similar to: Crash after (wrongly) applying product operator on object from LIMMA package

Hi Hilmar, weird. The memory problem seems be due to recursion (my R, version 3.3.3, says: Error: evaluation nested too deeply: infinite recursion / options(expressions=)?, just write traceback() to see how it happens), but why does it segfault with xlsx? Nb xlsx is the culprit: neither rJava nor xlsxjars cause the problem. On the other hand, quick googling for r+xlsx+segfault returns tons of

Dear Hilmar Perhaps this gives an indication of why the infinite recursion happens: ## after calling `*` on ma and a matrix: > showMethods(classes=class(ma), includeDefs=TRUE, inherited = TRUE) Function: * (package base) e1="FOOCLASS", e2="matrix" (inherited from: e1="vector", e2="structure") (definition from function "Ops")

Hi January, I believe the root of the xlsx issue has been identified and a fix suggested by Tomas Kalibera (see https://github.com/s-u/rJava/pull/102). In a nutshell, Oracle Java on Linux modifies the stack in a way that makes it smaller and and the same time makes it impossible for R to detect this change, leading to segfaults. It is not clear to me that the same problem would occur on Mac,

Hi, following up on my own question, I found smaller example that does not require LIMMA: setClass("FOOCLASS", representation("list") ) ma = new("FOOCLASS", list(M=matrix(rnorm(300), 30,10))) > ma * ma$M Error: C stack usage 7970512 is too close to the limit > library(xlsx) Loading required package: rJava Loading required package: xlsxjars

I think this is a known issue with Java messing with the stack, see e.g. http://r.789695.n4.nabble.com/Error-memory-exhausted-limit-reached-td4729708.html. I'll fix the infinite recursion caused by the methods package. Michael On Wed, Apr 19, 2017 at 1:12 AM, Wolfgang Huber <wolfgang.huber at embl.de> wrote: > Dear Hilmar > > Perhaps this gives an indication of why the

Dear Martin, On 11/09/2019 09:56, Martin Maechler wrote: > > > I wonder if data.frame(<some non-empty data>) == NULL should also return > > a value instead of an error. R help reads: > > > "At least one of |x| and |y| must be an atomic vector, but > > if the other is a list R attempts to coerce it to the > > type of the atomic

Sorry, I can't reproduce the example below even on the same machine. However, the following example produces the same error as NULL values in prior examples: > setClass("FOOCLASS", +????????? representation("list") + ) > ma = new("FOOCLASS", list(M=matrix(rnorm(300), 30,10))) > isS4(ma) [1] TRUE > data.frame(a=1:3) == ma Error in

Hi, On 08/05/17 16:37, Ista Zahn wrote: > One of the key strengths of R is that packages are not akin to "fan > created mods". They are a central and necessary part of the R system. > I would tend to disagree here. R packages are in their majority not maintained by the core R developers. Concepts, features and lifetime depend mainly on the maintainers of the package (even

Hi, I experience surprisingly large timing differences for the multiplication of matrices of the same dimension. An example is given below. How can this be explained? I posted the question on Stackoverflow: https://stackoverflow.com/questions/58886111/r-why-is-matrix-product-slower-when-matrix-has-very-small-values Somebody could reproduce the behavior but I did not get any useful explanations

Dear R users, Im trying to load *"xlsx"* package which depends on *"xlsxjars"* and * "rJava"* packages. All the 3 packages (zipped files) are installed successfully in windows. I have added "C:\Program Files\Java\jre1.6.0_03\bin\client" to the PATH variable to get rJava working. However, the following error message results after inputting

Dear all, I just stumbled upon some behavior of the == operator which is at least somewhat inconsistent. R version 3.6.1 (2019-07-05) -- "Action of the Toes" Copyright (C) 2019 The R Foundation for Statistical Computing Platform: x86_64-w64-mingw32/x64 (64-bit) > list(a=1:3, b=LETTERS[1:3]) == NULL logical(0) > matrix(1:6, 2,3) == NULL logical(0) > data.frame(a=1:3,

Hola, @javier, me gustaría no tener que hacer nada de forma manual, ni por fuera de r, rstudio. Es decir, el típico comando de linux que me convierta de xls a csv prefiero no usarlo. Me gustaría hacerlo todo desde R. @jorge -> Con RODBC me salta -> Error: could not find function "odbcConnectExcel" Lo que creo que es inevitable en Ubuntu

HI, I was trying to install xlsx package for reading in Excel 2007 files. The installation went smoothly. But when I tried to load the library, I got the following error message: > library(xlsx) Loading required package: xlsxjars Loading required package: rJava Error : .onLoad failed in loadNamespace() for 'xlsxjars', details: call: .jinit() error: cannot obtain

Buenos días a todos! Estoy trabajando con una base de datos que directamente he descargado de internet y después de prepararla un poco necesito exportarla a Excel he intentando con las dos opciones que mencionaré al final pero ninguna funciona, de qué otra manera puedo exportar esos datos a Excel... muchas gracias por su ayuda y pronta respuesta! 1) library(xlsx) library(rJava)

Hi, I am facing trouble when trying to read large xlsx file into R. please find the code and error below. The file I was trying to read has 36,500 rows X 188 col, ~ 37 MB size. > options( java.parameters = "-Xmx4g" ) > library(xlsx) Loading required package: xlsxjars Loading required package: rJava > cftc =

Hi all, I am trying to run the package xlsx to read Excel 2007 files and I am getting the error below. > library(xlsx) Loading required package: xlsxjars Loading required package: rJava Error : .onLoad failed in loadNamespace() for 'xlsxjars', details: call: .jinit() error: cannot obtain Class.getSimpleName method ID Error: package 'xlsxjars' could not be loaded By

offline? te lo envío a tu email, pq no creo que a toda la lista sea buena idea. El 15 de agosto de 2014, 9:47, Jorge I Velez <jorgeivanvelez en gmail.com> escribió: > De nada, Miguel. Es posible que me envies el archivo offline? --JIV > > > > 2014-08-15 17:45 GMT+10:00 Miguel Fiandor Gutiérrez < > miguel.fiandor.gutierrez en gmail.com>: > > Gracias

Gracias Jorge por contestar tan rápido. Con gdata hago eso del path, y directamente con el fichero, lo vi en una web, y he intentado todas las opcioens que he visto. En vez de install.packages('rJava', type = 'source') he hecho install.packages('rJava') Ahora probaré, y lo mismo con scan y readLines. He visto en stackoverflow que mi problema puede ser actualizar java,

Dear all, I just found this issue: dd1 = c(rep(NaN,82), rep(-1, 144), rep(1, 74)) xx = runmed(dd1, 21) -> R crashes reproducibly in R 3.4.3, R3.4.4 (Ubuntu 14.04/Ubuntu 16.04) With GDB: Program received signal SIGSEGV, Segmentation fault. swap (l=53, r=86, window=window at entry=0xc59308, outlist=outlist at entry=0x12ea2e8, nrlist=nrlist at entry=0x114fdd8, print_level=print_level at

Hola, Pensé que esto iba a ser trivial en R, pero me estoy encontrado muchos con mi problema en internet, y que las soluciones ofrecidas no terminan de funcionar. Estoy intentando leer un fichero .xls en ubuntu con los siguientes paquetes y nada: require(RODBC) conn = odbcConnectExcel("madrid.xls") # open a connection to the Excel file sqlTables(conn)$TABLE_NAME # show all sheets df =