Hello! I tried to install the 'RccpMeCab' package, but failed. I have installed the 'RMeCab' package, and when I ran install.packages("RccpMeCab"), the information returned is as following:

Package which is only available in source form, and may need compilation of
C/C++/Fortran: ‘RcppMeCab’
Do you want to attempt to install these from sources? (Yes/no/cancel) y
installing the source package ‘RcppMeCab’

trying URL 'https://cran.rstudio.com/src/contrib/RcppMeCab_0.0.1.1.tar.gz'
Content type 'application/x-gzip' length 23491 bytes (22 KB)

downloaded 22 KB

• installing source package ‘RcppMeCab’ ...
  ** package ‘RcppMeCab’ successfully unpacked and MD5 sums checked
  ** libs
  clang++ -std=gnu++11 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/Rcpp/include" -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/RcppParallel/include" -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/BH/include" -I/usr/local/include mecab-config --cflags -fPIC -Wall -g -O2 -c RcppExports.cpp -o RcppExports.o
  /bin/sh: mecab-config: command not found
  clang++ -std=gnu++11 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/Rcpp/include" -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/RcppParallel/include" -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/BH/include" -I/usr/local/include mecab-config --cflags -fPIC -Wall -g -O2 -c posLoopRcpp.cpp -o posLoopRcpp.o
  /bin/sh: mecab-config: command not found
  clang++ -std=gnu++11 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/Rcpp/include" -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/RcppParallel/include" -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/BH/include" -I/usr/local/include mecab-config --cflags -fPIC -Wall -g -O2 -c posParallelRcpp.cpp -o posParallelRcpp.o
  /bin/sh: mecab-config: command not found
  clang++ -std=gnu++11 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/Rcpp/include" -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/RcppParallel/include" -I"/Library/Frameworks/R.framework/Versions/3.5/Resources/library/BH/include" -I/usr/local/include mecab-config --cflags -fPIC -Wall -g -O2 -c posRcpp.cpp -o posRcpp.o
  /bin/sh: mecab-config: command not found
  /bin/sh: mecab-config: command not found
  clang++ -std=gnu++11 -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/Library/Frameworks/R.framework/Resources/lib -L/usr/local/lib -o RcppMeCab.so RcppExports.o posLoopRcpp.o posParallelRcpp.o posRcpp.o -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation
  /bin/sh: mecab-config: command not found
  installing to /Library/Frameworks/R.framework/Versions/3.5/Resources/library/RcppMeCab/libs
  ** R
  ** inst
  ** byte-compile and prepare package for lazy loading
  ** help
  *** installing help indices
  ** building package indices
  ** testing if installed package can be loaded
  Error: package or namespace load failed for ‘RcppMeCab’ in dyn.load(file, DLLpath = DLLpath, ...):
  unable to load shared object '/Library/Frameworks/R.framework/Versions/3.5/Resources/library/RcppMeCab/libs/RcppMeCab.so':
  dlopen(/Library/Frameworks/R.framework/Versions/3.5/Resources/library/RcppMeCab/libs/RcppMeCab.so, 6): Symbol not found: _mecab_destroy
  Referenced from: /Library/Frameworks/R.framework/Versions/3.5/Resources/library/RcppMeCab/libs/RcppMeCab.so
  Expected in: flat namespace
  in /Library/Frameworks/R.framework/Versions/3.5/Resources/library/RcppMeCab/libs/RcppMeCab.so
  Error: loading failed
  Execution halted
  ERROR: loading failed
• removing ‘/Library/Frameworks/R.framework/Versions/3.5/Resources/library/RcppMeCab’
  Warning in install.packages :
  installation of package ‘RcppMeCab’ had non-zero exit status

The downloaded source packages are in
‘/private/var/folders/hg/q395slr53q5_6g6xcwy8cxnw0000gn/T/Rtmp6QRLLL/downloaded_packages’

My environment information is

R version 3.5.0 (2018-04-23)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS High Sierra 10.13.5

Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.5/Resources/lib/libRlapack.dylib

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] RMeCab_1.00 devtools_1.13.5

loaded via a namespace (and not attached):
[1] httr_1.3.1 compiler_3.5.0 rvcheck_0.1.0 R6_2.2.2 tools_3.5.0 withr_2.1.2
[7] curl_3.2 memoise_1.1.0 git2r_0.21.0 digest_0.6.15

Can you help me to fix the problem?

I often analyze different languages in the same project. Is there a way to specify which language model to use (Japanese or Korean)? I could do this by changing sys_dic, but it would be easier if there is a lang argument based on which pos() switches models internally.

By the way I started advertising your package: https://koheiw.net/wp-content/uploads/2018/07/Asian-text-analysis.pdf

Hello,

I have used RcppMeCab very well, but the error has occurred since I formatted my PC and reinstalled all of the latest versions of R and Rstudio.

When pos() is used with the following code,

test <- "이것은 비타500입니다."
pos(iconv(test, to = "UTF-8"))

I found the error message like

Exception:
list()

Here is the information from R and R studio that I am using.

R version: 4.0.3
R Studio version: Version 1.4.1103

You know, only when using windows, the package uses pre-packaged libmecab.dll for its compiling.
This approach is now quite fine so that the package works well when using 64bit Windows and MeCab for Japanese.

