load text file with specific format

Hello,

I have a problem loading a text file that has format like this:

20

65

33

500

12 34 3.99

14 20 6.09

12 31 2.90

I have tried different functions e.g(import data,open, load,textscan ... ), none of them works. I need to use the above format as it is.

any suggestions please.

Answer 1

[Walter Roberson]

fid = fopen('YourFile.txt', 'r');
first4cell = textscan(fid, '%g', 4);
restcell = textscan(fid, '%g%g%', 'CollectOutput', 1);
fclose(fid);

first4 = first4cell{1};
rest = restcell{1};

now first4 will be a column vector containing the 4 leading values, and rest will be an N x 3 matrix containing the values from the remainder of the file.

[Mr. Unkown]

Thanks Walter,

in this way my file will be in two parts. I need to read or load the file in the same format,then I'll send it to an executable file that i'm able to use through MATLAB.

[Walter Roberson]

What datatype would you want it stored before you send it? What format does the executable need the data to be in?

[Mr. Unkown]

Walter,

I believe I have asked a wrong question:) In fact, i just need to pass the text file to the executable. I figure how to do it.

your answer helped me in another part, and i've a question: when I use your approach I got this error:(Error using textscanBadly formed format string.) I changed %g%g%g to %d%d%d and works fine but it doesn't display the floating number and if i used %d%d%f it displays only two columns. Thank you for help