CODEWITHSUNDEEP
rr-packagecheckpoint
kittygirl
kittygirl

Reputation: 2443

Error in unloadNamespace(package) : namespace 'MASS' is imported by 'vegan' so cannot be unloaded

checkpoint("2019-12-11",R.version = "3.5.3",scanForPackages = FALSE,verbose = TRUE,use.knitr=FALSE, auto.install.knitr = FALSE, scan.rnw.with.knitr = TRUE,forceInstall = FALSE, forceProject = FALSE, use.lock = TRUE)

r$> packageVersion('checkpoint')
[1] '0.4.9'

r$> library(knitr)

r$> library(rmarkdown)

r$> library(MASS)
Error in value[[3L]](cond) : 
  Package 'MASS' version 7.3.51.3 cannot be unloaded:
 Error in unloadNamespace(package) : namespace 'MASS' is imported by 'vegan' so cannot be unloaded

When I face this error,I remove.packages('MASS') and reinstall,but cannot solve this problem.
How to solve this problem?

Upvotes: 2

Views: 3233

Answers (1)

kittygirl
kittygirl

Reputation: 2443

unloadNamespace('mirt')
unloadNamespace('vegan')

solved this problem.

But I am curious when I open R terminal in vs code,then sessionInfo(),output as below: 

[1] Rcpp_1.0.1            lattice_0.20-38       permute_0.9-5         MASS_7.3-51.1         grid_3.5.3            jsonlite_1.6.1        nlme_3.1-137          stats4_3.5.3          vegan_2.5-4           Matrix_1.2-15 [11] pbivnorm_0.6.0        splines_3.5.3         tools_3.5.3           dcurver_0.9.1         compiler_3.5.3        GPArotation_2014.11-1 Deriv_3.8.5           parallel_3.5.3        mnormt_1.5-5          cluster_2.0.7-1 [21] mgcv_1.8-27         lavaan_0.6-3

I don't know how this packages loaded automatically.

Upvotes: 3

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