[英]R furrr plan returns errors when trying to tweak the multisession plan?
[英]When performing multisession work, future_lapply says that a package doesn't exist, but it works fine when running plan(sequential)
當我嘗試將future_apply
與plan(multisession)
一起使用時,它說我嘗試使用的 package 不存在。 當我使用plan(sequential)
時,它工作正常。 使用plan(callr)
時我也遇到同樣的錯誤。
這是錯誤:
Error in loadNamespace(name): there is no package called 'fuzzyjoin'
誰能幫我找出解決方案或這里出了什么問題?
我不確定這是否與 future.apply package 或 future 或 globals 包有關,因為我知道它們也參與其中。
這是我的代碼顯示問題:
library(fuzzyjoin)
library(future.apply)
#> Loading required package: future
library(dplyr)
#> Attaching package: 'dplyr'
#> The following objects are masked from 'package:stats':
#>
#> filter, lag
#> The following objects are masked from 'package:base':
#>
#> intersect, setdiff, setequal, union
library(tidyr)
iris_mod<- iris %>%
mutate(examplefield= Sepal.Width + Petal.Length,
Species = as.character(Species))
iristype <- iris_mod$Species %>% unique()
plan(sequential)
test_sequential <- future_lapply(iristype,
FUN = function(x) {
fuzzyjoin::fuzzy_left_join(
iris_mod %>% filter(Species %in% x),
iris_mod,
by = c("Species"="Species",
"examplefield"="Sepal.Length"),
match_fun = list(`==`, `<`)
)},
future.chunk.size= 2
)
plan(multisession)
test_multisession <- future_lapply(iristype,
FUN = function(x) {
fuzzyjoin::fuzzy_left_join(
iris_mod %>% filter(Species %in% x),
iris_mod,
by = c("Species"="Species",
"examplefield"="Sepal.Length"),
match_fun = list(`==`, `<`)
)},
future.chunk.size=2
)
#> Error in loadNamespace(name): there is no package called 'fuzzyjoin'
由代表 package (v2.0.1) 於 2022 年 1 月 28 日創建
如果相關的話,我正在運行 R v4.0.3。
我運行了以下代碼,發現由於某種原因沒有正確傳遞庫路徑。 我的骯臟修復只是為了確保將軟件包安裝在future
正在尋找的 libPath 上。
install.packages("fuzzyjoin", lib= "C:/Program Files/R/R-4.0.3/library" )
這是我運行以發現我的正常 session 和 future_lapply/future session 使用不同的庫路徑的代碼:
.libPaths()
# [1] "\\\\networkfileservername/Userdata/myusername/Home/R/win-library/4.0" "C:/Program Files/R/R-4.0.3/library"
f_libs%<-% .libPaths()
print(f_libs)
# [1] "C:/Program Files/R/R-4.0.3/library"
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