如何在sparklyr中实现ivot_wider?

时间:2020-05-14 18:42:48

标签: r dplyr sparklyr

我有一个Spark数据框,我想将该数据框转置的时间更长或更宽。使用row

library(dplyr)
dummy <- data.frame("ID" = c(1,1,1,1,2,2),
                    "category"=c("A","A", "B", "B", "C", "C"),
                    "row"=c(1,2,1,2,1,2),
                    "quantity"=c(1,5,6,7,4,5),
                    "price"=c(10.2, 45.6, 70.3, 23.4, 10,11))

> dummy
   ID category row quantity price
 1  1        A   1        1  10.2
 2  1        A   2        5  45.6
 3  1        B   1        6  70.3
 4  1        B   2        7  23.4
 5  2        C   1        4  10.0
 6  2        C   2        5  11.0

我想将其转换为

dummy <-dummy %>% 
  dplyr::group_by(ID, category) %>% 
  tidyr::pivot_wider(names_from = row, values_from = c(quantity, price))

> dummy

     ID category quantity_1 quantity_2 price_1 price_2
  <dbl> <fct>         <dbl>      <dbl>   <dbl>   <dbl>
1     1 A                 1          5    10.2    45.6
2     1 B                 6          7    70.3    23.4
3     2 C                 4          5    10      11 

但是在Sparklyr中,我无法广泛使用数据透视表,请提出解决方案

0 个答案:

没有答案