similar to: using identify() together with plot () and pixmap()

Hi I need to overlay two pixmaps (library (pixmap)). One, a pixmapGrey, is the basis, and on this I need to overlay a pixmapIndexed, BUT: the pixmapIndexed has set only some of its "pixels" to an indexed color, many of its pixels should not cover the basis pixmapGrey pixel, means, for this "in pixmapIndexed not defined pixels" it should be transparent. What would you

Hi, I'm having trouble writing .pnm images which I think is due to a problem with my colour space. The pixmap object seems to be looking for 72 of 8 colours (one per cell?) which doesn't seem healthy... > library(pixmap) > x <- pixmapIndexed(rep(1:8, 9), nrow=6, col=rainbow(8)) > x Pixmap image Type : pixmapIndexed Size : 6x12 Resolution : 1x1

Hi R users: I got the following message when I use the pixmap library on R 1.7.0 over w2K platform (on R 1.6.2 it runs right). pixmapGrey(matrix(c(0,1),128,128)) Error in .class1(object) : Object "from" not found I download the library .zip file from: http://cran.r-project.org/bin/windows/contrib/1.7/pixmap_0.3-2.zip Other question: When I try to "Install package(s) from

Hi All, I have a greyscale image that I am reading in through RGDAL and placing in a pixmap object. As an example use the logo.jpg file that comes with the RGDAL package: #Read the file logo <- system.file("pictures/logo.jpg", package="rgdal")[1] x <- new("GDALReadOnlyDataset", logo) #Create the pixmap object xGrey <- getPixmapGDAL(x) Now I would

Hola! I will want to identify pixels in an image with the mouse, for so getting the image data from the matrix(es), for use in subsequent discriminant analysis. But the following bombs R: (windows XP, rw1071) > str(baboon) list() - attr(*, "size")= int [1:2] 512 512 - attr(*, "cellres")= num [1:2] 1 1 - attr(*, "bbox")= num [1:4] 0 0 512 512 - attr(*,

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?

Hi I use pixmapIndexed tmp.vimp <- array(0,c(x.dim,y.dim)) tmp.vimp <- pixmapIndexed(tmp.vimp, col=rainbow) to plot values of a 2D matrix. I 'fill' the pixmapIndexed like: for (x in 1:x.dim) { for (y in 1:y.dim) { tmp.vimp at index[x,y] <- my.matrix[x,y] }} how can I define, that the colors are painted e.g. according the rainbow

Dear all, I have been trying to speed up a process we have been done in ArcGIS. We have to read a single layer TIFF (monochrome image) in . For this, I have used the "rtiff" package. After reading the TIFF file, I compared the raw values for each pixel that I have in ArcGIS to the ones obtained in R. In ArcGIS I have discrete values in the range 0..255, while in R I have continuous

Hi, my name is Ellen. I want to ask you about R Code. I got a code for extracting a pixel value, but I can't compile it..  It is said "Error in is.data.frame(x) : object 'lena' not found" Here is the original full code: library(pixmap) lena <- read.pnm("oldlennablur.pgm") write.table(lena@grey,"mylenna", quote=FALSE, row.names = FALSE, col.names=

Hi sorry if this is the wrong place to post but I'm not sure where to go to and I'm a bit desperate. We just brought our Sunfire 6800 server and Storedge 9960 RAID array Solaris 8 back up after some maintenance and everything came back up 'clean' but I cannot get our SAMBA software to recognise any users or directories when logging in remotely from an apple or windows box.

Full_Name: Wolfgang Huber Version: 1.5.1 OS: Windoof 2000 Submission from: (NULL) (193.174.62.11) Hi, Trying to install the binary distribution (zip file) for the "pixmap" package, as downloaded today from CRAN, I get the following warning "error -1". The package will not be installed. Installation of other packages (e.g. pinktoe, acepack) worked fine. The warning or error

Hi, Can you please help me? Whenever I try to run f.ica.fmri.gui(), R crashes. In the GUI, I selected an *.img file and I checked the 'Create mask' box and I typed a name for the object and then I press 'Start' button. Then in the R Console window it said 'Reading...Whitening', but after the Whitening message an error window popped up and then R crashed. Did I do something

Dear Folks, With Samba 3.0.0 RC1, openldap-2.1.22, with samba as PDC and as much as possible in LDAP, do I need to write an add user script and an add machine script? Or does samba handle this itself? Sorry, I'm rather confused about how to go about setting this all up. -- Nick Urbanik RHCE nicku(at)vtc.edu.hk Dept. of Information & Communications

Jesus how do u post something, it always comes back :( -----Original Message----- From: Rend, Jon (Jon) % [mailto:rend@agere.com] Sent: Tuesday, October 29, 2002 8:05 AM To: 'samba@lists.samba.org' Subject: [Samba] (no subject) On friday we changed our smb.conf file to test the security model that uses DOMAIN authenticacion. It worked fine testing two seperate usernames from Multiple

Full_Name: Roger Bivand Version: 1.7.1 OS: i686-pc-linux-gnu Submission from: (NULL) (129.177.30.18) identify() seg.faults when x is an empty list, when the n argument is given a positive value, avoiding the check for non-positive n (n <- length(x) when x is the non-existent x component of the empty list, and when neither x nor y are components of the list. suggested resolution: add test in

Hi, I would like to plot a graph which sits in the background as a watermark with other plots in the foreground - on top. I have looked through the threads on the r-project website but they seem to concern background colours rather than actual background plots. I have also searched through the demo's and pars but can't find any eg's any ideas - I only want to plot a simple graph

Hi, I ran into the following peculiarity involving S4 method dispatch and namespaces. I develop a package which have a namespace and which depends on 'pixmap' package, which itself does not have a namespace. Now, in my package I have a class which has a slot for objects from class "pixmap" and I want to have a "plot" method for this new class. Not to clutter the

Dear R-listers, I am an enthusiastic new to R and have the following simple (. I hope .) problem: I am searching a function that allows to import jpg files as matrices (n x m x 3) i.e. n_pixels x m_pixels x 3_colors. I have seen the pixmap library, but it seems able only to read BMP pictures (and not all them .). Can someone give me some suggestions ? Thank you in advance.

Dear list, here is a problem I met when trying to use a method for an S4 object, without loading the package in which the method was defined. I do not know if this is a bug, or a mistake of mine. Normally, I think the package in which the appropriate method is defined is loaded automatically when calling the method. The problem is that if the package is indeed loaded automatically, the

First time user, so sorry if I don't understand protocol.. Anyway, I have created a data frame consisting of pearson's R values at various x and y coordinates and then plotted this using filled.contour. My data is similar to fMRI data except that it is a surface map reconstructed from histological sections. I like the results but would like to know how contours were detected. Google search