search for: vectori

Hi everybody, let us assume i have the following matrixX and vectorY matrixX <- runif(100) dim(matrixX) <- c(10,10) vectorY <- as.matrix(as.character(seq(1,10))) if I define: subsample<-c("2") i can extract the rows from matriX based on the elements in vectorY which are listed in subsample matrixX[vectorY==subsample] if I define subsample with more than 1 element, such

...isn't only contained in the comments.. On Fri, Jul 26, 2013 at 4:07 PM, Nadav Rotem <nrotem at apple.com> wrote: > Author: nadav > Date: Fri Jul 26 18:07:55 2013 > New Revision: 187267 > > URL: http://llvm.org/viewvc/llvm-project?rev=187267&view=rev > Log: > SLP Vectorier: Don't vectorize really short chains because they are > already handled by the SelectionDAG store-vectorizer, which does a better > job in deciding when to vectorize. > > Modified: llvm/trunk/lib/Transforms/Vectorize/SLPVectorizer.cpp > URL: > http://llvm.org/viewvc/llvm...

Hi Daniel, Maybe my commit message was not clear. The idea is that the SelectionDAG store vectorizer can only handle pairs. So, the number three means "more than a pair". Thanks, Nadav Sent from my iPhone > On Jul 26, 2013, at 17:48, Daniel Berlin <dberlin at dberlin.org> wrote: > > Hey Nadav, > I'd humbly suggest that rather than use 3 directly, you should...

Hi Nadav, Okay. 1. The comment doesn't make this clear. I would suggest, at a minimum, updating it to mention pairs specifically, to avoid the issue in #2 2. If the day comes when the selectiondag store vectorizer handles more than pairs, and does so better, is anyone really going to remember this random 3 exists in the other vectorizer? I would posit, based on experience, the answer is "no" :) On Fri, Jul 26, 2013 at 7:56 PM, Nadav Rotem <nrotem at apple.com> wrote: > Hi Daniel, &...

...sing 'all.equal with 'identical is almost always preferable. See the examples. But the only relevant example is: x1 <- 0.5 - 0.3 x2 <- 0.3 - 0.1 x1 == x2 # FALSE on most machines identical(all.equal(x1, x2), TRUE) # TRUE everywhere which is not a vectorial example. I do have a work-round of the form: ix <- which(round(X,4)==round(2.3978953,4)) (where rounding to 4 decimal places is enough to distinguish X-values). As said above, ix <- which(X==2.3978953) will not do, since 'which(X==x)' returns an empty result. And using all...

I have 2 vectors A and B. For each element of B I'd like to find the index of the next higher or equal element in A. And I'd like to store it effectiv. E.g.: A <- c(1,3,7,8,10) B <- c(5,8) result: 3, 4 I have a possibility but for long vectors it works not very effectiv: ans <- sapply(B, function(x) which.max(A[A < x]) ) as.integer(ans + 1) Is there anyone how has a better

Dear All, I am trying to use the do.call command to avoid tedious loops in R when I need to call repetitively a function. I am experiencing a problem when the arguments of a function are given with a vector (I need to express then this way to be able later on to integrate them numerically with the adapt package). Consider the small script: remove(list=ls()) #library(adapt) # first a list of the

...#0 has unhandled type f32 /home/julio/trunk/llvm-gcc/gcc/libgcc2.c:1765: internal compiler error: Abortado Please submit a full bug report, with preprocessed source if appropriate. Actually, I don't need fp, there is any way to disable? By the way, I'm working with a MIPS coprocessor with vectorial reconfigurable units (similar to RSVP). My future work will be autovectorize loops (I've already studied some code in LLVM and doesn seems very difficult, thanks to ScalarEvolution, LoopInfo, etc.). I was wondering about compiling newlib with gcc, compiling my code with llvm, and linking with...

...ulio/trunk/llvm-gcc/gcc/libgcc2.c:1765: internal compiler error: > Abortado > Please submit a full bug report, > with preprocessed source if appropriate. > > Actually, I don't need fp, there is any way to disable? > > By the way, I'm working with a MIPS coprocessor with vectorial > reconfigurable units (similar to RSVP). My future work will be autovectorize > loops (I've already studied some code in LLVM and doesn seems very > difficult, thanks to ScalarEvolution, LoopInfo, etc.). I was wondering about > compiling newlib with gcc, compiling my code with ll...

