[R] Plotting Histogram using histogram() and for loop and I want to save the histogram individually ... HELP

[David Winsemius]

It's a FAQ.

http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-do-lattice_002ftrellis-graphics-not-work_003f

--  
David.
On Nov 17, 2009, at 7:14 AM, Tal Galili wrote:

> I know how you feel,
> I came a cross the same problem once, which took sometime to find a  
> solution
> for.
>
> What you need to do is put the hist into a variable and then plot  
> it, for
> example:
>
>
>
> library(lattice)
> for(i in 8:153){
>
> hist.to.plot <- histogram(~ data[,i] | data[,2],
> data 
> = 
> data 
> ,,ylab 
> = 
> "Frequency 
> ",xlim=c(1,5),xlab="Score",ylim=c(0,100)),main=paste(colnames(data) 
> [i],sep="")
> plot(hist.to.plot)
> }
>
>
> Cheers,
> Tal
>
>
> ----------------------------------------------
>
>
> My contact information:
> Tal Galili
> E-mail: Tal.Galili at gmail.com
> Phone number: 972-52-7275845
> FaceBook: Tal Galili
> My Blogs:
> http://www.talgalili.com (Web and general, Hebrew)
> http://www.biostatistics.co.il (Statistics, Hebrew)
> http://www.r-statistics.com/ (Statistics,R, English)
>
>
>
>
> On Tue, Nov 17, 2009 at 7:09 AM, ychu066 <ychu066 at aucklanduni.ac.nz>  
> wrote:
>
>>
>> tried but still doesnt work ...
>>
>> very weird ...
>>
>> ychu066 wrote:
>>>
>>> here is the codes that i tried.....
>>>
>>>> png(paste("hist",i,".png",sep="")
>>> + library(lattice)
>>> Error: unexpected symbol in:
>>> "png(paste("hist",i,".png",sep="")
>>> library"
>>>> for(i in 8:153){
>>> + histogram(~ data[,i] | data[,2],
>>> data=data,ylab="Frequency",xlim=c(1,5),xlab="Score",ylim=c(0,100)))
>>> Error: unexpected ')' in:
>>> "for(i in 8:153){
>>> histogram(~ data[,i] | data[,2],
>>> data=data,ylab="Frequency",xlim=c(1,5),xlab="Score",ylim=c(0,100)))"
>>>> }
>>> Error: unexpected '}' in "}"
>>>> dev.off()
>>> Error in dev.off() : cannot shut down device 1 (the null device)
>>>
>>>
>>> ychu066 wrote:
>>>>
>>>> still doesnt work ...
>>>>
>>>>
>>>> Karl Ove Hufthammer wrote:
>>>>>
>>>>> On Thu, 12 Nov 2009 19:10:52 -0800 (PST) ychu066 <ychu066
>>>>> @aucklanduni.ac.nz> wrote:
>>>>>> And I also want to save each histogram in each separate pdf  
>>>>>> file using
>>>>>> the
>>>>>> following codes ?.
>>>>>> png("hist.png[i]")
>>>>>> dev.off()
>>>>>
>>>>> Try png(paste("hist",i,".png",sep="") instead.
>>>>>
>>>>> --
>>>>> Karl Ove Hufthammer
>>>>>
>>>>> ______________________________________________
>>>>> R-help at r-project.org mailing list
>>>>> 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.
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>> --
>> View this message in context:
>> http://old.nabble.com/Plotting-Histogram-using-histogram%28%29-and-for-loop-and-I-want-to-save-the-histogram-individually-...-HELP-tp26328734p26384489.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> 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.
>>
>
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>
> ______________________________________________
> R-help at r-project.org mailing list
> 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.