r - Error in : object of type 'closure' is not subsettable -



r - Error in <my code> : object of type 'closure' is not subsettable -

i able work out code my scraping. seemed working fine , of sudden when ran again, got next error message:

error in url[i] = paste("http://en.wikipedia.org/wiki/", gsub(" ", "_", : object of type 'closure' not subsettable

i not sure why changed nil in code.

please advise.

library(xml) library(plyr) names <- c("george clooney", "kevin costner", "george bush", "amar shanghavi") for(i in 1:length(names)) { url[i] = paste('http://en.wikipedia.org/wiki/', gsub(" ","_", names[i]) , sep="") # parsing code }

in general error message means have tried utilize indexing on function. can reproduce error message with, example

mean[1] ## error in mean[1] : object of type 'closure' not subsettable mean[[1]] ## error in mean[[1]] : object of type 'closure' not subsettable mean$a ## error in mean$a : object of type 'closure' not subsettable

the closure mentioned in error message (loosely) function , environment stores variables when function called.

in specific case, joshua mentioned, trying access url function variable. if define variable named url, error goes away.

as matter of practise, should avoid naming variables after base-r functions. (calling variables data mutual source of error.)

there several related errors trying subset operators or keywords.

`+`[1] ## error in `+`[1] : object of type 'builtin' not subsettable `if`[1] ## error in `if`[1] : object of type 'special' not subsettable

r r-faq

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