How to insert an element into matrix?

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George Ansari
George Ansari am 22 Aug. 2017
Kommentiert: Image Analyst am 14 Okt. 2020
Suppose I have a matrix A = ones(4,6). I want to combine it with a vector B = zeros(1,6) to make another matrix C of size 5 by 6, where the first four rows would be ones and fifth would be zero.

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Image Analyst
Image Analyst am 22 Aug. 2017
Here's code to do both inserting (like your subject line) and appending (like your message body):
A = ones(4,6)
B = zeros(1,6)
% To append / concatenate:
C = [A; B]
% To insert into a specified row number:
rowToInsert = 3 % Whatever you want.
C = [A(1:rowToInsert-1, :); B; A(rowToInsert:end, :)]
  4 Kommentare
Amay Gupta
Amay Gupta am 14 Okt. 2020
can the first one be used in loops?
if yes please explain.
Image Analyst
Image Analyst am 14 Okt. 2020
What is "the first one"? Please explain. Why do you want loops?

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José-Luis
José-Luis am 22 Aug. 2017
Bearbeitet: José-Luis am 22 Aug. 2017
result = [A;B]
Or use cat()

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