However, it still has some troubles using Windows and Korean MeCab.

I tried to use RcppMeCab::pos with Korean MeCab and mecab-ko-dic under my local machine,
it occured an Exception and returned nothing.

R version 4.2.3 (2023-03-15) -- "Shortstop Beagle"
Copyright (C) 2023 The R Foundation for Statistical Computing
Platform: powerpc-apple-darwin10.8.0 (32-bit)

> library(testthat)
> library(RcppMeCab)
> 
> test_check("RcppMeCab")
[ FAIL 1 | WARN 0 | SKIP 1 | PASS 0 ]

══ Skipped tests ═══════════════════════════════════════════════════════════════
• Skip testing on Japanese (1)

══ Failed tests ════════════════════════════════════════════════════════════════
── Failure ('test_pos_ko.R:4:3'): Test pos tagger works on ko ──────────────────
...[] not equal to enc2utf8("저").
1/1 mismatches
x[1]: "\xb0\xac"
y[1]: "저"

[ FAIL 1 | WARN 0 | SKIP 1 | PASS 0 ]
Error: Test failures
Execution halted

Version info:
mecab 0.996_0+ipadic
RcppMeCab 0.0.1.3-2

> tar <- "안녕하세요 저는 박찬엽 입니다."
> Encoding(tar)
[1] "UTF-8"
> pos(tar, sys_dic = "c:\\mecab")
Exception: 
list()

but when format = "data.frame" return is ok.

pos(tar, format = "data.frame")
  doc_id sentence_id token_id  token    pos subtype
1      1           1        1   안녕    NNG    행위
2      1           1        2     하    XSV        
3      1           1        3   세요  EP+EF        
4      1           1        4     저     NP        
5      1           1        5     는     JX        
6      1           1        6 박찬엽    NNP    인명
7      1           1        7 입니다 VCP+EF        
8      1           1        8      .     SF   

my sessionInfo() below

R version 3.5.1 (2018-07-02)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows >= 8 x64 (build 9200)

Matrix products: default

locale:
[1] LC_COLLATE=Korean_Korea.949  LC_CTYPE=Korean_Korea.949    LC_MONETARY=Korean_Korea.949
[4] LC_NUMERIC=C                 LC_TIME=Korean_Korea.949    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] RcppMeCab_0.0.1.2

loaded via a namespace (and not attached):
[1] compiler_3.5.1     tools_3.5.1        Rcpp_0.12.18       RcppParallel_4.4.1

It's now on cran : https://CRAN.R-project.org/package=RcppMeCab

Need to check RcppMeCab results using Japanese.

@koheiw, Could you help on this? Any ideas?

pos() retuns a data.frame but its columns are all integers. I think it should have columns in the following format:

doc_id: factor
sentence_id: integer
token_id: integer
token: character
subtype: character
analytic: character

Hi @junhewk, I started using your package in my actual project, and I wanted to address #6 via a PR. However, I cannot build the package on my system because of an error to link to Mecab. I have seen this kind of error in my packages but could not solve. Any clue?

==> Rcpp::compileAttributes()

* Updated R/RcppExports.R

==> R CMD INSTALL --no-multiarch --with-keep.source RcppMeCab

* installing to library ‘/home/kohei/R/x86_64-pc-linux-gnu-library/3.6’
* installing *source* package ‘RcppMeCab’ ...
** using staged installation
make: Nothing to be done for 'all'.
** libs
installing to /home/kohei/R/x86_64-pc-linux-gnu-library/3.6/00LOCK-RcppMeCab/00new/RcppMeCab/libs
** R
** inst
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
Error: package or namespace load failed for ‘RcppMeCab’ in dyn.load(file, DLLpath = DLLpath, ...):
 unable to load shared object '/home/kohei/R/x86_64-pc-linux-gnu-library/3.6/00LOCK-RcppMeCab/00new/RcppMeCab/libs/RcppMeCab.so':
  /home/kohei/R/x86_64-pc-linux-gnu-library/3.6/00LOCK-RcppMeCab/00new/RcppMeCab/libs/RcppMeCab.so: undefined symbol: mecab_strerror
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/home/kohei/R/x86_64-pc-linux-gnu-library/3.6/RcppMeCab’
* restoring previous ‘/home/kohei/R/x86_64-pc-linux-gnu-library/3.6/RcppMeCab’

> sessionInfo()
R version 3.6.0 (2019-04-26)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: KDE neon User Edition 5.15

Matrix products: default
BLAS:   /usr/lib/x86_64-linux-gnu/openblas/libblas.so.3
LAPACK: /usr/lib/x86_64-linux-gnu/libopenblasp-r0.2.20.so

locale:
 [1] LC_CTYPE=en_GB.UTF-8       LC_NUMERIC=C               LC_TIME=en_GB.UTF-8        LC_COLLATE=en_GB.UTF-8    
 [5] LC_MONETARY=en_GB.UTF-8    LC_MESSAGES=en_GB.UTF-8    LC_PAPER=en_GB.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C             LC_MEASUREMENT=en_GB.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
[1] compiler_3.6.0 tools_3.6.0