matlab中fprintf fscanf fwrite fread函数的用法

               

clearclccd('C:\Documents and Settings\Administrator\桌面\matlab\test');a = 1 : 10;fid = fopen('myData.txt', 'w');fprintf(fid, '%d ', a);fclose(fid);

      上述程序生成了myData.txt文件，其中的内容为：

1 2 3 4 5 6 7 8 9 10

 

clearclccd('C:\Documents and Settings\Administrator\桌面\matlab\test');fid = fopen('myData.txt', 'r');[a count] = fscanf(fid, '%d', inf);fclose(fid);

      上述程序从myData.txt中读取数据，放在列向量a中，最终count = 10; a = [1;2;3;4;5;6;7;8;9;10];

 

clearclccd('C:\Documents and Settings\Administrator\桌面\matlab\test');a = 0 : 255;fid = fopen('myFile.yuv', 'wb');fwrite(fid, a, 'uchar');fclose(fid);

      上述程序是以二进制方式存的0-255, 用文本文件方式打开肯定是乱码, 所以要用UltraEdit打开，真正看到的是存储在里面的比特位, 用UltraEdit看到的结果是: 00 01 02 ...... FE FF

 

clearclccd('C:\Documents and Settings\Administrator\桌面\matlab\test');fid = fopen('myFile.yuv', 'rb');[a count] = fread(fid, inf, 'uchar');fclose(fid);

      上述程序读取myFile.yuv文件中的内容，count = 256; a = [0;1;2;...;254;255];

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