[R] Help on Histogram ~ Barplot

[Bert Gunter]

Unless I have missed something somewhere, the object is named "graph" not
"RData" . Further, the call to by() is complete nonsense, with arguments
misspecified -- there is no "names.arg" argument to by() (the 2nd argument
is named "INDICES")

It appears that some people need to spend some time with R tutorials before
further posting (or replying) on this list.

Cheers,
Bert

graph<- read.csv("RData.csv", header = TRUE)

On Thu, May 28, 2015 at 7:08 AM, Kristina Wolf <kmwolf at ucdavis.edu> wrote:

> I don't know why that doesn't work, but try adding in
> sep=","
> In your read.csv()
>
> That shouldn't matter as to whether or not it recognizes your object
> though, but it will matter in how your object is read.
>
> Other simple things might be to make sure the file is saved and then close
> it out to make sure there is no open dialog box preventing the save from
> occurring. Then run the read.csv again and see if the object shows up in R.
>
>
>
> ~ Kristina
>
> Kristina Wolf
> PhD Candidate, Graduate Group in Ecology
> M.S. Soil Science, B.S. Animal Science
> KristinaMWolf.com
> Restoration Ecology Lab
> Department of Plant Sciences
> University of California, Davis
> (530) 750-9771
>
> > On May 28, 2015, at 6:13 AM, Shivi82 <shivibhatia at ymail.com> wrote:
> >
> > HI David,
> >
> > So if I understand from your post below, when we import a file in R- we
> need
> > to make sure that the variable names do not have any space nor they
> should
> > be in special characters or not in comma format.
> > Please correct me I am wrong.
> >
> > Now I have changed the file to a new file as RData.csv file and now when
> I
> > use the below code it gives me an error
> > graph<- read.csv("RData.csv", header = TRUE)
> > MonthlyWeight<-by(RData$Weight,names.arg = RData$Month,sum)
> >
> > The error is : Error in by(RData$Weight, names.arg = RData$Month, sum) :
> >  object 'RData' not found. Whereas I checked using "getwd()" this file is
> > saved in the working directory.
> > Please suggest.
> >
> >
> >
> > --
> > View this message in context:
> http://r.789695.n4.nabble.com/Help-on-Histogram-Barplot-tp4707739p4707839.html
> > Sent from the R help mailing list archive at Nabble.com.
> >
> > ______________________________________________
> > R-help at 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 at 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.
>

	[[alternative HTML version deleted]]