R 按照某列值進行行間排序

library(dplyr)

x_importance <- c(  
0.00214138,  0.00223875,  0.00417543,  0.00190968,  0.00401864,  0.00217691,  0.00433094,  0.00226843,  0.00325509,  0.00216857,  0.10460003,  0.00391664,
0.00767382,  0.00396873,  0.00250077,  0.00479975,  0.00427557,  0.0048804,
0.01157961,  0.00317895,  0.00436049,  0.00188456,  0.00387129,  0.00243802,
0.00310723,  0.00224145,  0.00252978,  0.00227851,  0.00279751,  0.00569469,
0.00343455,  0.00259924,  0.00631933,  0.00390691,  0.0049399 ,  0.00793074,
0.00768941,  0.11683329,  0.00476818,  0.00877021,  0.00356901,  0.00351175,
0.00412742,  0.12899243,  0.06790988,  0.14708958,  0.15042191,  0.11592464)

y <- factory.names

#  當然x與y是相對應的
data <- data.frame(
    name = y,
    value = x
)

data %>% 

#  當存在多類別數據時，可按類別進行排序
#  group_by(class) %>%
#  按照降序進行排列，默認升序

  arrange(desc(value))