matlab 读取txt指定行

$GPRMC,014730.00,A,3414.06629,N,10854.97726,E,0.061,,040615,,,A*7C
$GPVTG,,T,,M,0.061,N,0.112,K,A*26
$GPGGA,014730.00,3414.06629,N,10854.97726,E,1,05,2.64,439.5,M,-27.8,M,,*7F
$GPGSA,A,3,26,32,31,16,03,,,,,,,,4.20,2.64,3.27*01
$GPGSV,3,1,12,03,26,306,26,08,76,177,34,14,46,110,,16,28,208,35*77
$GPGSV,3,2,12,22,11,173,16,23,03,309,,25,22,041,17,26,60,203,42*70
$GPGSV,3,3,12,29,21,079,16,31,63,356,25,32,52,258,44,47,09,102,28*71
$GPGLL,3414.06629,N,10854.97726,E,014730.00,A,A*64
$GPRMC,014731.00,A,3414.06622,N,10854.97727,E,0.068,,040615,,,A*7E
$GPVTG,,T,,M,0.068,N,0.127,K,A*29
$GPGGA,014731.00,3414.06622,N,10854.97727,E,1,05,2.64,439.4,M,-27.8,M,,*75
$GPGSA,A,3,26,32,31,16,03,,,,,,,,4.20,2.64,3.27*01
$GPGSV,3,1,12,03,26,306,26,08,76,177,34,14,46,110,,16,28,208,35*77
$GPGSV,3,2,12,22,11,173,16,23,03,309,,25,22,041,16,26,60,203,42*71
$GPGSV,3,3,12,29,21,079,15,31,63,356,25,32,52,258,44,47,09,102,28*72
$GPGLL,3414.06622,N,10854.97727,E,014731.00,A,A*6F

只读取$GPRMC开头的数据 （每个$GPRMC直接的间隔行可能会不一样）

兄弟啊，你不用那么死板，你现在的意图就好比想从一堆排队的人里找到第一个叫张伟的，你挨个问过去，找到就行了，但你非要他自己报位置再蹦出来。只要你不是考虑速度和内存的问题，后台的处理方式其实毫无关系。

a=load('filename.txt');%filename是你txt文档名称 [m,n]=size(a);%m为a的行数，n为a的列数 for i=2:n plot(a(:,1),a(:,i)); hold all end