Undefined operator '*' for input arguments of type 'cell'

I am getting this error-"Undefined operator '*' for input arguments of type 'cell'".

for i=1:length(matrix.rxnIDs)

if strcmp(matrix.mettype(i),'reactant')

matrix.metcoef(i) = matrix.metcoef(i).*-1;

end

end

Answer 1

[Stephen23]

matrix.metcoef{i} = matrix.metcoef{i} .* -1
matrix.metcoef{i} = -matrix.metcoef{i}; % SIMPLER
%             ^ ^                  ^ ^ Use the correct brackets

Read about the different ways to access cell arrays:

https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-cell-array.html

Remember:

• () parentheses access the cells themselves.
• {} curly braces access the cell contents.

[yao lu]

Thanks for your help!