getfield() error when calling on multiple fields: "Struct contents reference from a non-struct array object"

Question

camilo sanchez 2018-1-25

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/379017-getfield-error-when-calling-on-multiple-fields-struct-contents-reference-from-a-non-struct-array

评论： Walter Roberson 2018-1-26

Hello,

I have searched around for a good couple of hours but I cannot figure out how to properly use getfield() to call on multiple fields.

What works:

   getfield(MyStruct(8), 'field1') 
   or
   getfield(MyStruct(8), 'field2')

Whwat does NOT work:

getfield(MyStruct(8), 'field1', 'field2')

Among many other variations... I have tried specific indexing, so on and so forth. MyStruct is a 1X44 with 10 fields.

Thanks in advance!

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Brandon Madsen 2018-1-25

This function is genuinely buggy and does not work as advertised. You can pull up the code and fix it manually for your machine though, since the code for this function is accessible. I can show you how later if you need help.

camilo sanchez 2018-1-26

I could look into that, even though I have never tried to edit a native function.

Anythign specific to watchout for when approaching this task?

Thanks!

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Answer 1

Nicolas Schmit 2018-1-26

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/379017-getfield-error-when-calling-on-multiple-fields-struct-contents-reference-from-a-non-struct-array#answer_301822

Which version of MATLAB are you using? The documentation says that getfield() can access nested fields, not that you can retrieve multiple fields at a time.