networkDynamic 的 edge.spells 参数的开始时间列必须是数字

Question

I am trying to create a networkDynamic object and have tried following all of skyebend's suggestions in oymonk's post how upload a dataframe to ndtv in R in setting up the columns in the right order and the data types for each column here correctly. 不幸的是，我下面的示例继续返回，当 str() 清楚地表明我的起始列不是数字时。 对于我所缺少的任何建议，我将不胜感激。

library("dplyr")
library("ndtv")

time = 
structure(list(onset = c(1571011200, 1571616000, 1571011200, 
1570406400, 1571616000, 1570406400, 1570406400, 1571011200, 1571011200, 
1571616000, 1572220800, 1570406400, 1570406400, 1571616000, 1571011200, 
1571011200, 1570406400, 1571616000, 1571011200, 1570406400, 1571616000, 
1570406400, 1571011200, 1570406400, 1570406400, 1570406400, 1571011200, 
1570406400, 1571616000, 1571616000, 1570406400, 1571011200, 1571011200, 
1570406400, 1570406400, 1571011200, 1572220800, 1571616000, 1571616000, 
1571011200, 1572220800, 1571616000, 1570406400, 1570406400, 1571011200, 
1571011200, 1571616000, 1571011200, 1571616000, 1571616000), 
    terminus = c(1571356800, 1571961600, 1571356800, 1570752000, 
    1571961600, 1570752000, 1570752000, 1571356800, 1571356800, 
    1571961600, 1572566400, 1570752000, 1570752000, 1571961600, 
    1571356800, 1571356800, 1570752000, 1571961600, 1571356800, 
    1570752000, 1571961600, 1570752000, 1571356800, 1570752000, 
    1570752000, 1570752000, 1571356800, 1570752000, 1571961600, 
    1571961600, 1570752000, 1571356800, 1571356800, 1570752000, 
    1570752000, 1571356800, 1572566400, 1571961600, 1571961600, 
    1571356800, 1572566400, 1571961600, 1570752000, 1570752000, 
    1571356800, 1571356800, 1571961600, 1571356800, 1571961600, 
    1571961600), tail = c(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 
    10L, 11L, 12L, 12L, 13L, 14L, 15L, 16L, 17L, 18L, 19L, 20L, 
    21L, 22L, 23L, 24L, 25L, 12L, 5L, 26L, 27L, 28L, 29L, 30L, 
    31L, 32L, 33L, 34L, 35L, 25L, 36L, 37L, 38L, 39L, 39L, 40L, 
    41L, 42L, 43L, 44L, 45L), head = c(307L, 308L, 309L, 310L, 
    307L, 311L, 312L, 308L, 313L, 313L, 308L, 309L, 308L, 308L, 
    308L, 308L, 314L, 307L, 315L, 308L, 307L, 308L, 314L, 313L, 
    309L, 313L, 308L, 315L, 313L, 312L, 310L, 309L, 307L, 309L, 
    308L, 308L, 313L, 308L, 316L, 312L, 312L, 307L, 315L, 309L, 
    317L, 317L, 307L, 312L, 309L, 314L)), row.names = c(NA, -50L
), class = c("tbl_df", "tbl", "data.frame"))

time_dyn = time %>% networkDynamic(edge.spell = .)

time %>% str()

我真的不明白我在这里缺少什么。 任何帮助将不胜感激，如果需要任何其他信息来重现此示例，请告诉我。

Answer 1

我不明白这背后的格式，但似乎将我的边缘列表从 tbldf 转换为常规 dataframe 就可以了。

我只是通过在转换为 networkDynamic 之前执行以下操作来做到这一点

time = time %>% data.frame()
time = time %>% networkDynamic(edge.spells = time)