how to merge tables without any common keywords?

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Taoli Li 2016-1-18

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编辑： Walter Roberson about 20 hours 前

I have a 20*20,a 20*1 and a 1*20 tables. I would like add the last two tables into the first one and become a 21*21 table. However all of the three tables are exactly numeric and do not have name for rows and columns and no common keywords.

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Walter Roberson 2024-7-26，5:14

编辑：Walter Roberson about 20 hours 前

I have to wonder whether table here refers to numeric matrices, or to table objects ?

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Answer 1

BhaTTa 2024-7-26，4:33

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To add the 20x1 and 1x20 tables to the 20x20 table to create a 21x21 table in MATLAB, you can follow these steps:

Create the initial tables:

Let A be your 20x20 table.
Let B be your 20x1 column vector.
Let C be your 1x20 row vector.

Expand the size of the original table:

Initialize a new 21x21 matrix filled with zeros.
Place the original 20x20 matrix A into the top-left corner of this new matrix.
Add the 20x1 vector B as the last column of the new matrix.
Add the 1x20 vector C as the last row of the new matrix.
Make sure to place the bottom-right cell of the new matrix appropriately to avoid overwriting.

Here's how you can do this in MATLAB:

% Sample data (replace these with your actual data)
A = rand(20, 20);  % 20x20 matrix
B = rand(20, 1);   % 20x1 column vector
C = rand(1, 20);   % 1x20 row vector
% Initialize a 21x21 matrix with zeros
D = zeros(21, 21);
% Place the 20x20 matrix A into the top-left corner
D(1:20, 1:20) = A;
% Add the 20x1 vector B as the last column (column 21)
D(1:20, 21) = B;
% Add the 1x20 vector C as the last row (row 21)
D(21, 1:20) = C;
% Add the bottom-right cell to complete the matrix (intersection point)
D(21, 21) = 0; % If you want to fill it with a specific value, replace 0 with that value