Extract Data from .txt File

Hi, someone can help me extract data from this .txt File? I'm interested in extracting the numeric values of "PeakEvm" that appears in the file.

I have tried to use textscan, pattern, extract and extractBetween but they are useless for this task.

Answer 1

[C B]

alltext = fileread('Datos_SSB_624_MHz_7_dB.txt');
% extract data between {"peakEvm": and },
allmatches = regexp(alltext,'(?<={"peakEvm":).*?(?=},)','match')

allmatches = 1×16 cell array
    {'{"percent":12.372359275817871,"subcarrierNumber":753,"symbolNumber":5'}    {'{"percent":13.889286994934082,"subcarrierNumber":522,"symbolNumber":3'}    {'{"percent":9.418230056762695,"subcarrierNumber":574,"symbolNumber":2'}    {'{"percent":9.726147651672363,"subcarrierNumber":694,"symbolNumber":4'}    {'{"percent":13.805439949035645,"subcarrierNumber":517,"symbolNumber":11'}    {'{"percent":14.057321548461914,"subcarrierNumber":750,"symbolNumber":9'}    {'{"percent":8.600445747375488,"subcarrierNumber":696,"symbolNumber":8'}    {'{"percent":8.529023170471191,"subcarrierNumber":698,"symbolNumber":10'}    {'{"percent":14.28252124786377,"subcarrierNumber":517,"symbolNumber":19'}    {'{"percent":16.036340713500977,"subcarrierNumber":516,"symbolNumber":18'}    {'{"percent":8.51211929321289,"subcarrierNumber":579,"symbolNumber":16'}    {'{"percent":8.950516700744629,"subcarrierNumber":695,"symbolNumber":18'}    {'{"percent":14.643827438354492,"subcarrierNumber":517,"symbolNumber":25'}    {'{"percent":15.098423957824707,"subcarrierNumber":519,"symbolNumber":25'}    {'{"percent":9.247054100036621,"subcarrierNumber":573,"symbolNumber":22'}    {'{"percent":9.152688980102539,"subcarrierNumber":696,"symbolNumber":24'}

% extract data between {"percent": and ,
num1 = regexp(allmatches,'(?<={"percent":).*?(?=,)','match');
% extract data between "subcarrierNumber": and ,
num2 = regexp(allmatches,'(?<="subcarrierNumber":).*?(?=,)','match');
% extract data between "symbolNumber": and end
num3 = regexp(allmatches,'(?<="symbolNumber":).*?(?=)','match');

vertcat(num1{:})

ans = 16×1 cell array
    {'12.372359275817871'}
    {'13.889286994934082'}
    {'9.418230056762695' }
    {'9.726147651672363' }
    {'13.805439949035645'}
    {'14.057321548461914'}
    {'8.600445747375488' }
    {'8.529023170471191' }
    {'14.28252124786377' }
    {'16.036340713500977'}
    {'8.51211929321289'  }
    {'8.950516700744629' }
    {'14.643827438354492'}
    {'15.098423957824707'}
    {'9.247054100036621' }
    {'9.152688980102539' }

vertcat(num2{:})

ans = 16×1 cell array
    {'753'}
    {'522'}
    {'574'}
    {'694'}
    {'517'}
    {'750'}
    {'696'}
    {'698'}
    {'517'}
    {'516'}
    {'579'}
    {'695'}
    {'517'}
    {'519'}
    {'573'}
    {'696'}

vertcat(num3{:})

ans = 16×1 cell array
    {'5'}
    {'3'}
    {'2'}
    {'4'}
    {'1'}
    {'9'}
    {'8'}
    {'1'}
    {'1'}
    {'1'}
    {'1'}
    {'1'}
    {'2'}
    {'2'}
    {'2'}
    {'2'}

[Alfredo Serna]

Thank you very much!