query main market data by category — md

md_cate provides an interface to access main market data in five categories, including forex, money, bond, index, commodity.

md_cate(cate = NULL, symbol = NULL, date_range = "3y", from = NULL,
  to = Sys.Date(), print_step = 1L, ...)

Arguments

cate: the market category, forex, money, bond, index, commodity. Default is NULL.
symbol: symbols of main market indicators.
date_range: date range. Available value includes '1m'-'11m', 'ytd', 'max' and '1y'-'ny'. Default is '3y'.
from: the start date. Default is NULL. If it is NULL, then calculate using date_range and end date.
to: the end date. Default is the current date.
print_step: a non-negative integer, which will print symbol name by each print_step iteration. Default is 1L.
...: ignored parameters

if (FALSE) {
dat = md_cate()
}