MATLAB: How can I multiply a vector by scalar

scalar multiplication

Hi, I have a very simple case. I do not know why there is an error which says, (Undefined operator '*' for input arguments of type 'cell').C1 is a [1*44998] and k=[1*300] vectors. my purpose is to calculate the vector of sss in which a scalar value of 2.7 is multiplied by vector C (which has a size [1*300]. any help would be appreciated.
k=find(c1==1);
time1=t(k);
i=diff(k);
j=find(i>1);
j=[0,j];
n=length(j);
for m=1:n-1;
  I{m}=k(j(m)+1:j(m+1))
  time{m}=t(I{m})
  initial_time{m}=time{m}(1)
  final_time{m}=time{m}(end)
end
I{m+1}=k(j(end)+1:end)
time{m+1}=t(I{m+1})
initial_time{m+1}=time{m+1}(1)
final_time{m+1}=time{m+1}(end)
C = cellfun(@minus,final_time,initial_time,'UniformOutput',false)
sss=C*2.7;

Best Answer

A cell array is a special type of "container", which you cannot do all operations on. You need to use a numeric array for numerical operations. Depending on the contents of C, you might just be able to do
C_num = cell2mat(C)
and carry out your operations on that.
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