How to Create dataframe from hierarchy dataframe?

General
1

I am trying to create dataframe from hierachy dataframe (STIC4) and i get an error. however if I read STIC sheet, everything works fine

utils::browseURL("https://unstats.un.org/unsd/classifications/Econ")

utils::download.file("https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/SITCCodeandDescription.xlsx", "SITCCodeandDescription.xlsx",
                     mode = "wb", quiet = TRUE)

dt1 <- readxl::read_excel("SITCCodeandDescription.xlsx", "SITC4") %>% 
  dplyr::rename_with(tolower)

dt2 <- dt1 %>% 
  dplyr::select(parent = "parent code", child = code)  %>% 
  tidyr::drop_na() %>% 
  data.tree::FromDataFrameNetwork() %>% 
  data.tree::ToDataFrameTypeCol()

Error in data.tree::FromDataFrameNetwork(.) :
Cannot find root name. network is not a tree!

2

dt1 is a data.frame—well technically a 'tibble' but basically it is a data.frame. Can you explain a bit more what you want to achieve?

3

if you are reading sheet SITC3, dt2 will be similar to this image

image
image667×508 19.2 KB

ie transfer dataframe or tibble from parent child to all levels

4

if you are reading sheet SITC3, dt2 will be similar to this image.
Yes, I get the same. I get SITC1, SITC3, & SITC3 to process.

At the moment I'd guess that you have a non-compliant file. There may be a typo or something in the file but I don't know enough about {data.tree} or the UN's file structures to know how to check it.

Maybe a query to the responsible people at the UN?

5

I need to figure out what is the problem to contact UNSD.

6

I think you have found enough to bring the issue to UNSD's attention. If you can successfully convert 3 out of 4 data.frames then this seems enough to alert UNSD to a serious problem in one of their data sets.