连接超时

连接网页时超时错误：

Error in open.connection(x, "rb") : 
  Timeout was reached: Operation timed out after 10234 milliseconds with 0 out of 0 bytes received

解决方法：

#提高连接时间
options(timeout= 4000000)

from https://stackoverflow.com/questions/46632695/error-in-open-connectioncon-rb-timeout-was-reached-resolving-timed-out-a?rq=1