舍入数字并强制R显示0

Question

我正在计算值，它们本质上是十进制值，我也应该在表中报告它们。为了整洁的呈现，我如何将所有值舍入到3个小数位，甚至强制R为小于3位小数的值添加0？这是一个更实际的例子：

# The following vector contains all the values I computed (this is an example)
results <- c(1.25854, 3.2, 2.84)

# I am currently using the round() function, which does not give me the desired result
rounded_results <- round(results, 3)
rounded_results

> [1] 1.259 3.2 2.84

# The result I would like to obtain is

> [1] 1.259 3.200 2.840

Answer 1

这是我的方法：

results <- c(1.25854, 3.2, 2.84)
options(digits=4)

> results
[1] 1.259 3.200 2.840