On Jul 11, 2013, at 13:50 , Dante.py wrote:
> Maybe you should set parameter "as.is" in read.csv to be false.
TRUE more likely... However, there's another issue: files[i,] is a data frame,
therefore so is f[1] (a telltale sign is that it has rows and column labels).
So f[[1]] is probably needed.
>
>
> 2013/7/11 Jannetta Steyn <janne...@henning.org>
>
>> Hi Folks
>>
>> I can't see what I have done wrong in this piece of code.
>>
>> # Read filenames from csv file
>> files <- read.csv(file="files.csv",head=FALSE,sep=",")
>>
>> # for each filename read the file
>> for (i in 1:length(files)) {
>> # f becomes the next row inthe file
>> f<-files[i,]
>> # the header to be used for the graph is in column 2 of f
>> head=f[2]
>> par(mfrow=c(4,2))
>> # the filename to be used is in column 1 of f
>> con<-read.csv(file=f[1], header=TRUE, sep=',')
>> tmp<-con$value2
>> data<-normalize_js(tmp,-1,1)
>> time<-con$time
>> # run the waveform analyser
>> waveformanalyser(data,time,head)
>> }
>>
>> I get an error:
>> Error in read.table(file = file, header = header, sep = sep, quote = quote,
>> :
>> 'file' must be a character string or connection
>>
>> When the error occurs f equals:
>>> f
>> V1 V2
>> 1 ANA110915004A_3PERIOD_TmAvg-rdata.csv Pre-DA
>>
>> and f[1] equals:
>>
>>> f[1]
>> V1
>> 1 ANA110915004A_3PERIOD_TmAvg-rdata.csv
>>
>>
>> Why won't it use the value of f[1] as a string for the file parameter in
>> the read.csv line?
>>
>> All help would be apprecitated.
>> Regards
>> Jannetta
>>
>>
>>
>> --
>>
>> ===================================
>> Web site: http://www.jannetta.com
>> Email: janne...@henning.org
>> ===================================
>>
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>>
>
>
>
> --
> ÕÅêÊ Dante.py
> Ö‹É∏´óѧ09π¶Ê‡Ñ§ÓëÓœÓÃʇѧ◊¨Òµ
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Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
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Email: pd....@cbs.dk Priv: pda...@gmail.com
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