clc;

    clear;  

    % load the log file of caffe model

    fid = fopen('log-previous-insulator.txt', 'r');

    tline = fgetl(fid);  

    accuracyIter =[];

    accuracyArray =[];

    lossIter = [];

    lossArray = [];

    %record the last line

    lastLine = '';  

    %read line

    while ischar(tline)

        %%%%%%%%%%%%%% the accuracy line %%%%%%%%%%%%%%

        k = strfind(tline, 'Test net output');

        if (k)

            k = strfind(tline, 'accuracy');

            if (k)

                % If the string contain test and accuracy at the same time

                % The bias from 'accuracy' to the float number

                indexStart = k + 11;

                indexEnd = size(tline);

                str = tline(indexStart : indexEnd(2));

                accuracyArray = [accuracyArray, str2num(str)];

            end  

            % Get the number of index

            k = strfind(lastLine, 'Iteration');

            if (k)

                indexStart = k + 10;

                indexEnd = strfind(lastLine, '(');

                str2 = lastLine(indexStart : indexEnd - 1);

                accuracyIter  = [accuracyIter, str2num(str2)];

            end  

            % Concatenation of two string

            res_str = strcat(str2, '/', str);

        end  

        %%%%%%%%%%%%%% the loss line %%%%%%%%%%%%%%

        k1 = strfind(tline, 'Iteration');

        if (k1)

           k2 = strfind(tline, 'loss');

           if (k2)

               indexStart = k2 + 7;  %loss位置到数据位置起始位置相差7位

               indexEnd = size(tline);

          str1 = tline(indexStart:indexEnd(2));  %数据开始位置到结束位置，就是loss,也就是纵坐标

               indexStart = k1 + 10;  %从iteration到迭代次数数据起始位相差10位

               indexEnd = strfind(tline, '(') - 1; %找到左括号位置-1:根据你的txt来看是括号还是逗号

               str2 = tline(indexStart:indexEnd);  %从起始位置到结束位置为迭代次数，也就是横坐标

               res_str1 = strcat(str2, '/', str1);  %把横纵坐标连接起来

               lossIter  = [lossIter,  str2num(str2)];  %把迭代次数转化为数据赋值给lossiter

               lossArray = [lossArray, str2num(str1)];  %把loss转化为数据复给lossArray

           end

        end  

        lastLine = tline;

        tline = fgetl(fid);

    end  

    %draw figure

    figure;h1 = plot(accuracyIter, accuracyArray);title('iteration vs accurancy');  %绘制accuracy曲线

    figure;h2 = plot(lossIter, lossArray);title('iteration vs loss');   %绘制loss曲线

    print(2,'-dpng','iteration vs loss')%保存