Reading data file with rows of variable sizes

Question

I have a data file containing rows of variable sizes:

16 54 1 -3 5
15 5
1 9 10 5

How can I load it into a cell array data so that

data{1} = [16 54 1 -3 5]; 
data{2} = [15 5]; 
data{3} = [1 9 10 5];

?

Answer 1

Let data.txt contains

16 54 1 -3 5
15 5
1 9 10 5

You can read it into a cell array data with the following:

fid = fopen('datatest.txt');
allData = textscan(fid,'%s','Delimiter','\n');
data = cellfun(@str2num, allData{1}, 'UniformOutput', false);
fclose(fid);

>> data = 

ans =    

[1x5 double]
[1x2 double]
[1x4 double]

>> data{1}

ans =

    16    54     1    -3     5