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Update lesson_5_-_mutate.R #5

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10 changes: 5 additions & 5 deletions lesson_5/lesson_5_-_mutate.R
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Original file line number Diff line number Diff line change
Expand Up @@ -8,24 +8,24 @@ ga_data <- vroom("https://raw.githubusercontent.com/selesnow/publications/master
# mutate
# добавл¤ем новый столбец
ga_data <- mutate(ga_data,
bounce_rate = bounces / sessions)
bounce_rate = bounces / sessions) #новый столбец = формула

ga_data <- mutate(ga_data,
bounce_rate = bounces / sessions,
br_group = if_else(bounce_rate > 0.6, "high_br", "normal_br"))
br_group = if_else(bounce_rate > 0.6, "high_br", "normal_br")) #такое же строение как функции в excel

# примен¤ем преобразование к уже существующим столбцам
ga_data %>% mutate_if(is.character, toupper)
ga_data %>% mutate_if(is.character, toupper) #меняет регистр данных в столбце

# преобразуем значени¤ существующих столбцов примен¤¤ регул¤рные выражени¤
ga_data %>% mutate_at(vars(matches("s$")), sqrt )
ga_data %>% mutate_at(vars(matches("s$")), sqrt ) #заменяет данные в столбцах на их квадратный корень

# transemute
# убираем все столбцы кроме преобразованных
transmute(ga_data,
bounce_rate = bounces / sessions,
date = format(date, "%d %B %Y"),
source)
source) #преобразования + убирание лишних столбцов

# преобразовываем столбцы по их признаку и удал¤ем все остальные
transmute_if(ga_data,
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