Dear useRs, I'm writing regular survey reports using Sweave. Each report has several sections along the lines of: \section*{Disease X} <<MapX,fig=TRUE,echo=FALSE>>= image(vectorx,vectory,matrixz) @ Notes with or without Sexpr{a}. \vfill \pagebreak \section*{Disease Y} <<MapY,fig=TRUE,echo=FALSE>>= ...etc. Often one or more of the diseases is not observed (all

...lex type a special kind of vector, or a > special kind of aggregate (I have a slight preference for the latter). > That gives us an existing set of accessors. I agree non-vector. If nothing else a vector of complexes seems like a sensible concept which would be harder if a complex was itself vectorial. Myself, I think I do favour insertvalue/extractvalue over intrinsics (which is probably a +1 for isAggregate too by extension). If the notation for the literal is especially re/im rather than 0/1 we might think about adding "extractvalue %v, real" as sugar (that last arg is already w...

Buenos días, alguien sabe si hay alguna manera de implementar una máquina de soporte vectorial (svm) con R-hadoop?? Mi interés es hacer procesamiento big data con svm. Se que en R, existen los paquetes {RtextTools} y {e1071} que permiten hacer svm. Pero no estoy segura de que el algoritmo sea paralelizable, es decir, que pueda correr en paralelo a través de la plataforma R-hadoop. Muchas...

...segunda componente del primer registro, la tercera componente del segundo registro y la tercera componente del tercer registro -No recuerdo si se digo hace tiempo algo de con la librería data.table, me da igual tener que usar cualquier librería, pero el tema es tratar de hacer que sea una operación vectorial que por ejemplo evite un bucle tal como: Resultado <- vector("numeric", 3) for (i in (1:3)){ Resultado[i] = M[i, Indicador[i]]} -El cuál, como he comentado sería lento si el número de filas de matriz fuese muy elevado Un saludo y muchas gracias [[alternative HTML version...

Hello everyone, this is a very simple question but I could not find the answer. :-( Is there any function in R for calculating the rank of a matrix? (In the sense of the dimension of the vectorial space that spans) Thank you in advance! Manuel --- -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the &qu...

...active prompt between each graph. For example, the plot.varest (vars) function produces such output (one graph per time series on which the VAR model is fitted). Plots on GARCH models also produce such outputs. Moreover, the frontend I am using for R (RkWard) does not enable me to export graphs as vectorial image files. How can I export such graphs as separate (e.g.) Postscript files ? par(ask=FALSE) didn't help. Thank you for your answer. -- Renaud Lacour <renaud.lacour at free.fr>

Hi, I am exporting an HDF5 file from Matlab (hdf5write function). It contains several datasets: one scalar, one vectory, one 2-D array, and one 3-D array. The hdf5read() function in the hdf5 library seems to load everything except the 3-D array. There are no errors reported even with verbosity=1, as if the 3-D array did not exist in the .hdf5 file. However, I can read the 3-D array back in using

Hi everyone. I'm using this following code: pdf(file="Fig5.pdf", width = 4.86, height = 6.29, pointsize = 10, family ='Times') par(mfcol = c(3,2), mai = c(0.4,0.8,0,0), omi = c(0.7, 0, 0.7, 0.1)); hist( rnorm(100) ) dev.off() When I open this in any vectorial software (like Illustrator), it says that my font size is 7 instead of 10 that I specified. I have tried (whitout the PAR line): pdf(file="Fig5.pdf", width = 4.86, height = 6.29, pointsize = 10, family ='Times') hist( rnorm(100) ) dev.off() And this is working. Anyone k...

Can we by any change perform in R something similar geoprocessing or, more advanced, Spatial SQL over vectorial data? Paulo [[alternative HTML version deleted]]

Some time ago someone asked for things that make R difficult to master. Here I want to record one R behavior that took me off-guard yesterday. Moral of the story: vectorialize, but don't exaggerate. Hope it helps mario ### A very simple data frame tc <- textConnection( "prefix idx val A 1 11 A 2 22 B 1 33 B 2 44") s <- read.table(tc, stringsAsFactors=FALSE, header=TRUE) close(tc) print(s) ### Matrix I want to fi...

Soy novato, así que imagino que será muy fácil de resolver... Dataset$total <- with(Dataset, if (col>1) 5 else 6) Quiero guardar en la columna total, un 5 si col es mayor que 1 y sino que guarde un 6. Sólo me compara el primer dato de la primera fila, y lo copia para todas las demás. No me lo calcula fila a fila. ¿? [[alternative HTML version deleted]]