Error in Shiny: Warning: Error in as_mapper: argument ".f" is missing, with no default

shiny
#1

I'm just following the shiny written tutorial.

And I get this error when running the app:

Warning: Error in as_mapper: argument ".f" is missing, with no default

I have copied the model answer exactly, and it still produces this error, so I am unsure what is wrong. Could anyone please help me out here?

#2

The tutorial is not a complete working example. You have to fill in some values yourself. It even says so on the page.

You need to add suitable arguments to the percent_map() function, which is defined in the helper.R script. For example

percent_map(var = data, color = "darkgreen", legend.title = "USA")

Then it will work.

#3

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