0

I am having this list in R, formed by three elements:

df <- structure(list(`[{"code":"B1182","description":"Tire pressure monitor module","faultInformations":[{"description":"---"},{"description":"TRUE","description_eng":"TRUE","description_fre":"TRUE","description_ger":"TRUE","description_spa":"TRUE","description_ita":"TRUE","description_tur":"TRUE"}],"freezeFrames":[],"enhancedDtcInfos":[],"status":"ACTIVE","system":"MULTIFUNCTION","systemMeta":{"systemName":null,"subSystemName":null},"description_eng":"Tire pressure monitor module","description_fre":"Module de surveillance de la pression des pneus","description_ger":"Reifendrucküberwachung","description_spa":"Módulo de control de la presión de los neumáticos","description_ita":"Modulo monitor di pressione pneumatico","description_tur":"Lastik basıncı izleme modülü"},{"code":"B124D","description":"Sensor, tyre pressure","faultInformations":[{"description":"---"},{"description":"TRUE","description_eng":"TRUE","description_fre":"TRUE","description_ger":"TRUE","description_spa":"TRUE","description_ita":"TRUE","description_tur":"TRUE"}],"freezeFrames":[],"enhancedDtcInfos":[],"status":"ACTIVE","system":"MULTIFUNCTION","systemMeta":{"systemName":null,"subSystemName":null},"description_eng":"Sensor, tyre pressure","description_fre":"Capteur, pression des pneus","description_ger":"Sensor Reifendruck","description_spa":"Sensor de presión del neumático","description_ita":"Sensore, pressione pneumatici","description_tur":"Sensör, lastik hava basıncı"}]` = c("B1182", 
"B124D"), `[{"code":"B1182","description":"Tire pressure monitor module","faultInformations":[{"description":"---"},{"description":"TRUE","description_eng":"TRUE","description_fre":"TRUE","description_ger":"TRUE","description_spa":"TRUE","description_ita":"TRUE","description_tur":"TRUE"}],"freezeFrames":[],"enhancedDtcInfos":[],"status":"ACTIVE","system":"MULTIFUNCTION","systemMeta":{"systemName":null,"subSystemName":null},"description_eng":"Tire pressure monitor module","description_fre":"Module de surveillance de la pression des pneus","description_ger":"Reifendrucküberwachung","description_spa":"Módulo de control de la presión de los neumáticos","description_ita":"Modulo monitor di pressione pneumatico","description_tur":"Lastik basıncı izleme modülü"},{"code":"B124D","description":"Sensor, tyre pressure","faultInformations":[{"description":"---"},{"description":"TRUE","description_eng":"TRUE","description_fre":"TRUE","description_ger":"TRUE","description_spa":"TRUE","description_ita":"TRUE","description_tur":"TRUE"}],"freezeFrames":[],"enhancedDtcInfos":[],"status":"ACTIVE","system":"MULTIFUNCTION","systemMeta":{"systemName":null,"subSystemName":null},"description_eng":"Sensor, tyre pressure","description_fre":"Capteur, pression des pneus","description_ger":"Sensor Reifendruck","description_spa":"Sensor de presión del neumático","description_ita":"Sensore, pressione pneumatici","description_tur":"Sensör, lastik hava basıncı"}]` = c("B1182", 
"B124D"), `[{"code":"B1182","description":"Tire pressure monitor module","faultInformations":[{"description":"---"},{"description":"TRUE","description_eng":"TRUE","description_fre":"TRUE","description_ger":"TRUE","description_spa":"TRUE","description_ita":"TRUE","description_tur":"TRUE"}],"freezeFrames":[],"enhancedDtcInfos":[],"status":"ACTIVE","system":"MULTIFUNCTION","systemMeta":{"systemName":null,"subSystemName":null},"description_eng":"Tire pressure monitor module","description_fre":"Module de surveillance de la pression des pneus","description_ger":"Reifendrucküberwachung","description_spa":"Módulo de control de la presión de los neumáticos","description_ita":"Modulo monitor di pressione pneumatico","description_tur":"Lastik basıncı izleme modülü"},{"code":"B124D","description":"Sensor, tyre pressure","faultInformations":[{"description":"---"},{"description":"TRUE","description_eng":"TRUE","description_fre":"TRUE","description_ger":"TRUE","description_spa":"TRUE","description_ita":"TRUE","description_tur":"TRUE"}],"freezeFrames":[],"enhancedDtcInfos":[],"status":"ACTIVE","system":"MULTIFUNCTION","systemMeta":{"systemName":null,"subSystemName":null},"description_eng":"Sensor, tyre pressure","description_fre":"Capteur, pression des pneus","description_ger":"Sensor Reifendruck","description_spa":"Sensor de presión del neumático","description_ita":"Sensore, pressione pneumatici","description_tur":"Sensör, lastik hava basıncı"}]` = c("B1182", 
