Displaying 20 results from an estimated 10000 matches similar to: "Reading images ..."
1999 Mar 18
2
e1071 and netpbm
Having compiled and successfully installed e1071 on a previous machine
(and run under 0.62.4) I want to compile it on a new machine to run under
0.63.3 but the loader can't find netpbm - both machined are RH5.2 Linux
installations.
I have some quite old netpbm's on a CD but none more recent and I
certainly didn't install them on my old machine. I can't locate or rpm -q
or rpm
1999 Mar 18
2
e1071 and netpbm
Having compiled and successfully installed e1071 on a previous machine
(and run under 0.62.4) I want to compile it on a new machine to run under
0.63.3 but the loader can't find netpbm - both machined are RH5.2 Linux
installations.
I have some quite old netpbm's on a CD but none more recent and I
certainly didn't install them on my old machine. I can't locate or rpm -q
or rpm
2001 Nov 19
2
reading tiff files
Dear all,
I am looking for a way to read tiff data into R (this could be something
the pixmap package users could find intersting).
I could not find anything related but I suspect something to
exists...somewhere... is it really the case ?
Thanking in advancing for help/pointers,
Laurent
--
Laurent Gautier CBS, Building 208, DTU
PhD. Student D-2800 Lyngby,Denmark
tel: +45 45 25
1998 Nov 13
3
SuSE package
Hi
Is there a SuSE binary package for R 0.64?
John
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2007 Jun 07
2
reading BMP or TIFF files
I realize that this question has been asked before (2003);
From: Yi-Xiong Zhou
Date: Sat 22 Nov 2003 - 10:57:35 EST
but I am hoping that the answer has changed. Namely, I would
rather read the BMP (or TIFF) files directly instead of putting
them though a separate utility for conversion as suggested by,
From: Prof Brian Ripley
Date: Sat 22 Nov 2003 - 15:23:33 EST
"Even easier is
1999 Mar 11
3
R and kron
I note that the CRAN at .at land still refers to 0.63.2. Is this just a
typo? I don't want to download a whole lot only to find I still have it!
Does 0.63.3 live elsewhere?
And I note the new function kronecker - very useful but can it be applied
to non-numerics as in factors, data frames etc preserving the class,
levels and names?
John
1999 Mar 11
3
R and kron
I note that the CRAN at .at land still refers to 0.63.2. Is this just a
typo? I don't want to download a whole lot only to find I still have it!
Does 0.63.3 live elsewhere?
And I note the new function kronecker - very useful but can it be applied
to non-numerics as in factors, data frames etc preserving the class,
levels and names?
John
2001 Aug 29
2
Missing functions in package e1071(Win*)
Hi!
After unziping the CRAN file e1071.zip
on my Win95 library directory, I start R and
type
>library(e1071)
After that, help commands of the e1071
functions work (i.e., help(read.pnm), BUT
some functions themselves are not available:
> read.pnm
Error: Object "read.pnm" not found
I've looked at the file library/R/e1071 with
an ascii editor and it seems like the functions
1999 Apr 06
2
Funny warning message
Hi
Sometimes (and I haven't yet found out what causes it) I get a message:
Warning: ingnored non-function "t"
I think it may be either when I have done a Ctl-C to break in or I may
have inadvertently named a variable after one of the many system or other
functions. I have seen names other than "t".
Anyway, the only way I can get rid of it is to exit and restart. I
1999 Nov 11
2
Display Pictures in R
Hi,
how can I import pictures in R (e.g. bmp or tiff) and display them in an X11?
Thanks
Sigurd
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2009 Jun 15
1
display SVG, PNG, GIF, JPEG, TIFF, PPM in new plot frame
Dear R-help
I want to display an image file in a new plot frame.
SVG is my preferred format, but I can also consider
PNG, GIF, JPEG, TIFF, and PPM (from ImageMagick).
By way of background (although not material to this
posting), the image file is generated by a call to
'dot' (part of the 'Graphviz' suite) after the required
.dot file has been produced using hand-crafted R code.
2006 Mar 09
1
count pixels of same color in pixmap object?
Dear all,
I try to figure out how to use R to count the number of pixels of the
same color in some gray-level picture. I managed to read it in either
tiff or jpeg format, but the returned pixmap object keeps its
information out of (my) reach. Is there an easy way to tabulate the
different color/graylevel pixels and their numbers? Or should I use a
completely different (free) software?
2008 Mar 19
1
adimpro package : R does not seem to find my ImageMagick installation
Dear list,
(sorry if I post to the wrong place...),
Though having spent some time on it, I cannot find an answer by myself
to the following behaviour of the read.image function (adimpro package) :
I'm running R.2.6.2 on Windows XP. The home directory is C:\Program
files\R\R-2.6.2
Version 0.4.4 of adimpro is loaded.
ImageMagick 6.3.0 is installed, its directory is C:\Program
2007 Apr 25
5
Upload PDF / Save as tiff
Hi,
I''m trying to automate the conversion of a PDF document received via a
browser upload to a tiff image via ghostscript. I have the PDF data in
a string, and I need the tiff data returned into a string.
The general command I want to emulate is:
type test.pdf | "c:\program files\gs\gs8.56\bin\gswin32c.exe" -q
-dNOPAUSE -dBATCH -sDEVICE=tiffg4 -sOutputFile=- > test5.tiff
2003 Dec 09
1
Importing TIFF files into a R matrix
Hi
I am facing a problem where I would like to import a TIFF image (of spots on a nylon filter) into R (into a matrix for example). When plotting the matrix using fx. scatterplot3d I would then be able to see how the pixel-intensities are distributed in "spot-areas" on the filter - which would be very helpful.
Does anynone know of a way to do this?
Best regards,
Peter Hagedorn
...
2004 Feb 14
1
Digital Image Processing
I have seen several posts (but few answers) in "R-help search" as to whether there are any packages that use R to process digital images. There are several categories related to the general type of problem that are useful to know about:
-- Any existing packages for taking a digital image format {any flavor like TIFF, jpg, png, or GIF (or even TWAIN input)} and representing it internally
2001 Sep 06
1
RFC: package pixmap
There is a new package pixmap in $CRAN/src/contrib/Devel which
provides a first shot at a class hierarchy for bitmapped images (as
both bitmap and image are already taken I named it pixmap ... if
somebody has an idea for a better name, please let me know).
This is by no means meant to be final ... more like a basis for
discussion about classes for that purpose. It already has RGB, indexed
and
2006 Oct 03
2
Compiling on Ubuntu
I see several shortcomings in our current method of compiling on linux.
Some things I ran in to which might need to be documented on the wiki:
1) Compiling wx properly. A little discussion of the proper flags
would be helpful.
2) The use of system libraries for jpeg, tiff and png. The rake file
assumes you''ll need these, even if you''re using the builtins from wx.
We
2002 Jul 06
5
about image and rgb
Hi all,
I have a 16 bit image (TIFF) and i want to analyse the pixels distribution.
So, i obtain a matrix which values are between 0 and 2^16 -1.
Now i would like to represnt this image with the fucntions rgb() and
image().
I am not sure , but i think that only 256 colors are available.
So is there a solution to represent all the palette of the colors or i
have to limit
the representations with
2003 May 16
1
Images Import and Analysis
I'm starting a time study on an area. To determine if an individual has
entered the area, we are having timed photographs taken of the area. What I
want to do is import the image files (either one at a time or
simultaneously), convert it to a density image, take the density at multiple
points in the image and determine if they are over an area average
(indicating someone or something is in