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containers.Map: The number of keys and values must be the same

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I have the above mentioned issue when I try to run this code:
keys = [DS.UserNum];
valueSet = [DS.CarNum];
M = containers.Map(keys,valueSet)
UserNum Car Num
1 [123,257,345,235,553]
2 834
3 [111,156]
4 [111,445,642,164]
5 []
--> The number of keys and values must be the same. How can I correct that.

Respuesta aceptada

Walter Roberson
Walter Roberson el 6 de Mayo de 2022
valueSet = {DS.CarNum};
  2 comentarios
Mehdi Jaiem
Mehdi Jaiem el 7 de Mayo de 2022
Thank ! that was it. But this is weird as on the mathwork website you got the following format
keySet = {'Jan','Feb','Mar','Apr'};
valueSet = [327.2 368.2 197.6 178.4];
M = containers.Map(keySet,valueSet)
keySet is put between {} and valueSet between []
Walter Roberson
Walter Roberson el 7 de Mayo de 2022
In that example, the keys are character vectors, and the values are scalar numeric. Character vectors are collections of characters.
In your code, the keys are scalar numeric, and the values are vectors of numeric — collections of numbers.
In both cases, collections use {} and scalars use []

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