MATLAB: Extract specific line with nubers

extract dataspecific lines

How can I extract specific line with numbers? There is a long data. For example I need pull up this line 1.000E+36 5.000 47.250 0.500 1.32581E-15 7.76995E-01 , but second number which is R=5, but instead of 5 i need like 10, 15, 20 variables changing.
Energy R Z Th Result Rel Error
1.000E+36 5.000 6.750 0.500 2.14157E-17 9.41189E-01
1.000E+36 5.000 20.250 0.500 3.03054E-16 4.40884E-01
1.000E+36 5.000 33.750 0.500 8.99403E-16 6.43572E-01
1.000E+36 5.000 47.250 0.500 1.32581E-15 7.76995E-01
1.000E+36 5.000 60.750 0.500 2.98685E-15 4.44014E-01
1.000E+36 5.000 74.250 0.500 4.74431E-15 4.53362E-01
1.000E+36 5.000 87.750 0.500 6.20340E-15 5.40478E-01
1.000E+36 5.000 101.250 0.500 2.08979E-15 5.63431E-01
1.000E+36 5.000 114.750 0.500 1.72973E-15 5.51851E-01

Best Answer

  • Hey Ali,
    I hardly recommend you to format your data as a table.
    For extracting a specific Line use find():
    For Example:
    Energy R Z Th Result Rel Error
    1.000E+36 5.000 6.750 0.500 2.14157E-17 9.41189E-01
    Energy=1;
    R=1;
    Z=1;
    Th=1;
    Result=2;
    RelError=3;
    %myTable is your readIn Data
    YourLine=find(myTable{:,1}==Energy&myTable{:,2}==R&myTable{:,3}==Z&myTable{:,4}==Th,&myTable{:,5}==Result&...
    myTable{:,6}==RelError);
    if(isempty(YourLine)==0)%just to prevent crashes if a line can not be found
    %do something further
    end