[R] Question about #1 zoo-faq

[Alexander Salim]

Hi all,

I have a zoo object issue. When I create a zoo object I have following error
message: "some methods for 'zoo' objects do not work if the index entries in
'order.by' are not unique."

I checked if I have some duplicates in the 'Time' column, R says yes, but
when I check the data set I can't explain why. Here is the code.

 

> sum(duplicated(dataSet1$Time))

[1] 5

> x <- which(duplicated(dataSet1$Time))

> dataSet1[x,]

                    Time fkl010z0 tre200s0 gre000z0 prestas0 rre150z0
tde200s0 ure200s0

4046 2009-03-29 02:10:00      0.5      3.0        0    942.1        0
1.9     92.7

4047 2009-03-29 02:20:00      0.3      2.7        0    942.1        0
1.7     93.4

4048 2009-03-29 02:30:00      0.6      2.8        0    942.2        0
1.8     92.9

4049 2009-03-29 02:40:00      0.4      2.8        0    942.3        0
1.6     92.0

4050 2009-03-29 02:50:00      0.8      2.8        0    942.2        0
1.6     92.1

> 

 

Enclosed is a dput file with the data set.

 

Thank you for your help.

 

Regards,

Alex