Rename a struct with a fieldname of another struct

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Jan
Jan on 25 Aug 2022
Commented: Jan on 25 Aug 2022
Hi, I want to load a struct and the name of the struct is for example 'abc' and after that i want to load some fields of the struct like
data_array(1) = abc.data_1
data_array(2) = abc.data_2
but now my problem is that the struct isn't allways called abc...
so i want to use the name of the struct however it's called to load data_1 and data_2 in this case
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Answers (1)

Robert U
Robert U on 25 Aug 2022
Hi Jan,
it is good practice to load external data into a structure array such that the variable name is connected to the actual function/script whereas the top fieldname is the name of the saved struct. Then, you can use fieldnames()-command to retrieve the name of the loaded struct and continue work on that.
inputStruct = load(myFilename) % load file
fieldsInputStruct = fieldnames(inputStruct) % retrieve the name of the saved struct
inputStruct.(fieldsInputStruct{1}) % use dynamic expressions to address the fieldnames
See for more information:
Kind regards,
Robert
  2 Comments
Stephen23
Stephen23 on 25 Aug 2022
Assuming only one variable per MAT file:
C = struct2cell(load(..))
M = C{1}

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