Please reply to all so the answers are seen on the mailing list, where my
mistakes can be corrected and others can learn from any valid answers I manage
to provide.
I warned you that df is the name of a common function. I used the name of the
variable that you referred to in your question, which had hidden the common
function called df. I would guess that you have not re-created the variables in
R as you had them defined before.
To keep your mind clear on what R is thinking, learn to use the ls and str
functions. Read about them using the help system:
?ls
?str
I think that
str(df)
tells you that df is a function, rather than a data.frame. If you create a
variable called df like so:
df <- data.frame( test=5 )
or using any other function that gives you a data frame such as read.csv, then
the df function in the base stats package will be hidden and
str(df)
will give you a different result.
---------------------------------------------------------------------------
Jeff Newmiller The ..... ..... Go Live...
DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go...
Live: OO#.. Dead: OO#.. Playing
Research Engineer (Solar/Batteries O.O#. #.O#. with
/Software/Embedded Controllers) .OO#. .OO#. rocks...1k
---------------------------------------------------------------------------
Sent from my phone. Please excuse my brevity.
On October 18, 2015 11:29:51 AM PDT, Jonathan Reardon
<jonathanrear...@outlook.com> wrote:
>How do i send an email in plain text format and not HTML?
>I tried:
>idx <- is.na( df$mean )
>df[ idx, "mean" ] <- df[ idx, "offset" ]
>I got the error message:
>In is.na(df$mean) : is.na() applied to non-(list or vector) of type
>'NULL'
>Jon
>
>> Subject: Re: [R] Replace NaN with value from the same row
>> From: jdnew...@dcn.davis.ca.us
>> Date: Sun, 18 Oct 2015 11:06:44 -0700
>> To: jonathanrear...@outlook.com; r-help@r-project.org
>>
>> Next time send your email using plain text format rather than HTML so
>we see what you saw.
>>
>> Try
>>
>> idx <- is.na( df$mean )
>> df[ idx, "mean" ] <- df[ idx, "offset" ]
>>
>> BTW there is a commonly-used function called df, so you might improve
>clarity by using DF for your temporary data frame name.
>>
>---------------------------------------------------------------------------
>> Jeff Newmiller The ..... ..... Go
>Live...
>> DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live
>Go...
>> Live: OO#.. Dead: OO#..
>Playing
>> Research Engineer (Solar/Batteries O.O#. #.O#. with
>> /Software/Embedded Controllers) .OO#. .OO#.
>rocks...1k
>>
>---------------------------------------------------------------------------
>
>> Sent from my phone. Please excuse my brevity.
>>
>> On October 18, 2015 10:48:14 AM PDT, Jonathan Reardon
><jonathanrear...@outlook.com> wrote:
>> >Hi everyone,
>> >A simple question, but i cannot figure this out.
>> >
>> >I have a data-frame with 4 columns (onset, offset, outcome, mean):
>> >onset offset outcome mean8 72071 72503 1 7244615 142598
>> >143030 1 NaN30 293729 294161 1 294080
>> >For each 'NaN' in the mean column, i want to replace that NaN with
>the
>> >'offset' value in the same row.
>> >Intended outcome:
>> >onset offset outcome mean8 72071 72503 1 7244615 142598
>> >143030 1 14303030 293729 294161 1 294080
>> >I have tried:
>> > df$mean <- replace(df$mean, is.na(df$mean), df$offset)
>> >but i get the error message: 'number of items to replace is not a
>> >multiple of replacement length'. I'm assuming because this is trying
>to
>> >insert the whole 'offset' column into my one NaN cell. Is this a
>> >correct interpretation of the error message?
>> >Can anyone tell me how to replace any mean row NaN's with the
>offset
>> >value from that very same row?
>> >I don't want to use any pasting etc as this needs to be used as part
>of
>> >a function working over a large dataset than the one shown here.
>> >Cheers
>> >Jonathan
>> > [[alternative HTML version deleted]]
>> >
>> >______________________________________________
>> >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> >https://stat.ethz.ch/mailman/listinfo/r-help
>> >PLEASE do read the posting guide
>> >http://www.R-project.org/posting-guide.html
>> >and provide commented, minimal, self-contained, reproducible code.
>>
>
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
