[R] about data format in R

[Sarah Goslee]

Probably you need to use

file1 <- read.table('df', header=TRUE, stringsAsFactors=FALSE)

str(file1)

generally shows you all sorts of useful things about the file you have
just imported into R.

Sarah

On Fri, Dec 30, 2016 at 1:37 PM, lily li <chocold12 at gmail.com> wrote:
> 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.
>>>