[R] about data problem

[Greg Snow]

This indicates that your Discharge column has been stored/converted as
a factor (run str(df) to verify and check other columns).  This
usually happens when functions like read.table are left to try to
figure out what each column is and it finds something in that column
that cannot be converted to a number (possibly an oh instead of a
zero, an el instead of a one, or just a letter or punctuation mark
accidentally in the file).  You can either find the error in your
original data, fix it, and reread the data, or specify that the column
should be numeric using the colClasses argument to read.table or other
function.



On Tue, Sep 20, 2016 at 3:46 PM, lily li <chocold12 at gmail.com> wrote:
> Hi R users,
>
> I have a problem in reading data.
> For example, part of my dataframe is like this:
>
> df
> month day year          Discharge
>    3        1   2010                6.4
>    3        2   2010               7.58
>    3        3   2010               6.82
>    3        4   2010               8.63
>    3        5   2010               8.16
>    3        6   2010               7.58
>
> Then if I type summary(df), why it converts the discharge data to levels? I
> also met the same problem when reading some other csv files. How to solve
> this problem? Thanks.
>
> Discharge
> 7.58     :2
> 6.4       :1
> 6.82     :1
> 8.63     :1
> 8.16     :1
>
>         [[alternative HTML version deleted]]
>
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-- 
Gregory (Greg) L. Snow Ph.D.
538280 at gmail.com