How can I find the threshold for a structure array?

5 views (last 30 days)
Hello all,
I want to find the threshold for various trials, contained in the structure "Target_Tr.". I have previously calculated the max value (X and Y) of the baseline. I would like to have as result a structure array containing the values after the threshold. I wrote this code, but the system gives me back the error message "Undefined operator '>' for input arguments of type 'struct'. What am I doing wrong?
Thank you very much
clear a
for a = 1:length(fields_trials)
Threshold_Target_X.(['a_' int2str(a)])=find([Target_Tr.(fields_trials{a})]>Target_Max_Y);

Accepted Answer

Orion on 6 Apr 2016
Without knowing what your data looks like, it's hard to answer.
I tried this code and it works :
Target_Tr.s1 = rand(10,1);
Target_Tr.s2 = rand(10,1);
fields_trials = fieldnames(Target_Tr);
Target_Max_Y = 0.6;
clear a
for a = 1:length(fields_trials)
Threshold_Target_X.(['a_' int2str(a)]) = find([Target_Tr.(fields_trials{a})]>Target_Max_Y);
Does your structure Target has only "direct" subfields ( Target_Tr.s1 , Target_Tr.s2,...) ?
Because if you have somethig like
Target_Tr.s3.s1 = rand(10,1); % subfield of field
then the error message makes sense.
Fabio Castro
Fabio Castro on 8 Apr 2016
I don't know why, but if I close and re start the matlab, then it works.
Thank you very much for the help!

Sign in to comment.

More Answers (0)


Find more on Structures in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!