matlab - cell2mat: padding using NaNs -

working in 2 dimensions cell arrays familiar topic you:

a{1,1}=rand(5,1); a{2,1}=rand(10,1); b=cell2mat(a); size(b)  

the output of size of [15 1]. find example outcome more useful:

0.150   0.340   0.610   0.190   0.740   nan     nan     nan     nan     nan 0.240   0.920   0.270   0.770   0.190   0.290   0.090   0.580   0.680   0.550 

is there generalized way of padding cellarrays nans (in similar way above) can converted matrices easily?

as there lot of confusion here's graphically (please excuse handdrawing skills) mean, 1,2 depict cell arrays , 3 nan padding. 1,2,3 combined hould convertable matrix.

% find long vector islong=(length(a{2,1})>length(a{1,1}))+1; isshort=setdiff([1 2],islong);  % result b=[a{islong,1}  [a{isshort,1};nan(length(a{islong,1})-length(a{isshort,1}),1)]]    b =  0.0796    0.6440 0.7326    0.4967 0.5137    0.9919 0.5223    0.7241 0.8144    0.3799 0.8346       nan 0.9469       nan 0.4866       nan 0.1802       nan 0.1786       nan