Displaying 20 results from an estimated 9000 matches similar to: "reading a dense file of binary number"
2010 Aug 12
2
drawing dot plots with size, shape affecting dot characteristics
Hi all,
I'm interested in doing a dot plot where *both* the size and color (more
specifically, shade of grey) change with the associated value.
I've found examples online for ggplot2 where you can scale the size of the
dot with a value:
http://had.co.nz/ggplot2/graphics/6a053f23cf5bdfe5155ab53d345a5e0b.png
Or scale the color with the value:
2011 Feb 25
2
BFGS versus L-BFGS-B
Hi all,
I'm trying to figure out the effective differences between BFGS and L-BFGS-B
are, besides the obvious that L-BFGS-B should be using a lot less memory,
and the user can provide box constraints.
1) Why would you ever want to use BFGS, if L-BFGS-B does the same thing but
use less memory?
2) If i'm optimizing with respect to a variable x that must be non-negative,
a common approach
2010 Jul 08
1
glmnet - choosing the number of features
Hi,
I am trying to use the glmnet package to do some simple feature selection.
However, I would ideally like to be able to specify the number of features
to return (the glmnet package, as far as I can tell, only allows
specification of a regularization parameter, lambda, that in turn returns a
model with a specific number of non-zero features).
Is there a straightforward way of calculating the
2008 Feb 26
3
Reading a file created with Fortran
Colleagues,
I am trying to read a file written by Fortran. Several lines of the
file are pasted below:
101 06e+050280.9777.484208.18147.20.246350.4020.7308717.882600 1 1
101 0.5 00280.9777.484208.18147.20.246350.4020.7308717.882600 0 0
101 1 00280.9777.484208.18147.20.246350.4020.7308717.882600 0 0
101 1.5 00280.9777.484208.18147.20.246350.4020.7308717.882600 0 0
101 2
2010 Jun 05
1
Write.fwf works from Mac, throws different number of row error in Windows
Hello,
I am having a problem with write.fwf in Windows. I wrote a code to ingest a
number of text files with weather data in them, process them, and then
output a text file with two parts: 1) a set of column names, 2) the
processed data table.
I wrote and tested the program on my Mac, and it worked fine. However, on
the windows machine, where I intend the work to be done, when I run the
2010 Aug 12
1
reading fixed width format data with 2 types of lines
Hi,
I know how to read fixed width format data with read.fwf, but suddenly I need to read in a large number of old fwf files with 2 types of lines. Lines that begin with "3" in first column carry one set of variables, and lines that begin with "4" carry another set, like this:
?
3A00206546L070049016090045 99 1015002 001001008010004002004007003 001
2010 Dec 13
1
ggplot2 errorbarh
Hi,
I'm having problems using the 'width' aesthetic attribute for the
geom_errorbarh. This is the same problem reported earlier here, but I'll
try to write the problem more clearly:
http://www.mail-archive.com/r-help@r-project.org/msg62371.html
The problem I'm having is that, the 'width' attribute is supposed to set the
height of the endpoints of the whiskers, and
2012 Sep 14
1
Any way to get read.table.ffdf() (in the ff package) to pass colClasses or comment.char parameters through to read.fwf() ?
Hi everyone, my apologies if I'm overlooking something obvious in the
documentation. I'm relatively inexperienced with the (awesome) ff package.
My goal is to use the read.table.ffdf() function to call the read.fwf()
function and pass through the colClasses and comment.char arguments. The
code below shows exactly what doesn't work for me.
If the colClasses and comment.char
2012 Mar 10
2
Reading text files from other languages
I'm trying to read a data file that contains characters from the Spanish
language:
> Station <- read.fwf("LosDatos.txt",widths=c(7,7,25,8,8,5),header=FALSE,
+ skip=3,n=separ[1]-4)
Then the R interpreter issues the following message:
Error en substring(x, first, last) :
invalid multibyte string at '<d1>A, S.'
Calls: read.fwf ->
2004 Nov 08
1
Possible bug in read.fwf (PR#7350)
Full_Name: Shigeru Mase
Version: R 1.9.1 and 2.0.0
OS: Debian Linux
Submission from: (NULL) (219.35.150.115)
I tried to read the following text file "test.txt" with 5 lines using
read.fwf() function:
# comment 1
1234567 # comment 2
1 234567 # comment 3
12345 67 # comment 4
# comment 5
In R 1.9.1, I got the following result (since I have R 2.0.0 installed now
I cannot reproduce
2004 Jul 10
1
read.table, read.fwf, and na.strings (PR#7075)
# Your mailer is set to "none" (default on Windows),
# hence we cannot send the bug report directly from R.
# Please copy the bug report (after finishing it) to
# your favorite email program and send it to
#
# r-bugs@r-project.org
#
######################################################
Is this intended behavior for the read.fwf(na.strings="-999")?