"B124D")), .Names = c("[{\"code\":\"B1182\",\"description\":\"Tire pressure monitor module\",\"faultInformations\":[{\"description\":\"---\"},{\"description\":\"TRUE\",\"description_eng\":\"TRUE\",\"description_fre\":\"TRUE\",\"description_ger\":\"TRUE\",\"description_spa\":\"TRUE\",\"description_ita\":\"TRUE\",\"description_tur\":\"TRUE\"}],\"freezeFrames\":[],\"enhancedDtcInfos\":[],\"status\":\"ACTIVE\",\"system\":\"MULTIFUNCTION\",\"systemMeta\":{\"systemName\":null,\"subSystemName\":null},\"description_eng\":\"Tire pressure monitor module\",\"description_fre\":\"Module de surveillance de la pression des pneus\",\"description_ger\":\"Reifendrucküberwachung\",\"description_spa\":\"Módulo de control de la presión de los neumáticos\",\"description_ita\":\"Modulo monitor di pressione pneumatico\",\"description_tur\":\"Lastik basıncı izleme modülü\"},{\"code\":\"B124D\",\"description\":\"Sensor, tyre pressure\",\"faultInformations\":[{\"description\":\"---\"},{\"description\":\"TRUE\",\"description_eng\":\"TRUE\",\"description_fre\":\"TRUE\",\"description_ger\":\"TRUE\",\"description_spa\":\"TRUE\",\"description_ita\":\"TRUE\",\"description_tur\":\"TRUE\"}],\"freezeFrames\":[],\"enhancedDtcInfos\":[],\"status\":\"ACTIVE\",\"system\":\"MULTIFUNCTION\",\"systemMeta\":{\"systemName\":null,\"subSystemName\":null},\"description_eng\":\"Sensor, tyre pressure\",\"description_fre\":\"Capteur, pression des pneus\",\"description_ger\":\"Sensor Reifendruck\",\"description_spa\":\"Sensor de presión del neumático\",\"description_ita\":\"Sensore, pressione pneumatici\",\"description_tur\":\"Sensör, lastik hava basıncı\"}]", 
"[{\"code\":\"B1182\",\"description\":\"Tire pressure monitor module\",\"faultInformations\":[{\"description\":\"---\"},{\"description\":\"TRUE\",\"description_eng\":\"TRUE\",\"description_fre\":\"TRUE\",\"description_ger\":\"TRUE\",\"description_spa\":\"TRUE\",\"description_ita\":\"TRUE\",\"description_tur\":\"TRUE\"}],\"freezeFrames\":[],\"enhancedDtcInfos\":[],\"status\":\"ACTIVE\",\"system\":\"MULTIFUNCTION\",\"systemMeta\":{\"systemName\":null,\"subSystemName\":null},\"description_eng\":\"Tire pressure monitor module\",\"description_fre\":\"Module de surveillance de la pression des pneus\",\"description_ger\":\"Reifendrucküberwachung\",\"description_spa\":\"Módulo de control de la presión de los neumáticos\",\"description_ita\":\"Modulo monitor di pressione pneumatico\",\"description_tur\":\"Lastik basıncı izleme modülü\"},{\"code\":\"B124D\",\"description\":\"Sensor, tyre pressure\",\"faultInformations\":[{\"description\":\"---\"},{\"description\":\"TRUE\",\"description_eng\":\"TRUE\",\"description_fre\":\"TRUE\",\"description_ger\":\"TRUE\",\"description_spa\":\"TRUE\",\"description_ita\":\"TRUE\",\"description_tur\":\"TRUE\"}],\"freezeFrames\":[],\"enhancedDtcInfos\":[],\"status\":\"ACTIVE\",\"system\":\"MULTIFUNCTION\",\"systemMeta\":{\"systemName\":null,\"subSystemName\":null},\"description_eng\":\"Sensor, tyre pressure\",\"description_fre\":\"Capteur, pression des pneus\",\"description_ger\":\"Sensor Reifendruck\",\"description_spa\":\"Sensor de presión del neumático\",\"description_ita\":\"Sensore, pressione pneumatici\",\"description_tur\":\"Sensör, lastik hava basıncı\"}]", 
"[{\"code\":\"B1182\",\"description\":\"Tire pressure monitor module\",\"faultInformations\":[{\"description\":\"---\"},{\"description\":\"TRUE\",\"description_eng\":\"TRUE\",\"description_fre\":\"TRUE\",\"description_ger\":\"TRUE\",\"description_spa\":\"TRUE\",\"description_ita\":\"TRUE\",\"description_tur\":\"TRUE\"}],\"freezeFrames\":[],\"enhancedDtcInfos\":[],\"status\":\"ACTIVE\",\"system\":\"MULTIFUNCTION\",\"systemMeta\":{\"systemName\":null,\"subSystemName\":null},\"description_eng\":\"Tire pressure monitor module\",\"description_fre\":\"Module de surveillance de la pression des pneus\",\"description_ger\":\"Reifendrucküberwachung\",\"description_spa\":\"Módulo de control de la presión de los neumáticos\",\"description_ita\":\"Modulo monitor di pressione pneumatico\",\"description_tur\":\"Lastik basıncı izleme modülü\"},{\"code\":\"B124D\",\"description\":\"Sensor, tyre pressure\",\"faultInformations\":[{\"description\":\"---\"},{\"description\":\"TRUE\",\"description_eng\":\"TRUE\",\"description_fre\":\"TRUE\",\"description_ger\":\"TRUE\",\"description_spa\":\"TRUE\",\"description_ita\":\"TRUE\",\"description_tur\":\"TRUE\"}],\"freezeFrames\":[],\"enhancedDtcInfos\":[],\"status\":\"ACTIVE\",\"system\":\"MULTIFUNCTION\",\"systemMeta\":{\"systemName\":null,\"subSystemName\":null},\"description_eng\":\"Sensor, tyre pressure\",\"description_fre\":\"Capteur, pression des pneus\",\"description_ger\":\"Sensor Reifendruck\",\"description_spa\":\"Sensor de presión del neumático\",\"description_ita\":\"Sensore, pressione pneumatici\",\"description_tur\":\"Sensör, lastik hava basıncı\"}]"
))

