Convert cell-array to array-of-cells, for array-of-struct creation?

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Hi, how can I convert a cell-array to an array-of-cells?
I have (following a file textscan) a cell array of format:
Fr = [{uint8([1;2;3])}, {uint32([4;5;6])}, {[7;8;9]}]
And need to get to this array of cells:
To = [{Fr{1,1}(1), Fr{1,2}(1), Fr{1,3}(1)} ;...
{Fr{1,1}(2), Fr{1,2}(2), Fr{1,3}(2)} ;...
{Fr{1,1}(3), Fr{1,2}(3), Fr{1,3}(3)}]
..without having to loop (Fr can be large) through Fr.
The reason is that I want an array-of-struct, rather than struct-of-array. Reference:
Incorrect = cell2struct(Fr,{'f1','f2','f3'},2)
Correct = cell2struct(To,{'f1','f2','f3'},2)

Accepted Answer

Andrei Bobrov
Andrei Bobrov on 18 Jun 2014
Fr = [{uint8([1;2;3])}, {uint32([4;5;6])},...
{[7;8;9]}, {uint8([11,12;13,14;15,16])}];
To = cellfun(@(x)num2cell(x,2),Fr,'un',0);
out = [To{:}];
  6 Comments
Azzi Abdelmalek
Azzi Abdelmalek on 18 Jun 2014
Sorry Andrei, I didn't read completly the explanation given by Bjoern. There is no doubt about your result, I misunderstood the new question.
Bjoern
Bjoern on 19 Jun 2014
Excellent, thanks a lot! Just FYI for other users:
This proposal is about 60% quicker than Cedric's proposal. Both produced the same result :)

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More Answers (2)

Cedric
Cedric on 17 Jun 2014
To = cellfun( @(cc)num2cell(cc), Fr, 'UniformOutput', false ) ;
To = [To{:}] ;
  6 Comments
Cedric
Cedric on 18 Jun 2014
See Andrei's answer, NUM2CELL can take a second "dim" argument and I didn't know that!

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Azzi Abdelmalek
Azzi Abdelmalek on 17 Jun 2014
Edited: Azzi Abdelmalek on 17 Jun 2014
To=num2cell([Fr{:}])
  4 Comments
Bjoern
Bjoern on 17 Jun 2014
Thanks once again! Please see the comment (for Cedric) on me missing to mention an important fact. It looks like your proposal removes the last column.
Azzi Abdelmalek
Azzi Abdelmalek on 18 Jun 2014
Fr = [{uint8([1;2;3])}, {uint32([4;5;6])},...
{[7;8;9]}, {uint8([11,12;13,14;15,16])}]
mm=cellfun(@(x) size(x,2),Fr)
nn=1:numel(mm)
r=size(Fr{1},1)
dd=cell2mat(arrayfun(@(x,y) [1:x;y*ones(1,x)],mm,nn,'un',0))
[i1,j1]=meshgrid(dd(1,:),1:r)
[i2,j2]=meshgrid(dd(2,:),1:r)
out=arrayfun(@(x,y,z) Fr{x}(y,z),i2,j1,i1,'un',0)

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