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loading multiple groundtruth .mat files

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Matpar
Matpar on 13 Apr 2020
Edited: Stephen Cobeldick on 14 Apr 2020
Hi and good day to all,
I have 8 ground truth labelled .mat files from videos done by the matlab labeller.
I am trying to load such and I am uncertain of the next move.
Can a profession assist me please?
I have gotten this far with google, here's my code!
Thank you in advance!!
filenames = {'Beat1GTruth.mat','Beat2GTruth.mat','Fight1GTruth.mat','Fight2GTruth.mat','Shoot1GTruth.mat'...
,'Shoot2GTruth.mat','Stab1GTruth.mat','Stab2GTruth.mat'};
for kk = 1:numel(filenames)
load(filenames{kk})
end

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Answers (1)

Stephen Cobeldick
Stephen Cobeldick on 13 Apr 2020
Edited: Stephen Cobeldick on 13 Apr 2020
Always load into an output variable (which is a scalar structure), e.g.:
F = {'Beat1GTruth.mat', 'Beat2GTruth.mat', 'Fight1GTruth.mat', 'Fight2GTruth.mat', 'Shoot1GTruth.mat', 'Shoot2GTruth.mat', 'Stab1GTruth.mat', 'Stab2GTruth.mat'};
N = numel(F);
C = cell(1,N);
for kk = 1:N
S = load(F{kk}); % load into a structure
% you can do anything with the structure contents, e.g.:
C{kk} = S.somefield; % !!! use an appropriate fieldname !!!
end
See also:

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Matpar
Matpar on 13 Apr 2020
Hi Stephen Cobeldick and thank you for the advice I am grateful loads,
I am not sure how to do that but with trial research and my will I may get there, but i will welcome you teachings if you can demonstrate such with a link please!
In reference to your guidance,
Ok now this had no error running the operations.
I am seeing the S 1x1 struct variable in the workspace but there is only one field Stab2GTruth!!
Shouldn't I see the rest of the data file/field names from the other ,mat files loaded from the variable (F)!!???!!?? instead it is showing 8field with 1x1 groundTruth?!!!?!!
Stephen Cobeldick
Stephen Cobeldick on 13 Apr 2020
You do not appear to be running the complete code from my last comment.
Pease run the complete code that I gave, including the last line:
T = [C{:}];
T will then be a 1xN structure with two fields, it contains all of the data from all of your files.
Matpar
Matpar on 14 Apr 2020
I did see it and I ran it just as is!! that is what is confusing me!
I got to the step of training the cnn objectdetector but it came back with an error about the groundtruths not being in the right format!!
I am learning and it is fun! but not so much fun when I am stuck and not knowing nor understanding the full processes to move forward!
Please help!
and thank you in advance pal!

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