MATLAB Answers

Loop and write into a cell

1 view (last 30 days)
Mark F
Mark F on 4 Apr 2020
Edited: ME on 4 Apr 2020
Hello, i wanna accumulate the data in my script with a loop
l=[1,2,3,4,5,6,7,8,9,10]
S=[42600 35000 91850 20000 41060 30000 63100 10000 38500 30000]';
P=[65 840 50 176 48 638 14 130 32 45]';
X=S .* P;
sort(X,'descend');
a=sum(X);
p=cell(10,1);
c=cell(10,1);
for k=1:10
p{k}= (X(k)/a)*100
end
for k=1:10
c{k}=sum(p(1:,k) 1))
end
In this loop i wanna accumulate my data p and write it to the cell c.
for k=1:10
c{k}=sum(p(1:,k) 1))
end
But i get the error:
c{k}=sum(p(1:,k) 1))
Error: Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched
delimiters.
What is wrong here?

  0 Comments

Sign in to comment.

Answers (1)

ME
ME on 4 Apr 2020
Edited: ME on 4 Apr 2020
This part of your code:
for k=1:10
c{k}=sum(p(1:,k) 1))
end
has two open (left) brackets and three close (right) brackets - so you have mismatched delimiters as suggested in your error message.

  5 Comments

Show 2 older comments
Mark F
Mark F on 4 Apr 2020
Ok, i have tried this:
for k=1:10
c{k}=sum(p,1)
end
But know i have this error:
Error using sum
Invalid data type. First argument must be numeric or logical.
p is in my script a cell.
ME
ME on 4 Apr 2020
I’m not sure but then you probably need to swap to:
for k=1:10
c{k}=sum(p{1:,k}, 1)
end
ME
ME on 4 Apr 2020
You might just need to be careful with the data type of p. If you use ‘class()’ then you can check what data type your p commands are. You can then look up the Matlab documentation online for the acceptable classes for the sum command.

Sign in to comment.

Tags

Community Treasure Hunt

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

Start Hunting!