grayskripko
/ R_windows_pipe error_missed.txt
Last active
March 17, 2017 10:01
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| > winCmd <- 'R -q -e "11+1; 1+undef_var; 12+2"' | |
| > pp <- pipe(winCmd, open='r') | |
| > readLines(pp) # does not return any error message and freezes | |
| [1] "> 11+1; 1+undef_var; 12+2" "[1] 12" | |
| > close(pp) | |
| > winCmd <- 'R -q -e "11+1; 1+undef_var; 12+2" 2>&1' | |
| > pp <- pipe(winCmd, open='r') | |
| > readLines(pp) # works fine | |
| [1] "> 11+1; 1+undef_var; 12+2" "[1] 12" |
grayskripko
/ R_multiple_assignment.txt
Last active
March 17, 2017 10:03
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| > ls() | |
| character(0) | |
| > foo <- function() list(a=1, b=2) | |
| > invisible(list2env(foo(), envir = environment())) | |
| > ls() | |
| [1] "a" "b" "foo" | |
| > rm(list=ls()) | |
| > foo <- function() list(1, 2) | |
| > invisible(list2env(mapply(assign, c('c', 'd'), foo(), SIMPLIFY = F), envir=environment())) |
grayskripko
/ R_parallel_randomForest.txt
Created
March 17, 2017 09:59
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| registerDoParallel(cores=2) | |
| rf.mod <- foreach(ntree=rep(500, 6), .combine=combine, .multicombine=TRUE, | |
| .packages='randomForest') %dopar% { | |
| randomForest(ЗДЕСЬКАКОБЫЧНО) | |
| } |
grayskripko
/ R_memory_size.txt
Created
March 17, 2017 10:02
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| object_size(stat) * 2**30 / nrow(stat) / ncol(stat) # 8.59 | |
| 2**30 / 8.59 # 125 * 1e6 | |
| nrow(X) * ncol(X) / 125 / 1e6 # 80 Gb |
grayskripko
/ R_find_function_def.txt
Created
March 17, 2017 10:03
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| methods('format') | |
| getAnywhere('format.facet') # == ggplot2:::format.facet | |
| class(dtm) | |
| [1] "TermDocumentMatrix" "simple_triplet_matrix" | |
| getAnywhere(as.matrix.simple_triplet_matrix) |
grayskripko
/ R_export_registerDoSEQ.txt
Created
June 22, 2017 14:59
object ‘registerDoSEQ’ is not exported by 'namespace:doParallel'
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| foreach::registerDoSEQ |
grayskripko
/ 340_bug.txt
Created
June 27, 2017 10:38
missing value where TRUE/FALSE needed, devtools install, Windows 10, R 3.4.0
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Patch for Windows https://cran.r-project.org/bin/windows/base/rtest.html | |
| Otherwise you can close all file explorer windows :) | |
| This bug appeares when R tryes to get modification date for C:\Users\<SomeUser>\Documents\R\win-library\3.4 folder (my case). | |
| More precisely for one of .libPaths() | |
| For R 3.4.0 it can be NA for an open folder (open = locked by another process). NA in if() gives the error |
grayskripko
/ install_could_not_find_build_tools.txt
Last active
July 19, 2017 23:14
Devtools::install_github() Installation failed: Could not find build tools necessary to build catboost
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Just rerun the previous command one more time |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| list(a=1, b=if (F) 2) %>% Filter(function(x) !is.null(x), .) |
grayskripko
/ multiple_actual_args.txt
Last active
July 20, 2017 15:57
caret: Error in method$fit ... formal argument <some_name> matched by multiple actual arguments
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| debug(caret::createModel) | |
| pay attention to model$fit: https://github.com/topepo/caret/blob/master/pkg/caret/R/createModel.R#L46 | |
| If <some_name> == 'param' and you use do.call(caret::train, arg_list), pass parameters in 'param' without list, as is. | |
| Anyway, the important part of the stacktrace is: | |
| 1. caret::train.default | |
| 2. caret::createModel # <- the location of the problem | |
| 3. model$fit |
OlderNewer