Error in my code object of type closure is not subsettable

Question

I was finally able to work out the code for my scraping  It seemed to be working fine and then all of a sudden when I ran it again  I got the following error message   Error in url i    paste  http   en wikipedia org wiki    gsub                 object of type  closure  is not subsettable   I am not sure why as I changed nothing in my code   Please advise   library XML  library plyr   names  lt - 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            some parsing code

User · Answer

I had this issue was trying to remove a ui element inside an event reactive:

myReactives <- eventReactive(input$execute, {
    ... # Some other long running function here
    removeUI(selector = "#placeholder2")
})

I was getting this error, but not on the removeUI element line, it was in the next observer after for some reason. Taking the removeUI method out of the eventReactive and placing it somewhere else removed this error for me.

User · Answer

I think you meant to do url i   lt - paste      instead of url i    paste      If so replace   with  lt -

User · Answer

In general this error message means that you have tried to use indexing on a function   You can reproduce this error message with  for example  mean 1     Error in mean 1    object of type  closure  is not subsettable mean  1      Error in mean  1     object of type  closure  is not subsettable mean a    Error in mean a   object of type  closure  is not subsettable   The closure mentioned in the error message is  loosely  the function and the environment that stores the variables when the function is called     In this specific case  as Joshua mentioned  you are trying to access the url function as a variable   If you define a variable named url  then the error goes away   As a matter of good practise  you should usually avoid naming variables after base-R functions    Calling variables data is a common source of this error       There are several related errors for trying to subset operators or keywords       1     Error in     1    object of type  builtin  is not subsettable  if  1     Error in  if  1    object of type  special  is not subsettable     If you re running into this problem in shiny  the most likely cause is that you re trying to work with a reactive expression without calling it as a function using parentheses   library shiny  reactive df  lt - reactive       data frame col1   c 1 2 3                  col2   c 4 5 6        While we often work with reactive expressions in shiny as if they were data frames  they are actually functions that return data frames  or other objects    isolate       print reactive df        print reactive df   col1       col1 col2 1    1    4 2    2    5 3    3    6  1  1 2 3   But if we try to subset it without parentheses  then we re actually trying to index a function  and we get an error   isolate      reactive df col1   Error in reactive df col1   object of type  closure  is not subsettable

User · Answer

You don t define the vector  url  before trying to subset it   url is also a function in the base package  so url i  is attempting to subset that function    which doesn t make sense   You probably defined url in your prior R session  but forgot to copy that code to your script

User · Answer

In case of this similar error  Warning  Error in    object of type  closure  is not subsettable    No stack trace available   Just add corresponding package name using     e g   instead of tags        write  shiny  tags

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

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