On Thu, 4 Sep 2008, Steve Murray wrote:
Dear all,
I have a tab-delimited text (.txt) file which I'm trying to read into R.
This file is of column format - there are in fact 3 columns and 259201
rows (including the column headers). I've been using the following
commands, but receive an error each time which prevents the data from
being read in:
How about telling R it is tab-delimited? Use read.delim or at least
sep="\t".
Also, see the footer to this message: we are not clairvoyant and cannot
see the file unless you show us part of it.
With a file of that size you should study the 'R Data Import/Export
Manual' and take some steps to read it in efficiently (e.g. specify
nrows and colClasses).
Jan <- read.table("JanuaryAvBurntArea.txt", header=TRUE)
Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, :
line 1 did not have 6 elements
I tried removing the 'header' argument, but receive a similar message:
Jan <- read.table("JanuaryAvBurntArea.txt")
Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, :
line 2 did not have 6 elements
What's more confusing about this is that I know that none of the lines
have 6 elements! They're not supposed to! Each row only has 3 values
(one per column)!
I suspect there is whitespace in the 'values'.
As a final resort I tried 'scan':
<- scan("JanuaryAvBurntArea.txt")
Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, :
scan() expected 'a real', got 'Latitude'
...which is obviously something to do with there being a header as the first
row, but the 'scan' command doesn't seem to have an equivalent of 'header=TRUE'
like read.table...?
If anyone is able to shed some light on why I'm receiving these errors, and how
I can get the data into R, then I'd be very grateful to hear them! I suspect
I'm doing something very basic which is wrong!
Many thanks,
Steve
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