Vertically Concatenate Cells with Same Number of Columns

I have a column of cells (column_data.png) with different number of rows but same number of columns. The cells contain numbers only. How can I vertically concatenate the cells in column_data?

Answer 1

[Star Strider]

I’m not sure what you want. Does this work for you?

data_final = { {rand(1,5)}; {rand(2,5)}; {rand(3,5)} };
data_cat = cellfun(@vertcat, data_final);

[Eli Dim]

The data_start is the starting cell array that I have and the data_final is the vertically concatinated cell array that I would like to have. I am afraid the code you suggested does not work in this case.

[Star Strider]

I needed a loop, but this works:

DF = {};
for k1 = 1:length(data_start)
    if ~isempty(data_start{k1})
        DF = vertcat(DF, data_start{k1});
    end
end

Here, ‘DF’ is ‘data_final’. I didn’t want to overwrite it so I could check it.

Answer 2

[Azzi Abdelmalek]

cell2mat(YourCellArray)

Or Maybe your data looks like

a={num2cell(rand(2,3));num2cell(rand(1,3));num2cell(rand(4,3))};
out=cell2mat(cellfun(@(x) cell2mat(x),a,'un',0))

[Eli Dim]

The first option does not work because I have cells inside.

I want to do the equivalent of:

vertcat(data_final{1,1},data_final{2,1},data_final{3,1},data_final{4,1},....data_final{lastrow,1})

I want to keep the cells and not convert them using cell2mat

[Azzi Abdelmalek]

a={num2cell(rand(2,3));num2cell(rand(1,3));num2cell(rand(4,3))}
b=cat(1,a{:})