英文:
How can I subtract a value from a column B based upon a string value of column A
问题
我想要创建另一列（novig_new），其中包含 Pinnacle 书maker 的 novig_prob 值减去其他书maker 对每支球队的值。这是我的 tibble：
这是我想要实现的目标。
英文:
I would like to create another column (novig_new) which contains the value of the Pinnacle bookmaker's novig_prob subtracted from the other bookmakers for each team. Here is my tibble:
This is what I am looking to accomplish.
答案1
得分: 1
或许，我们可能需要
library(dplyr)
df1 %>%
group_by(team) %>%
mutate(novig_new = novig_prob - novig_prob[match("Pinnacle", bookmaker)]) %>%
ungroup
英文:
Perhaps, we may need
library(dplyr)
df1 %>%
group_by(team) %>%
mutate(novig_new = novig_prob - novig_prob[match("Pinnacle", bookmaker)]) %>%
ungroup
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