When I print(df) I see:

$...
[1] "B1182" "B124D"

$...
[1] "B1182" "B124D"

$...
[1] "B1182" "B124D"

You can observe that it is a nested and list that comes from extracting a field with .

Anyway, I would like to transform this result in a dataframe formed by three rows. Furthermore, I would like to remove all extra info and keep exclusively the previous codes. How can I do it?

Appreciate your help.

EDIT

My original df contains more than 2000 elements in the list. Not all of these elements have two values, some of them don't have any, and others have more than two.

Imagine I print six elements (instead of three as before) with this output:

$...
[1] "B1182" "B124D"

$...
[1] "B1182" "B124D"

$...
[1] "B1182" "B124D"

$`[]`
NULL

$...
[1] "B1182" "B124D" "B365A"

$...
[1] "B1182" "B124D"

Here is the code, obtained after running dput() for the first twenty elements of the list:

df <- list(c("B1182", "B124D"), c("B1182", "B124D"), c("B1182", "B124D"
), c("B1182", "B124D"), c("B1182", "B124D"), c("B1182", "B124D"
), c("B1182", "B124D"), c("B1182", "B124D"), NULL, NULL, c("B1182", 
"B124D"), c("B1182", "B124D"), c("B1182", "B124D"), NULL, NULL, 
    NULL, NULL, c("P2000", "P2000", "U3003", "P2000"), c("P2000", 
    "P2000", "U3003", "P2000"), NULL)

How could we proceed in this more complicated case?

Improve this question
6
  • In which way? I properly copied/pasted the example. Commented Apr 2, 2020 at 9:09
  • Running your df <- structure(...) call gives a whole bunch of errors. Commented Apr 2, 2020 at 9:34
  • Seems to be a problem with unescaped characters. Commented Apr 2, 2020 at 9:52
  • I am going to try to get them again Commented Apr 2, 2020 at 10:12
  • I have just pasted the code. I tested it before copying and it worked for me. Commented Apr 2, 2020 at 10:26

1 Answer 1

Reset to default
1

Since the names are huge we can remove the names, then replace the NULL elements with NA and row bind the data. 

names(df) <- NULL
df[sapply(df, is.null)] <- NA
dplyr::bind_rows(lapply(df, function(x) 
         as.data.frame(t(x), stringsAsFactors = FALSE)))

#      V1    V2    V3    V4
#1  B1182 B124D  <NA>  <NA>
#2  B1182 B124D  <NA>  <NA>
#3  B1182 B124D  <NA>  <NA>
#4  B1182 B124D  <NA>  <NA>
#5  B1182 B124D  <NA>  <NA>
#6  B1182 B124D  <NA>  <NA>
#...
Improve this answer
Sign up to request clarification or add additional context in comments.

13 Comments

In my original df I haver more than 2000 elements in the list. Some of these elemtents contain more than two values and others don't have any. I realized that those with none values, are omitted when do.call, and when there are more than two, it throws an error. Could you please edit the code to implement these features?
I edited my question adding a more complicated case (which is closer to my original df). Hope this helps
@antecessor Can you add data using dput ?
I am getting a lot of troubles, as the names exceed 10000 bytes when dputting it...
if you don't need the names then you can remove it. Do names(df) <- NULL
|

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.