Error saying "Error in map_df(1, function(i) { : could not find function "map_df"" in R

0 votes

I have the following code wrt web scraping using R

url_base <- "https://cran.r-project.org/web/packages/available_packages_by_name.html"
map_df(1:100, function(i){
                page <- read_html(sprintf(url_base,i))
                data.frame(IssueID = html_text(html_nodes(page,"h1")),
                       heading = html_text(html_nodes(page,"td")),
                       description = html_text(html_nodes(page,"td")))
}) -> packages

But I end up with the following error, idk why?

Error in map_df(1, function(i) { : could not find function "map_df"
Nov 20, 2018 in Data Analytics by Ali
• 10,430 points
487 views

1 answer to this question.

0 votes

Make sure you’ve installed the package purr and in case you’ve already installed it and still facing the same error then load that into the library using the following command

library(purr)
answered Nov 20, 2018 by Maverick
• 10,040 points

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