How can I read variable textfiles?

Hello, I've searched in many discussions and didn't find a solution for my problem. I have got a textfile with some headlines and afterwards there are data. It's like Pos1 Pos2 Pos3 ... 1.2 2.3 2.13 ... 4.23 2.34 2.22 ... 7.54 4.55 2.55 ... ... I want to import the files but the number of columns differs. And the number of lines ist about 20.000 so I need a code, that reads automatically until the end of the columns and lines. Is there any solution? Unfortunately, i'm a very beginner and I haven't done much with Matlab. I'e tried a lot with textscan function but I wasn't successful.. Thanks in advance!

[Stephen23]

Please edit your question and upload a sample file using the paperclip button. A sample file does not to be all of the data, but it needs to correctly represent the structure of the complete data file.

[Jan]

How can the "some headlines" be recognized? Please post a copy of teh relevant part of the file. Note that "it's like..." is not exact enough to post matching code.

Answer 1

[Azzi Abdelmalek]

You can use importdata

D=importdata('fileName.txt')
N=D.data

[ThermoSteel]

Thanks for the answer. I can use it for my data import!

Answer 2

[Jan]

Open the file by fopen. Then read it line by line until you read the first line of data. I cannot guess how this is recognized, because this might depend on the header lines.

Then read the first line of data. Use sscanf(LineStr, '%g') to determine the number of columns. Now adjust the format string to teh number of columns and import the rest of the file by fscanf.

A more explicit answer is possible, if you who us a typical file.