Grouping matrices under a

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Craig
Craig 2013-9-11
Hi,
So it is straight forward to do the following,
A = [2; 6; 7; 8; 6]
B = [7; 1; 6; 3; 4; 9; 8]
C= [A;B] = [2; 6; 7; 8; 6; 7; 1; 6; 3; 4; 9; 8]
Assume that I have several of these matrices that I need to "group". How can I write some code which will do the above but be flexible enough to recognise how many matrices I need to group (the number will vary).
Hope that makes sense.
Craig

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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2013-9-11
编辑：Azzi Abdelmalek 2013-9-11
vertcat(A,B)
If you have many arrays. For example
a=[]
for k=1:10
x=(1:k)'
a=vertcat(a,x)
end
%or
vertcat(a,b,c,d)
  2 个评论
Craig
Craig 2013-9-11
perfect thanks!
Jan
Jan 2013-9-11
While loop suffers from a missing pre-allocation, using VERTCAT is clean and clear.

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更多回答（1 个）

Image Analyst
Image Analyst 2013-9-11
If you use a function to do the stitching, then look at nargin - it will tell you how many input arguments you have, and then varargin will be a cell array with however many arguments you passed in. Then you can loop over that, extracting and stitching as needed.
  1 个评论
Image Analyst
Image Analyst 2013-9-11
For example
stitched1 = myStitch(a,b); % Stitch 2 matrices.
stitched2 = myStitch(a,b,c,d,e,f,g,h); % Stitch 8 matrices.

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