Processing data from loop

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Eliska Paulikova
Eliska Paulikova 2022-11-8
编辑： Voss 2022-11-8
Hello I have a problem, I have a video which I cut into many frames I apply on them segmentation and I get x and y values from them. So now I have triple loop cycle, and every single round it gives me x and y for one frame --> but I would like to make table or something where I can store data, for every single frame.
Now If I do it I get so many tables or I get one with data only from the last frame --> but I would like to have one table and in it has values from every frames.
How can I do that. Is there any function?
Thank you so much.

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回答（1 个）

Voss
Voss 2022-11-8
编辑：Voss 2022-11-8
Ran in:
% empty table with two variables, X and Y:
t = table([],[],'VariableNames',{'X' 'Y'})
t = 0×2 empty table
Nframes = 3;
% for each frame ...
for ii = 1:Nframes
% ... append a row to the table, containing the X and Y for this frame
% (using random numbers here):
t(end+1,:) = {rand() rand()}
end
t = 1×2 table
X Y ________ _______ 0.015738 0.69204
t = 2×2 table
X Y ________ _______ 0.015738 0.69204 0.82888 0.60574
t = 3×2 table
X Y ________ _______ 0.015738 0.69204 0.82888 0.60574 0.75563 0.57025

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