我有一张桌子看起来像这样:
df <- read.table(text =
" Day location gender hashtags
'Feb 19 2016' 'UK' 'M' '#a'
'Feb 19 2016' 'UK' 'M' '#b'
'Feb 19 2016' 'SP' 'F' '#a'
'Feb 19 2016' 'SP' 'F' '#b'
'Feb 19 2016' 'SP' 'M' '#a'
'Feb 19 2016' 'SP' 'M' '#b'
'Feb 20 2016' 'UK' 'F' '#a'",
header = TRUE, stringsAsFactors = FALSE)
我想按天/标签/位置和性别计算频率,结果表如下所示:
Day hashtags Daily_Freq men women Freq_UK Freq_SP
Feb 19 2016 #a 3 2 1 1 2
Feb 19 2016 #b 3 …