Index exceeds matrix dimensions Error

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Cory Morales
Cory Morales 2015-6-29
评论： Cory Morales 2015-6-29
Hello
I am trying to access data from a document and the data gets imported correctly. The array for data is a 20 x 20 size array, but when I try to access row 2, it gives the index exceeds matrix dimensions error.
Here is my code:
figure(1);
markers=['+' 'o' '*' '.' 'x' 's' 'd' '^' 'v' '<' '>' 'p' 'h'];
location = 1;
disp(size(data()));
for i=1:num_trials
for j=1:num_sensors
col = 5 + (j-.5) * 2;
plot(location * ones(size(data(:,col,i))),data(:,col,i),'.'); hold on;
end
location = location+1;
end
grid on;
The specific line generating the error is: plot(location * ones(size(data(:,col,i))),data(:,col,i),'.'); hold on;

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James Tursa
James Tursa 2015-6-29
If "data" is 20x20, why are you indexing into it as a 3D array? E.g.,
data(:,col,i)
What are the values of num_trials and num_sensors? That could be another source of problems.
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James Tursa
James Tursa 2015-6-29
If class(data) returns 'double', what does the phrase "struct with fields that are cell arrays that contain double arrays" mean specifically?
Cory Morales
Cory Morales 2015-6-29
Actually, I think it works now. Thanks!

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