You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: OPE_evaluate.m
    path of file: ./repos/unified_tracking_benchmark/evals
    
    the code of the file until where you have to start completion: function OPE_evaluate(sequences, trackers)
%OPE_EVALUATE(SEQUENCES, TRACKERS)
%
    for iseq = 1:length(sequences)
        for itrk = 1:length(trackers)
            fprintf('%5d_%-12s,%3d_%-20s\n',iseq,sequences{iseq}.name,itrk,trackers{itrk}.name);
            OPE(sequences{iseq}, trackers{itrk});
        end
    end
end

    
function OPE_evaluate(sequences, trackers)
%OPE_EVALUATE(SEQUENCES, TRACKERS)
%
    for iseq = 1:length(sequences)
        for itrk = 1:length(trackers)
            fprintf('%5d_%-12s,%3d_%-20s\n',iseq,sequences{iseq}.name,itrk,trackers{itrk}.name);
            OPE(sequences{iseq}, trackers{itrk});
        end
    end
end

function OPE(s, t)
%OPE(SEQUENCE, TRACKER)
%
% One pass evaluation (OPE). Run the TRACKER on the whole SEQUENCE once.
% Then save the results.
%
    % fprintf('%-12s - %-12s\n', s.name, t.name);
    % Pre-settings
    dataset = get_global_variable('dataset');
    switch dataset
        case {'OTB2013', 'OTB50', 'OTB100'}
            dataset = 'OTB';
    end