Displaying 20 results from an estimated 8000 matches similar to: "Test Binary File"
2007 Jun 18
2
Large Binary file reader for Simple minds
I'm more like a caveman when it comes to programming tools. So, with that
in mind, is there a way to use readBin in a batch format to read in pieces
of a large binary file? Thank you for the consideration of my question.
Todd Remund
2010 Jan 07
2
Problem with writeBin and importing into gfortran compiled programs
Hi all,
I'm having problems trying to export binary arrays from R and importing
them into fortran (linux openSUSE 10.3 (x86_64), gfortran compiler,
fortran 90/95 program).
Let's say the problem can be expressed as:
R part
------------
>whini <- runif(1000)
>writeBin(whini,"fwhini.dat")
f90 part
------------
PROGRAM foo
INTEGER, PARAMETER :: DP = KIND(1.0D0)
INTEGER ::
2012 Apr 13
2
Can't read a binary file
Hi, I've read up on readBin() and chapter 6 in the R Data Import/Export manual, but I still can't read a binary file. Here is how the creator of the file described the code that would be needed in Fortran:
"Every record has a return in fortran. The length of each record is nx*ny*4. To read you would use the following:
nlayx = nx*ny*4
do iz=1,nz,4
read(binary file) var(1:nlayx)
2012 Feb 15
1
Using readBin to read binary "unformatted" output files from Fortran?
Hello,
I'm wondering if I can get some help with reading Fortran binary "unformatted" output files into R.
The Fortran output files were generated in Ubuntu 10.04 LTS using gfortran4.4, on a 32bit Intel Core 2 Duo 3.16 GHz machine, with little-endian and record marker lengths equal to 4.
The machine I'm currently trying to read this Fortran output file is a Macbook Pro
2009 Dec 17
1
Problem reading binaries created with fortran (More infos)
The structure of the file is clear (see below) the first line is made of
integers and doubles with the fifth being a text string followed by arrays
of double precision number.:
int1 int2 double1 double2 text int3 int4 int5
(array of double)
here is an example of file:
1 1 1.0 1.0 "HEAD" 160 224 3
23.4 34.5 ......
I tried to read the first line with readBin (results are copied below):
2012 May 03
2
Help with readBin
I'm trying to read a binary file created by a fortran code using readBin
and readChar. Everything reads fine (integers and strings) except for
double precision numbers, they are read as huge or very small number
(1E-250,...). I tried various endianness, swap, But nothing has worked so
far.
I also tried on R 64 bit for linux and windows (R 2.14) and R 2.11 on
windows XP 32 bit.
Any help would
2009 Nov 20
6
How to add a top level title to multiple plots
How can I add an overall plot title to these four plots?
I would like to have something that says, "Distribution Comparisons":
par(mfrow = c(2, 2))
# Plot 1
plot(rnorm(10),type="l",col="red")
title(main = list(paste("Normal"),
????????????????????????? col="black", cex = 1.0))
# Plot 2
plot(rpois(10,
2009 Aug 04
5
Stacked plots with common x-axis and different y-axis
Is there a place that shows how to create two plots that are stacked on top of each other where they share a common x-axis scale, but have differnt y-axis scale?
Say have the following data: airquality
Stack plot(airquality$Day, airquality$Wind) on top of plot(airquality$Day, airquality$Temp).
I am interested in stacking the two on top of each other with no seam, or plotting the two lines with
2009 Feb 12
3
Website, book, paper, etc. that shows example plots of distributions?
By any chance is any one aware of a website, book, paper, etc. or combinations of those sources that show plots of different distributions?
After reading a pretty good whitepaper I became aware of the benefit of I the benefit of doing Q-Q plots and histograms to help assess a distribution. The whitepaper is called:
"Univariate Analysis and Normality Test Using SAS, Stata, and SPSS*" ,
2009 May 18
2
readBin on binary non-blocking connections (Windows & Unix differences/bugs)
R-devel:
I am encountering a consistency issue using socketConnection and
readBin with *non-blocking* connections on Unix and Windows XP (no
Vista to test).
