round_any等同于dplyr? [英] round_any equivalent for dplyr?

问题描述

我正在尝试切换到新" tidyverse生态系统，并尝试避免加载旧版本Wickham等人提供的软件包.我以前曾经依赖于我的编码.我发现 round_any 函数来自 plyr 在许多需要对图，表等进行自定义舍入的情况下很有用.例如

I am trying to make a switch to the "new" tidyverse ecosystem and try to avoid loading the old packages from Wickham et al. I used to rely my coding previously. I found round_any function from plyr useful in many cases where I needed custom rounding for plots, tables, etc. E.g.

x <- c(1.1, 1.0, 0.99, 0.1, 0.01, 0.001) 

library(plyr)    

round_any(x, 0.1, floor)
# [1] 1.1 1.0 0.9 0.1 0.0 0.0

tidyverse中的plyr软件包中的round_any功能是否等效?

Is there an equivalent for round_any function from plyr package in tidyverse?

推荐答案

ggplot::cut_width甚至不返回数字矢量，而是返回一个因子.因此，这不是真正的替代品.

ggplot::cut_width as pointed to in one of the comments, does not even return a numeric vector, but a factor instead. So it is no real substitute.

由于默认的取整方法是round而不是floor，因此将进行自定义替换，直到(dplyr解决方案可能到达)

Since round and not floor is the default rounding method, a custom replacement until a (dplyr solution may arrive) would be

round_any = function(x, accuracy, f=round){f(x/ accuracy) * accuracy}

也可以直接从使用dplyr时的命名冲突.

This method could also be used directly from the plyr package which contains this implementation. However, be careful when loading plyr into a workspace which will cause naming conflicts when using dplyr as well.

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