[R-meta] how to get vcalc from metafor

[Norman DAURELLE]

Dear list members, 

I recently read a thread in which the vcalc() function from metafor was mentioned and I tried to use it, but Rstudio tells me it can't find the vcalc function. 

I tried re-installing metafor through the "install" button and then i used the following lines 

install.packages("remotes") 
remotes::install_github("wviechtb/metafor") 

but neither method made it work. 

Any advice please ? 

Best wishes, 
Norman. 

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