我目前正在使用Twitters API创建个人推文的直方图。我创建了一个用户发推文的日期列表(在 for 循环中)。
dates=c(dates,obtweets[[i]]$getCreated());
日期示例:
> dates[1:3]
[1] "2012-09-09 16:01:18 EDT" "2012-09-29 17:26:12 EDT"
[3] "2012-09-28 17:53:34 EDT"
但是,当我生成 hist(日期,breaks=7) 时,它在 y 轴上显示密度而不是频率。
知道如何显示频率而不是密度吗?
来自?hist
文档:
freq: logical; if ‘TRUE’, the histogram graphic is a representation
of frequencies, the ‘counts’ component of the result; if
‘FALSE’, probability densities, component ‘density’, are
plotted (so that the histogram has a total area of one).
Defaults to ‘TRUE’ _if and only if_ ‘breaks’ are equidistant
(and ‘probability’ is not specified).
所以你应该尝试hist(dates, breaks = 7, freq = TRUE)
.