Creating new variable using different row and column chunks from a matrix

Question

Tanaya Chatterjee 2023-9-25

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2025457-creating-new-variable-using-different-row-and-column-chunks-from-a-matrix

编辑： Fangjun Jiang 2023-9-25

在 MATLAB Online 中打开

My data (D) is a '29x46 double' matrix.

I want to sort and create six columns variable(Training1_T) usign the different chunks of a data.

For explaination:

I'm using the following code which is error-free but is not generating the output file I desire

Training1_T= D ([1:14,17:21],[15:29,32:36]);

where from the D matrix, I want matlab to pick two chunks of the data. In the first chunk, I want matlab to use the 1-14th rows and the 17-21st column. For the second chunk, i want the 15-29th rows and 32-36th columns. Finally, I want the output file to have 5 columns only where the second chunk starts from the next row in the new output variable (Training1_T).

The current output is a 19x20 double file but I want it to give me 29x5 output

Please Help. Thank you in advance

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Answer 1

Fangjun Jiang 2023-9-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2025457-creating-new-variable-using-different-row-and-column-chunks-from-a-matrix#answer_1317697

编辑：Fangjun Jiang 2023-9-25

在 MATLAB Online 中打开

D=rand(29,46);
Training1_T= [D(1:14,17:21);D(15:29,32:36)]
Training1_T = 29×5
4639    0.6552    0.5909    0.8170    0.5006
9003    0.1424    0.8562    0.3617    0.8886
5063    0.1177    0.0033    0.2036    0.1707
0110    0.9165    0.3567    0.2180    0.9540
1185    0.0209    0.5498    0.3251    0.4267
7671    0.0287    0.3322    0.9954    0.4837
3038    0.5179    0.0249    0.7210    0.9949
6572    0.7353    0.0993    0.7551    0.8169
3463    0.2117    0.2269    0.3354    0.9094
7500    0.9285    0.2980    0.3788    0.9994