I am a bit confused by the behavior of *non-blocking* connections
under Windows specifically. When calling readBin on a non-blocking
connection when there is no data to read on the socket, the connection
under Unix will return a vector of
2009 Jul 09
4
Issues with file.info?
Are there any tricks associated with file.info?
I just tried it on a directory folder and it returned NA for all fields for all files. I tried it on a different folder with different files and it still returned NA.
I tried it on a specific file and it returned all the proper info correctly.
Just wondering if there are any tricks I've overlooked.
2009 Jul 16
6
Best way to replace :SS with :00
Not sure if there is an R way to do this or a regular express way, but here is what I am trying to do.
I've got lots of data where the format is HH:MM:SS, but I need to format it like HH:MM:00, i.e. round the second down to zero.
What is the best way to do this?
Thanks again.
Jason
2004 Jun 01
2
Importing binary data
Hi everybody!
I've a large dataset, about 2 Mio entries of the format which I would like
to import into a frame:
<integer><integer><float><string><float><string><string>
Because to the huge data amount I've choosen a binary format instead
of a text format when exporting from Matlab.
My import function is attached below. It works fine for only
2009 Feb 04
5
Target Plot?
I've done a little snooping around the R Gallery Site (http://addictedtor.free.fr/graphiques/) and the "Statistics with R" site (http://zoonek2.free.fr/UNIX/48_R/all.html), but I can't seem to find what I'm looking for.
Here is the type of plot I would like to draw:
(1) 2-D three axis plot where each axis is separated by 120-degrees (would be great if the number of axis
2009 Jan 03
2
R Stacked Histogram
I've seen this asked, but never fully answered.
Is it possible to plot stacked histograms in R?
I have four data sets that I would like to show combined vertically in histogram format.
Is this possible?
Thank you for any feedback you can provide.
P.S. I know I can show the four sets side by side, but I want to combine them, but still uniquely identify each. Thanks again.
2006 Nov 07
1
reading VERY large binary files
Hello,
I am trying to read in elements out of a very large binary file ... the
total file is 4 gigs. I want to select rows out of the file, and the
current procedure I run works but is prohibitively slow (takes more than
a day to run and still won't complete). Is there any faster way to
accomplish this?
My current procedure looks like this:
readHH <- function(file_name,
2009 Jul 09
5
Best way to export values from a function?
Maybe there is a great website out there or white paper that discusses this but again my Google skills (or lack there of) let me down.
I would like to know the best way to export several doubles from a function, where the doubles are not an array.
Here is a contrived function similar to my needs:
multipleoutput<-function(x)
{
squared<-x^2
cubed<-x^3
exponentioal<-exp(x)
2009 May 26
2
Problem accessing "row number" from subset on a dataframe
I would like to use the "row number" information returned from performing a subset command on a dataframe.
For example, I would like to automatically delete some rows from a dataframe if they match a criteria. Here is my example below.
data(airquality)
names(airquality)
subset(airquality, airquality$Month == 6)
Now how do I delete the row numbers returned automatically?
I
2009 Jun 26
3
Automatically placing a legend in an area with the most white space...
At one point I believe I heard of an R package that would automatically find the most empty space in a plot, and then that answer could then be used to intelligently place a legend.
I would like to try to apply that R package to the contrived example shown below, so thank you for any hints or tips that can be provided.
x = seq(0, 1000, by = 1)
y1_vals<-rnorm(1000, mean = 0, sd = 50)
2008 Aug 22
2
How I can read the binary file with "different type"?
Hi all,
I have a binary file which have 8*100 bytes. The structure of the file is
as follows: every eigth bytes represent 2 data:the first four bytes is the
little-endian for integer, the next four bytes is the little-endian for
floating32. The structure of the following bytes is as the same as the first
eight bytes'.
As the function readBin only read the binary file with one structure