Concatenate a column of cells into a single array

2 views (last 30 days)
Hello,
I have a cell containing multiple arrays that I want to concatenate into a single array such that X{1}, X{2},... are all each a 100x1 double. I am hoping for a non looping solution that will put them all together into a single array that is 100xlength(X). I have tried using cat(), vertcat() and others but keep getting the error that 'dimensions of arrays being concatenated are not consistent.' Any help is greatly appreciated, thanks!
  1 Comment
Corey Pew
Corey Pew on 16 Apr 2019
Update, I mistyped my format. My cell array is actually a column of cells such that:
>> X = { rand(4,1); rand(4,1); rand(4,1) }
X =
3×1 cell array
{4×1 double}
{4×1 double}
{4×1 double}
Both answers below work if you first transpose X:
>> X = X';
Thank you for the help!

Sign in to comment.

Accepted Answer

madhan ravi
madhan ravi on 15 Apr 2019
cell2mat(X)

More Answers (1)

per isakson
per isakson on 15 Apr 2019
cat() is also a possiblity
Y = cat( 2, X{:} );
Example
>> X = { rand(4,1), rand(4,1), rand(4,1) }
X =
1×3 cell array
{4×1 double} {4×1 double} {4×1 double}
>> cat( 2, X{:} )
ans =
0.8147 0.6324 0.9575
0.9058 0.0975 0.9649
0.1270 0.2785 0.1576
0.9134 0.5469 0.9706
>>
  1 Comment
Corey Pew
Corey Pew on 16 Apr 2019
Thank you for the excellent example. Seeing it this way helped me realize I needed to transpose X to get the desired result.

Sign in to comment.

Categories

Find more on Creating and Concatenating Matrices in Help Center and File Exchange

Products


Release

R2018a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!