[R] Deletion of rows

[PIKAL Petr]

Hi

No attachments allowed (mostly). Use ?dput and copy to email directly.

How you can have more than 29 rows in February if each row is one day?

I believe that merging your data with date column made by ?seq.POSIXt can remove any nonexistent row but it all depends on how your data are structured and what do you want to remove.

Petr


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of dila radi
> Sent: Tuesday, March 11, 2014 6:04 AM
> To: r-help at r-project.org
> Subject: [R] Deletion of rows
>
> Hi,
>
> I would like to ask about the deletion of rows in the data.
>
> Assuming I have this kind of data set, which you can refer through the
> attachment.
>
>
> As in the attachment, I have 31 days for each month which is I want to
> delete some of the rows according to the real days per month.
>
> For example:
>
>  Jan, March, May, July, Aug, Oct, Dec (these months have 31 days per
> month, so no deletion of rows needed)
>
> Feb (28 days except for leap years), Apr, June, Sept, Nov (we have 30
> days per month)
>
> so, for any month that is not 31 days, I want to delete the row
> accordingly.
>
> The question is, I have data sets from year 1970-2013, and to delete
> manually it would be time consuming, so how do I delete those rows
> according to the
>
>                              1) month itself
>                               2) leap years ( year that is categorized
> as
> leap year, should
> have
> 29 days in Feb)
>
> Hope you can help me. Thanks a lot.
>
> Regards,
> Dila

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