How to Index Substructure

I am trying to index a field in a substructure of a structure. The main structure is supermarket

the next structure is produceList

the field i wish to call from produceList is minNumber

I tried supermarket.produceList{i}.minNumber

I need the {i} to allow the for loop to work

for i = 1:length(supermarket.produceList)

It gives me the error Dot indexing is not supported for this type of variable.

I know i can index with specific elements in the structure such as supermarket.Apples.minNumber. However, this prevents me from testing it for each element of substructure produceList

Answer 1

[Guillaume]

I'd recommend you use numel instead of length, it's safer.

Structure indexing uses () not {} (that's to acces cell arrays and tables content), so:

supermarket.produceList(i).minNumber

Your blurb about supermarket.Apples is confusing. Is the substructure a structure array named produceList or a bunch of scalar structures with different names? The latter would require a completely different approach.