How to read a .txt file in matlab ?

How can i read this file into a array ,

1 00000U 00000A   20312.59332066 -.00000053 +00000-0 +00000-0 0  9995
2 00000 041.7516 141.5756 0748458 270.4086 349.5770 01.00280009037209

I used this code :

fileID = fopen('TLE.txt','r');
formatSpec = '%d %c ';
sizeA = [2 inf];
A = fscanf(fileID,formatSpec,sizeA);
fclose(fileID);

Answer 1

[dpb]

The file is irregular -- there are 9 elements in first record and only eight (8) in second. Besides that, they're inconsistent in data type by position in the second and third columns.

You need a definition of what the file contains to be able to parse it.

readtable would bring it in with cellstr data types for the mismatched columns and a missing value, but you would still need to know "who's who in the zoo" in order to make any sense of what the file contains.

>> tlars=readtable('lars.txt','ReadVariableNames',0,'HeaderLines',0)
tlars =
  2×9 table
    Var1       Var2           Var3          Var4        Var5           Var6            Var7        Var8     Var9  
    ____    __________    ____________    ________    _________    ____________    ____________    ____    _______
    1.00    {'00000U'}    {'00000A'  }    20312.59        -0.00    {'+00000-0'}    {'+00000-0'}    0.00    9995.00
    2.00    {'00000' }    {'041.7516'}      141.58    748458.00    {'270.4086'}    {'349.5770'}    1.00        NaN
>> 

returns everything in the file plus the missing variable indicator for the second record; what you can make out of it is up to you having some idea of what the various pieces are.

NB: also that MATLAB doesn't recognize the floating point values as being so missing the E in the exponent; you'll have to work around that as well.

[Lars Urban]

Thank you for the help. I will rewrite the .txt file.