I anticipated that
2005 Aug 10
1
Reading a repeated fixed format
The Harwell-Boeing format for exchanging matrices is one of those
lovely legacy formats that is based on fixed-format Fortran
specifications and 80 character records. (Those of you who don't know
why they would be 80 characters instead of, say, 60 or 100 can ask one
of us old-timers some day and we'll tell you long, boring stories
about working with punched cards.)
Reading this format
2009 May 09
5
Reading large files quickly
I'm finding that readLines() and read.fwf() take nearly two hours to
work through a 3.5 GB file, even when reading in large (100 MB) chunks.
The unix command wc by contrast processes the same file in three
minutes. Is there a faster way to read files in R?
Thanks!
2005 Oct 21
1
read.fwf(...,header=TRUE,...) (PR#8236)
Full_Name: Giovanni Bonafe'
Version: 2.2.0
OS: Linux
Submission from: (NULL) (195.62.164.225)
If the file "example.dat" is like this:
aaa bbb ccc
3.4 1.2 5.6
4.6 10 32
667 343 1.7
With the older 1.9.1, as expected:
> data<-read.fwf(file = "example.dat",widths=c(3,4,4),header=TRUE)
> data
aaa bbb ccc
1 3.4 1.2 5.6
2 4.6 10.0 32.0
3 667.0 343.0
2009 Apr 14
2
Controlling widths in write.fwf()
Is there a way to handle the widths of values being written to a file
using wrtite.fwf() ?
For example, I used read.fwf(file, width.vector) to read a file. After
making the necessary data manipulation, I want to write the data to a
new file in the same width.vector format. Is there a way to specify
this?
Thanks in Advance
Aparna
[[alternative HTML version deleted]]
2005 Oct 20
4
read.fwf doesn't work with header = TRUE (PR#8226)
Full_Name: Emmanuel Paradis
Version: 2.1.1
OS: Linux
Submission from: (NULL) (193.49.41.105)
read.fwf(..., header = TRUE) does not work properly since:
1/ the original header is printed on the console and not in FILE;
2/ the different 'parts' of the header should be separated with tabs
to work with the call to read.table.
Here is a suggested fix for src/library/utils/R/read.fwf.R:
2002 Jun 13
1
problem with read.fwf
Here is an example of the data I'm reading in using read.fwf:
5342.0 5450.4 0.9200 0.4506 34.7030 27.8411 37.1306 46.0034 0.0000
5438.0 5549.6 0.9300 0.4477-34.7280 27.8616 37.1506 46.0234 0.0000
And the commands I'm using to read it in:
widths <- c(7,7,8,8,8,8,8,8,8)
filedata <- read.fwf(fileopen, widths,sep="",dec=".")
The problem is with
2002 Dec 12
1
Read FWF, problem and solution?
Running R 1.6.1
Linux Slackware 8.1
233MHZ AMD-K6 96MB RAM
Using read.fwf, I tried to open a fixed-width file that of about 4 MB residing
in the working directory, using the command below:
dat<-read.fwf("sc01aai.dat", widths=fields$length)
where fields$lengths is a vector of column widths, 28 to be exact. The data
are a mix of character, text, and factor variables.
R started
2012 Mar 10
1
Subsetting a data.frame -> Read in with FWF format from .DAT file
Hi there,
I am having trouble subsetting a data frame by a conditional via one column
(of many).
I read the file into R through "read.fwf," where I specified column widths.
Original data is .DAT. I then utilized "names" function to read in column
headings.
For one column, PRVDR_NUM, I wish to further amend the entire data set, but
only have PRVDR_NUM == 050108. This is
2006 Oct 30
4
read.fwf and header
Hi!
I have data (also in attached file) in the following form:
num1 num2 num3 int1 fac1 fac2 cha1 cha2 Date POSIXt
1 1 f q 1900-01-01 1900-01-01 01:01:01
2 1.0 1316666.5 2 a g r z 1900-01-01 01:01:01
3 1.5 1188830.5 3 b h s y 1900-01-01 1900-01-01 01:01:01
4 2.0 1271846.3 4 c i t x 1900-01-01 1900-01-01 01:01:01
5 2.5 829737.4 d j u w 1900-01-01
6 3.0