Read txt file and exclude string line..

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Ahmed Anas
Ahmed Anas on 5 Mar 2020
Commented: Ahmed Anas on 5 Mar 2020
I have attached a file openable in text . The data of the file is as follows:
Note: Joint label, Equation numbers for U1, U2, U3, R1, R2, R3. (See .TXA file)
2 1 0 0 0 2
0
3 0 0 0 0 0
0
4 3 0 4 0 5
0
What i want is to make a matrix from the file by reading the file. The matrix should have three rows and 7 columns. The string line should be excluded.
The first row contains : 2 1 0 0 0 2 0
means the first numeric row in the file and the single numeric entity in the next row should be stored in the 1st row of the matrix made.
and same is for the 2nd and 3rd row of the matrix.
The final matrix is as follows:
2 1 0 0 0 2 0
3 0 0 0 0 0 0
4 3 0 4 0 5 0
Thanks in advance,
  6 Comments
Ahmed Anas
Ahmed Anas on 5 Mar 2020
@Guillaume , Am structure engineering doing my research project on matlab in desktop application development. This file is generated by Sap 2000, a civil engineers software.. Yeah i know this is so badly formated but this data is very helpful for me in my research..

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