similar to: PVQ/CWRS with separated signs

Hi, I'm studying at ETH Zurich and want to use a pyramid vector quantization for my semester thesis. Unfortunately, I have some troubles with generating the codebooks for high dimensions. For vectors with dimension bigger than 12 it takes such a long computation time to generate. I thought maybe you could help me out with a efficient way to do this? Is there some code available? Thanks for

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dear Celts, I've become intrigued by the problem of spherical quantizers, so I decided to see if I could come up with something better than PVQ. What I wound up writing is something I call an "octagon quantizer. In two dimensions, PVQ uses a "diamond" (square) shape. An octagon code (OVQ) uses an octagon, which is a much better

I''m trying to connect to two ISPs the connections are as follows: Eth0 IP: 192.168.1.1 Mask: 255.255.255.0 Eth1 IP: 216.167.217.241 Mask: 255.255.255.0 Eth2 IP: 216.167.208.40 Mask: 255.255.255.0 Here are the commands to set things up: #Load modules insmod /lib/modules/2.6.19.2- pyramid.metrix.net/kernel/net/ipv4/multipath_drr.ko insmod

I''m trying to connect to two ISPs the connections are as follows: Eth0 IP: 192.168.1.1 Mask: 255.255.255.0 Eth1 IP: 216.167.217.241 Mask: 255.255.255.0 Eth2 IP: 216.167.208.40 Mask: 255.255.255.0 Here are the commands to set things up: #Load modules insmod /lib/modules/2.6.19.2- pyramid.metrix.net/kernel/net/ipv4/multipath_drr.ko insmod /lib/modules/2.6.19.2-

Dear R list members I would be grateful if anyone could guide me to a solution for fixing my rimage package problem described below. I recently upgraded my machine from fedora core 3 to fedora core 6 and then upgraded R from version 2.3.1 from version 2.4.1. I then fired up R, tried to load the rimage library and received the following messages: > library(rimage) Error in dyn.load(x,

i'm trying to compile the source code for the package 'rimage', and it fails after it starts compiling. I have both fftw and jpeg packages installed, and i'm currently running R 2.7.1 under gentoo x86_64. here goes the output from R while compiling the package: * Installing *source* package 'rimage' ... checking for g++... g++ checking for C++ compiler default

Upon fresh installation of R-patched and rimage on openSUSE 11.3 box, simple fftw on renown lena image cause memory free failure. Quick: Go to the end of this mail and read the error message from R Thoruogh: Find detailed step-by-step how sopprt library fftw2 was installed and how rimage was installed. Regards Mads Jeppe VERSIONS ======== openSUSE -------- # cat /etc/SuSE-release

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 So you're the encoder. Tou get two vectors in (for some band), L and R. One thing you could do with this is compute M = L+R and S = L-R. (Yes, I know, this is not how the encoder actually works. Bear with me.) Then let m = normalize(M) and s = normalize(S). You transmit, m, s, |L|, and |R|. The decoder needs to find unknown positive constants

Hi, I've been looking at ways to make pyramid plots in R. I like the pyramid.plot method in plotrix as it seems the simplest to use and building them in ggplot looks a bit more code intensive than I'd like, being as I'm new to R. This package does pretty much what I need it to do, however I can't seem to scale the x axis labels. The other labels scale fine with labelcex. I

Hello, <http://tolstoy.newcastle.edu.au/R/help/04/07/0312.html#0313qlink1> Could anybody tell me how to generate discrete Laplacian distribution? I need to sample uma discretised Laplacian density like this: J( g -> g´) ~ exp (-lambda | g´ - g |) g in {0,…, gmax} Thanks, Nicolette [[alternative HTML version deleted]]

Dear list, I am trying to construct a perspective plot of a 2D triangle, or pyramid. I can easily do the one dimensional plot (code below), but I can't figure out how to do it in a perspective plot for two input variables. Does anyone have a simple solution? Thanks! Derek #code for a triangle u <- seq(-1,1,.001) tri <- (1-abs(u)) plot(tri~u,type="l",main="Second

Hi, Calling gdistance::shortestPath gives me the error Error in asMethod(object) : not a symmetric matrix; consider forceSymmetric() or symmpart() The output of dput(.traceback()) is pairlist("stop(\"not a symmetric matrix; consider forceSymmetric() or symmpart()\")", "asMethod(object)", "as(Laplacian,\"symmetricMatrix\")",

Dear R Users, Greetings! I am confused with an error message related to "plotrix" library in the newer versions of R. I used to run an R script without fail in the earlier versions (R 2.8.1) of R; but the same script is now throwing up an error message in the newer versions (Now I have R 2.13.0 & R 2.14.0). Herewith I am furnishing the same code for your perusal. It would

I am using pyramid.plot() from the plotrix package. I have something like this ############################################ xy.pop<-dados$masfr xx.pop<-dados$femfr #agelabels<-dados$femlab xycol<-color.gradient(c(0,0,0.5,1),c(0,0,0.5,1),c(1,1,0.5,1),11) xxcol<-color.gradient(c(1,1,0.5,1),c(0.5,0.5,0.5,1),c(0.5,0.5,0.5,1),11) xylab<-dados$maslab xxlab<-dados$femlab

Hi I have write A function to draw pyramid of age. I have two function draw.pyramide(h,f,l) , pyramide(h,f,l) and a data frame with data. I first use package.skeleton("pyra") I got the package structure Then in my shell I use > RCMD build pyra I get this : check for description ... OK .... removing junk files but "cannot open

Hello, I have compared the potentials of R and Stata about GLMM, analysing the dataset 'ohio' in the package 'faraway' (the same dataset is analysed with GEE in the book 'Extending the linear model with R' by Julian Faraway). Basically, I've tried the 2 commands 'glmmPQL' and 'glmer' of R and the command 'xtmelogit' of Stata. If I'm not

Hi all Another question related to my earlier -- how might I get transparency to work with pyramid.plot in library(plotrix)? I can't figure it out, and the help page says it is there but doesn't give an example. Thanks!

I'm creating a stacked bar chart using the likert command in the HH package. My data are in a data frame, with two numeric variables and a categorical variable, I can't get likert to use the column containing the categorical variable as a my y axis label. Here is a quick example: library(HH) #my data are:

Dear R-users, I am trying to add some text in a textbox to all panels in the following example file. Using the panel-function, I can add a white rectangle with panel.rect but then I have to fit in the text into the box by hand and it will not automatically be centered. Does anyone know how to add the text centered with a white box around it automatically? Is there something like panel.textbox for

Hello, I forgot in my last reply that my DWT implementation can be speed up, for example I'm doing for now: for (;_X1<_E_;_X1++,_RES+=2) //dilatation { _RES[0]=_X1[0]<<3; _RES[1]=(_X1[1]+_X1[0])<<2; } then for (;_X2<_E_;_X2++,_RES+=2) //details { _RES[0]-=(_X2[1]+_X2[0])<<1; _RES[1]+=6*_X2[1]-_X2[2]-_X2[0];