can't read in files

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Christoph Ruehlemann

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Jan 22, 2018, 7:46:20 AM1/22/18
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Hey all,

Something's gone wrong all of a sudden: I can't read in files into RStudio anymore. Here's the error message:

> top<-read.table("/Users/chris/Documents/R/Txt/Turn-openers.txt", header=T, quote="", sep="\t", fill=F)
Error in if (!header) rlabp <- FALSE :
  missing value where TRUE/FALSE needed
In addition: Warning messages:
1: In Ops.factor(left) : ‘!’ not meaningful for factors
2: In Ops.factor(left) : ‘!’ not meaningful for factors
3: In Ops.factor(left) : ‘!’ not meaningful for factors
4: In Ops.factor(left) : ‘!’ not meaningful for factors
5: In if (!header) rlabp <- FALSE :
  the condition has length > 1 and only the first element will be used

Stefan Th. Gries

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Jan 22, 2018, 9:28:58 AM1/22/18
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Hard to say without seeing the input file and when you say "can't read in files _into RStudio_ anymore", does that mean you CAN read that file _into R_ (R GUI)?

Best,
STG
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Stefan Th. Gries
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Univ. of California, Santa Barbara
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Susie Kim

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Jan 22, 2018, 10:59:37 AM1/22/18
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Perhaps you have a vector or any type of data previously set as "T" and therefore inducing the error with the header (i.e., "header = T")?

Alex Perrone

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Jan 22, 2018, 12:46:39 PM1/22/18
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Yeah, it looks like it can't parse "header=T", and may be thinking that T is a factor ("! not meaningful for factors), or possibly also as Susie said, a vector (condition has length > 1 and only the first element will be used). No clue why. Try:

top<-read.table("/Users/chris/Documents/R/Txt/Turn-openers.txt", header=TRUE, quote="", sep="\t", fill=F)

Also, double-check that you actually have a header -- a row of column names -- in that file. If you don't, or if the column names are screwy but the data looks ok and you delete the first line of the text file, take out the header just to see if that works:

top<-read.table("/Users/chris/Documents/R/Txt/Turn-openers.txt", header=FALSE, quote="", sep="\t", fill=F)

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Earl Brown

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Jan 23, 2018, 1:25:35 AM1/23/18
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Perhaps try a function from the readr package:
http://readr.tidyverse.org/reference/read_delim.html

Christoph Ruehlemann

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Jan 23, 2018, 2:27:26 AM1/23/18
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Thanks a lot to everybody who got on in on this with good advice.
I've resolved the issue by now (guess how: by quitting R studio and signing on again!)

I guess the error was caused by me uninstalling some java (on which, perhaps, R studio is running) and replacing it with another java without having closed R Studio.

Many thanks again
Chris

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