[R] about data format in R

[lily li]

Hi Rui,

Thanks for your reply. When I read in data using my code, the first column
ranges from 0 to 1. So when I use the code you wrote, it shows the error
message:
Error in as.POSIXct.numeric(DF$Date, format = "%m/%d/%Y-%H:%M:%S") :
'origin' must be supplied


On Fri, Dec 30, 2016 at 11:23 AM, Rui Barradas <ruipbarradas at sapo.pt> wrote:

> Hello,
>
> Have you tried
>
> df$date <- as.POSIXct(dat$date, format = "%m/%d/%Y-%H:%M:%S")
>
> ?
>
> Hope this helps,
>
> Rui Barradas
>
>
>
> Em 30-12-2016 17:40, lily li escreveu:
>
>> Hi R users,
>>
>> I'm trying to read in data, and then plot time series data. However, I
>> have
>> some problems. In my dataset, the first column represents time, and in the
>> format:
>> mm/dd/yyyy-hr:min:sec; For example, 10/01/1995-00:00:00,
>> 10/01/1995-06:00:00, etc.
>>
>> df:
>>             date                    evap     precip    intercept
>> 10/01/1995-00:00:00       1.5          2            0.2
>> 10/01/1995-12:00:00       1.7          2.2         0.1
>> 10/02/1995-00:00:00       1.5          1.8         0.3
>> ...
>>
>> My code is like this
>> file1 = read.table('df', head=T)
>>
>> When I read in data, I found that it read incorrectly. How to format when
>> read in data? Thanks.
>>
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>>
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>>
>>

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