the problem when I intended to open file(County) in R

I had downloaded file County
then,I tapped load(file.choose())
and I chose County
but when I tapped qtm(County)
it comes out
Error in qtm(County) : could not find function "qtm"


Happy to help if you can provide more detail. It sounds as if the library associated with function qtm cannot be found. I am assuming this is from the tmap package so will need to install and add the library call:

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but I have already install.packages("tmap")

You still need to run the library call to attach the library to your current session so run:


In addition - it won't find County and I suggest installing Rstudio (no reason to suffer on the terminal)

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