making one matrices dimension same as other

Question

Tino 2019-5-3

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/460007-making-one-matrices-dimension-same-as-other

编辑： KALYAN ACHARJYA 2019-5-3

采纳的回答： KALYAN ACHARJYA

hi

I have the following matrices

h = 5.1000 3.5000 1.4000 0.2000

6.4000 3.2000 4.5000 1.5000

5.4000 3.4000 1.7000 0.2000

5.7000 2.8000 4.5000 1.3000

5.7000 4.4000 1.5000 0.4000

5.6000 2.9000 3.6000 1.3000

k = 5.1000 3.8000 1.9000 0.4000

6.4000 2.9000 4.3000 1.3000

4.3000 3.0000 1.1000 0.1000

5.4000 3.0000 4.5000 1.5000

I want to make K =

5.1000 3.8000 1.9000 0.4000

6.4000 2.9000 4.3000 1.3000

4.3000 3.0000 1.1000 0.1000

5.4000 3.0000 4.5000 1.5000

0.0000 0.0000 0.0000 0.0000

so that it has the same dimension as h. How do i do that. Thanks in advance

Tino

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Answer 1

KALYAN ACHARJYA 2019-5-3

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/460007-making-one-matrices-dimension-same-as-other#answer_373410

编辑：KALYAN ACHARJYA 2019-5-3

在 MATLAB Online 中打开

[rows1 colm1]=size(h);
[rows2 colm2]=size(k);
% You can change the way depending on sizes of h and k
% Also which direction you want to pad zeros
k_revise=[k;zeros(rows1-rows2,colm1)];

5.1000 3.8000 1.9000 0.4000

6.4000 2.9000 4.3000 1.3000

4.3000 3.0000 1.1000 0.1000

5.4000 3.0000 4.5000 1.5000

0 0 0 0

There are more smart way to do the same, please follow padarray

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Tino 2019-5-3

ok Kalyan

But if I want to make it 0.0000 instead of using a single 0 how do I go about it

thanks again

KALYAN ACHARJYA 2019-5-3

编辑：KALYAN ACHARJYA 2019-5-3

在 MATLAB Online 中打开

>> format long
>> rand(2,2)
ans =
   0.141886338627215   0.915735525189067
   0.421761282626275   0.792207329559554
>> format short
>> rand(2,2)
ans =
    0.9595    0.0357
    0.6557    0.8491