm=TRUE)
> Warning message:
> In is.na(DF1$Rdate) :
> is.na() applied to non-(list or vector) of type 'NULL'
> Error in DF1$Rdate : $ operator is invalid for atomic vectors
> Execution halted
> I am expecting the Rdate field should contain recording dates. I am
> suspecting there might be a non date value in that columns. How do I
> remove that row if it is not a date format?
> Thank you.
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