Hello.
I don't uderstant when to use textConnection and when not.
Some examples do it, some not.
I've even seen something like
con - textConnection(rev(rev(ReadLines('data.txt'))[-(1:2]))
data - read.table(con)
close(con)
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Hi,
One useful case is when data is sent in an email. For instance:
T1 T2 T3
-0.24 -0.26 -0.67
-1.58 0.04 0.14
-1.21 1.55 -0.45
0.31 0.48 -1.39
One could read it in via
con - textConnection(
T1 T2 T3
-0.24 -0.26 -0.67
-1.58 0.04 0.14
-1.21 1.55 -0.45
0.31 0.48 -1.39)
Also, many R functions are designed to operate on R connections, to
input and output text. Alternatively, we may wish to provide the input
text as an R character vector, or output text to a character vector. The
textConnection makes a character vector look like a connection, so R
routines that
OK, thanks
Some time ago I asked in the forum how to read data from a file in order to
use it with zoo.
Someone suggested to use textConnection
That's why I'm a little bit confused.
I guess I don't need to use textConnection in order to read from files, it's
just for text copied from other
On Mon, Aug 16, 2010 at 1:40 PM, skan juanp...@gmail.com wrote:
OK, thanks
Some time ago I asked in the forum how to read data from a file in order to
use it with zoo.
Someone suggested to use textConnection
That's why I'm a little bit confused.
I guess I don't need to use textConnection
Gabor Grothendieck wrote:
Note that zoo does have the read.zoo function which can read a file
returning a zoo object. See help(read.zoo) .
I know, but there are many different ways to read and I wanted to know
what's the proper in my case.
For example I've seen these ones, what's
I've just seen that sep sep cannot be , because there are not commas in
the file.
but I want it to take the first and second columns (date and time) as a
whole, the index.
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On Mon, Aug 16, 2010 at 8:00 PM, skan juanp...@gmail.com wrote:
I've just seen that sep sep cannot be , because there are not commas in
the file.
but I want it to take the first and second columns (date and time) as a
whole, the index.
In the latest version of zoo index.column= can be a
Error in .subset(x, j) : invalid subscript type 'list'
Maybe is because I'm using Revolution Analytics and is based on an older
version of R.
I use it because I need to manage very big files and the common version of R
shows me an out of memory error.
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On Mon, Aug 16, 2010 at 8:36 PM, skan juanp...@gmail.com wrote:
Error in .subset(x, j) : invalid subscript type 'list'
Maybe is because I'm using Revolution Analytics and is based on an older
version of R.
I use it because I need to manage very big files and the common version of R
shows
Oh, I got it with these code:
tmp - read.table(file.txt)
mydata - zoo(z$V3, as.chron(paste(z$V1,z$V2)))
but that way I cannot specify the format of the date
cheers
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On Mon, Aug 16, 2010 at 8:50 PM, skan juanp...@gmail.com wrote:
Oh, I got it with these code:
tmp - read.table(file.txt)
mydata - zoo(z$V3, as.chron(paste(z$V1,z$V2)))
but that way I cannot specify the format of the date
The default method of as.chron has a format= argument which uses the
On Mon, Aug 16, 2010 at 8:07 PM, Gabor Grothendieck
ggrothendi...@gmail.com wrote:
On Mon, Aug 16, 2010 at 8:00 PM, skan juanp...@gmail.com wrote:
I've just seen that sep sep cannot be , because there are not commas in
the file.
but I want it to take the first and second columns (date and
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