Adding elements to an array

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评论: Gonzalo Mata ,2018-11-22
Ok, so how do you place elements of one array into another array, so that they are included in either the beginning of the array or the end of the array?


topdawgnate 2011-9-21
编辑:MathWorks Support Team 2018-11-8
There are many ways to join elements of two arrays. For example, let’s say you have two 2-by-2 matrices A and B:
A = [1 2; 3 4];
B = [5 6; 7 8];
Then the following commands concatenate B to the end of A horizontally:
H1 = [A B]
H2 = horzcat(A,B)
H3 = cat(2,A,B)
The first argument in the cat function (2) tells it to add B as additional columns of A.
These commands concatenate B to the end of A vertically:
V1 = [A; B]
V2 = vertcat(A,B)
V3 = cat(1,A,B)
The 1 tells cat to add B as additional rows of A.
For additional concatenation examples, see:

更多回答(1 个)

YU-CHENG HUANG 2017-9-29
just using c = [a , b]
ex: a = [1 2 3] b = [4 5 6] c = [a,b]
--> c = [1 2 3 4 5 6]

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