How to convert cell to matrix with different size of cell

I have 10 cell and want to convert it to matrix but I am getting error Dimensions of arrays being concatenated are not consistent.

Movav_data1=cell2mat(Movav_data);

[Jan]

The error message is clear: You can concatenate only arrays with matching dimensions. What are the sizes of the cell elements? What do you expect as output?

Answer 1

[Cameron]

Well the size of the data isn't the same. In the first cell, it is 6,760 rows and the second is 6,761 rows. So it can't combine the two. It would be like doing this

a = [1;2;3];
b = [1;2;3;4];
[a,b] %this gives an error

What are you trying to do with this? You can prepopulate an array with NaNs and fill in your data like this

%loop through to find the largest data set in your cell array
maxRows = 1; 
for xx = 1:length(Movav_data)
    if length(Movav_data{xx}) > maxRows
        maxRows = length(Movav_data{xx});
    end
end

NewArray = nan(maxRows,length(Movav_data)); %make NaN array

%loop through your cell array and paste data into NaN array
for yy = 1:length(Movav_data)
    NewArray(1:length(Movav_data{yy}),yy) = Movav_data{yy};
end

[Kiran Isapure]

I am trying to index first element, where its greater than ethreshold

activation= find(Movav_data >= ethreshold,1);

But i am not able to index the first element with above line of code