Displaying 20 results from an estimated 2000 matches similar to: "Importing binary data"
2006 Oct 21
2
Possible bugs in 'seek' and 'readBin'
I found that
seek(..., origin = 'current', ...)
and
readBin(..., what = 'integer', ...)
or 'int'
do not work correctly.
Did anyone have the same experience?
2004 Jan 11
3
newbie question on contrasts and aov
I try to move from SPSS to R/S and am trying to reproduce the results of SPSS
in R. I calculated a one-way anova with "spk" as experimental factor and erp
as depended variable.
The result of the Anova are the same concearning the mean square, F and p
values. But I also wanted to caculate the contr.sdif(4) contrast on spk. The
results are completely different now. I hope anybody can
2006 Apr 27
1
Error in readChar(): invalid UTF-8 input
I have R code to read a binary header file, consisting of several
readBin() and readChar() statements. I am currently using version R-2.2.1
(on x86_64, RH EL4) and have received the following error
Error in readChar(fid, n = 1) : invalid UTF-8 input in readChar()
This is strange because (a) I was able to read in this file successfully
in previous versions of R (circa 2005) and (b) it
2006 May 12
1
DICOM package wont read my DICOM files
Hello there!
I hope there is someone out there who is using the DICOM package.
When Im trying to read my a DICOM file (MRI-data) I always get this
error:
> dicom.info("~/myfile")
Error in readBin(fid, integer(), length, size = 1) :
invalid value of 'n'
The DICOM files that come with the DICOM package work just fine.
I already tried both endian options.
I can view my
2004 Mar 13
1
Error in "names<-.default"(`*tmp*`, value = nmstrata) :
Hi,
I have a problem with aov(). I used it many times, but now I have new data,
tried to use it in the same way. I get I strange Error message that i can't
understand (see below). I guess it is caused by incompatible data types. The
dataframe also looks ok to me.
I use:
spk
2008 Aug 12
1
Powernow Failure with Xen Kernel
Sorry to have so many questions but I seem to have quite a few mini
problems with my first Xen setup. My xen server works fine with Powernow
on the standard Kernel but with the Xen kernel it fails. Does anyone
know why? Details below.
With Standard Kernel
powernow-k8: Found 2 Quad-Core AMD Opteron(tm) Processor 8350 processors
(8 cpu cores) (version 2.20.00)
powernow-k8: 0 : fid 0x0
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
2006 Jun 28
2
read file with readBin (the file was saved with a C-routine)
Hello!
I have problems with using of "readBin" to read files, which was written in C with "fwrite". In the C-File there is the following Code:
fwrite(MyitINI,sizeof(itINItype),1,outfile);
where MyitINI is a structure of the following form
typedef struct{
int KernelFileSave; /* Determined, if Systemmatrix saved or not.*/
char KernelFileName[200]; /* A-Matrix name
2011 Jan 28
3
any similiar R fuction for matlab function 'fprintf'?
Dear All,
Currently, I am translating Matlab code to R. I met difficulties to translate such Matlab codes into R:
fprintf(fid,(' SPLITTING RESULTS '));
fprintf(fid,(' \n'));
fprintf(fid,' Data base to analyze is a matrix %4i x %2i ',[n m]);
fprintf(fid,' \n');
fprintf(fid,' h is %2i',h);
fprintf(fid,' \n');
fprintf(fid,' group=0
2008 Jul 11
3
data summerization etc...
Hello,
I am trying to do some fairly straightforward data summarization, i.e., the
kind you would do with a pivot table in excel or by using SQL queires. I
have a moderately sized data set of ~70,000 records and I am trying to
compute some group averages and sum values within groups. the code example
below shows how I am trying to go about doing this
pti <-rnorm(70000,10)
fid <-
2005 May 13
3
Poor volume on SPA-2100 due to asterisk?
I just bough a Sipura SPA-2100 to use with Asterisk. When I use the
analog handset plugged into the SPA-2100, the person on the other end
can hardly hear me.
I check the SPA-2100 setup and their is no mic/spk gain control. Is
this a problem with the SPA-2100 or with Asterisk? Any way for asterisk
to compensate for the poor audio level (if the problem is the SPA-2100)?
Thanks,
Mike
2008 Jul 11
1
data summarization etc...
Hello,
I am trying to do some fairly straightforward data summarization, i.e., the
kind you would do with a pivot table in excel or by using SQL queires. I
have a moderately sized data set of ~70,000 records and I am trying to
compute some group averages and sum values within groups. the code example
below shows how I am trying to go about doing this
pti <-rnorm(70000,10)
fid <-
2011 Mar 04
2
Fixing the HDF5 package: the on.exit mystery
Dear all,
I'm trying to fix a subtle bug in the hdf5 package. This package provides an
interfaces to the HDF5 library and hence allows one to load data into R from
files in the HDF5 format. The bug appeared during a period in which R changed
but the package did not.
I include below both the R and C code, stripped of everything except what is
needed to show the bug. What is supposed to
2007 Jan 26
1
readBin is much slower for raw input than for a file
Dear all,
I'm trying to write an efficient binary file reader for a file type
that is made up of several fields of variable length, and so requires
many small reads. Doing this on the file directly using a sequence of
readBin() calls is a bit too slow for my needs, so I tried buffering
the file into a raw vector and reading from that ("loc" is the
equivalent of the file pointer):
2007 Jan 26
1
readBin is much slower for raw input than for a file
Dear all,
I'm trying to write an efficient binary file reader for a file type
that is made up of several fields of variable length, and so requires
many small reads. Doing this on the file directly using a sequence of
readBin() calls is a bit too slow for my needs, so I tried buffering
the file into a raw vector and reading from that ("loc" is the
equivalent of the file pointer):
2019 Nov 18
2
readBin should check that its endian argument is a legal value
I think it would be helpful if readBin checked that its endian argument is
a legal value.
Why? I was reviewing some of our code and noticed that the author had
readBin(..., endian="network") and never having heard of "network", I
looked at the man page for readBin, and it hadn't heard of "network"
either. Not good.
I then looked at the R code for readBin, which
2013 May 08
1
getting corrupted data when using readBin() after seek() on a gzfile connection
Hi,
I'm running into more issues when reading data from a gzfile connection.
If I read the data sequentially with successive calls to readBin(), the
data I get looks ok. But if I call seek() between the successive calls
to readBin(), I get corrupted data.
Here is a (hopefully) reproducible example. See my sessionInfo() at the
end (I'm not on Windows, where, according to the man page,
2012 Dec 13
2
How to select a subset data to do a barplot in ggplot2
Hi,everybody
I have a dataframe like this
FID IID STATUS
1 4621 live
1 4628 dead
2 4631 live
2 4632 live
2 4633 live
2 4634 live
6 4675 live
6 4679 dead
10 4716 dead
10 4719 live
10 4721 dead
11 4726 live
11 4728 nosperm
11 4730 nosperm
12 4732 live
17 4783 live
17 4783 live
17 4784 live
2002 Mar 05
3
reading 2-byte integers using readBin and connections
Hi folks:
This may be a stupid question, but I cannot seem to find a way to tell
readBin that I want to read 2-byte integers from the connection. The input
file is 150,720 bytes long containing 75,360 short (2-byte) integers. But
specifying "integer" or "int" for what in readBin only returns me a vector
of length 37680, leading me to believe that sizeof(integer) or
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,