Creating a new matrix based on the data from other two matrices

Question

FEM_Analysis_1000 2019-12-23

0
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https://ww2.mathworks.cn/matlabcentral/answers/497806-creating-a-new-matrix-based-on-the-data-from-other-two-matrices

回答： Andrei Bobrov 2019-12-23

采纳的回答： Andrei Bobrov

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I have two matrices:

g1=[0.3 0.3 0.4 0.4 0.5 0.5 ...;

0.1 0.2 0.1 0.2 0.1 0.2 ...];

g2=[0.3 0.3 0.3 0.4 0.4 0.4 0.5 0.5 0.5 ...;

0.3 0.4 0.5 0.3 0.4 0.5 0.3 0.4 0.5];

Matrix g1 is 2 x (2*nx) dimension, and matrix g2 is 2 x (3*nx) - where nx depends from one of the previous steps.

Now, I want to make a new matrix which will take first two rows of matrix g1, then first three rows of matrix g2, then again two rows of matrix g1, three rows of matrix g2 and so on up to the end.

So the final matrix should looks:

g=[0.3 0.3 0.3 0.3 0.3 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 ...;

0.1 0.2 0.3 0.4 0.5 0.1 0.2 0.3 0.4 0.5 0.1 0.2 0.3 0.4 0.5 ...];

clc;clear;close all;
nx=3; % for example (it should be calculated)
g_1=[0.3 0.3 0.4 0.4 0.5 0.5;
     0.1 0.2 0.1 0.2 0.1 0.2];
g_2=[0.3 0.3 0.3 0.4 0.4 0.4 0.5 0.5 0.5;
     0.3 0.4 0.5 0.3 0.4 0.5 0.3 0.4 0.5];
for i=1:nx
    g=[g_1(:,1+(i-1)*2:i*2) g_2(:,1+(i-1)*3:i*3)]
    i=i+1
end
g