How to import only rows containing numbers from a .txt file?

I have a .txt document that look like this:

etcon,set ! allow ANSYS to choose best KEYOP's for 180x elements

/com,*********** Nodes for the whole assembly *********

nblock,3

(1i9,3e20.9e3)

1 -0.000000000E+000 1.000000000E+002 0.000000000E+000

2 0.000000000E+000 0.000000000E+000 0.000000000E+000

3 1.000000000E+002 0.000000000E+000 0.000000000E+000

4 1.000000000E+002 1.000000000E+002 0.000000000E+000

I only want to import the last 4 rows. How can I do that?

Answer 1

[Star Strider]

Without actually having your file I can’t write exact code for it. This should work, although you may have to experiment with it:

fidi = fopen('text_doc.txt','r');
data = textscan(fidi, '%f%f%f%f', 'HeaderLines',4);

You may need other name-value pair arguments, such as 'Delimiter', 'EndOfLine' and others.

[Ermin Sehovic]

The file is called "Plate.dat". When I try that code the output is:

data = [0x1 double] [0x1 double] [0x1 double] [0x1 double]

and not a 4x3 matrix as I would like to.

[Star Strider]

I can’t write code to read the file without having the file to work with.

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