Continue loop execution even if a pass gives problem

Question

Continue loop execution even if a pass gives problem

I am downloading Bovespa stock data by Package quantmod.

However, I still do not know why, in the Santander data (SANB11) the getSymbols function of the package is giving problem and the loop for execution. Do you have a way to make the loop continue execution even when a loop step gave error?

library(quantmod)    
tickers<-c("OIBR4.SA", "PCAR4.SA", "PDGR3.SA", "PETR3.SA", "PETR4.SA", "RENT3.SA", 
           "RSID3.SA", "SANB11.SA", "SBSP3.SA", "SUZB5.SA", "TIMP3.SA", 
           "TRPL4.SA", "UGPA3.SA", "USIM3.SA", "USIM5.SA", "VAGR3.SA", "VALE3.SA", 
           "VALE5.SA", "VIVT4.SA")

for (i in tickers){
getSymbols(i,src="yahoo")
}

5

Author: Rafael Cunha, 2014-02-19

Source

1 answers

score 6 · Accepted Answer

Use the function try. Your code will look like this:

for (i in tickers) {
  try(getSymbols(i,src="yahoo"))
}

The try function evaluates the expression passed as a parameter and captures any errors that occur during evaluation, preventing script execution from being interrupted because of the error.

If you need to treat the error, use the function tryCatch.