SPX1715I1000 <- get_iqfeed_data('SPX1715I1000', '2017-01-01', '2017-08-25', 'tick')
The above produced the following warning, not sure what is causing it.
:=(from, from + 1)) :
Coerced 'double' RHS to 'integer' to match the column's type; may have truncated precision. Either change the target column to 'double' first (by creating a new 'double' vector length 4 (nrows of entire table) and assign that; i.e. 'replace' column), or coerce RHS to 'integer' (e.g. 1L, NA_[real|integer]_, as.*, etc) to make your intent clear and for speed. Or, set the column type correctly up front when you create the table and stick to it, please.