Why am I getting this error? "Argument to dynamic structure reference must evaluate to a valid field name."

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Andre Holder 2019-9-12

0
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https://ww2.mathworks.cn/matlabcentral/answers/480032-why-am-i-getting-this-error-argument-to-dynamic-structure-reference-must-evaluate-to-a-valid-field

关闭： MATLAB Answer Bot 2021-8-20

I'm simply trying to print a string name for a file I'm importing, and I get this error when I use fprintf: "Argument to dynamic structure reference must evaluate to a valid field name." Here's my code:

%% Import the data files
dr = dir('C:\Users\d-r\Box Sync\DATA\MAIN\training\*psv');
data=[];
for k=1:numel(dr)
    data{k,1}.encounter_num = k;
    data{k,1}.labs = importData([dr(k).folder filesep dr(k).name]);
    data{k,1}.vitals = importData([dr(k).folder filesep dr(k).name]);
    fprintf('Importing %s\n',dr.(k).name)
end