need help parsing data from .dat file

3 次查看（过去 30 天）
nathan brummel
nathan brummel 2011-7-6
I can not seem to parse out the data in matlab. here is an example.
0R1,Dn=099D,Dm=099D,Dx=099D,Sn=1.9M,Sm=1.9M,Sx=2.0M 0R1,Dn=111D,Dm=111D,Dx=111D,Sn=2.8M,Sm=2.8M,Sx=2.9M 0R1,Dn=103D,Dm=103D,Dx=103D,Sn=3.0M,Sm=3.1M,Sx=3.1M 0R1,Dn=113D,Dm=113D,Dx=113D,Sn=3.1M,Sm=3.1M,Sx=3.2M 0R1,Dn=088D,Dm=088D,Dx=088D,Sn=2.5M,Sm=2.5M,Sx=2.6M 0R1,Dn=104D,Dm=104D,Dx=104D,Sn=2.7M,Sm=2.8M,Sx=2.8M 0R1,Dn=122D,Dm=122D,Dx=122D,Sn=2.8M,Sm=2.9M,Sx=2.9M 0R1,Dn=109D,Dm=109D,Dx=109D,Sn=2.8M,Sm=2.8M,Sx=2.9M 0R1,Dn=121D,Dm=121D,Dx=121D,Sn=2.5M,Sm=2.6M,Sx=2.6M 0R1,Dn=134D,Dm=134D,Dx=134D,Sn=2.3M,Sm=2.3M,Sx=2.4M 0R1,Dn=147D,Dm=147D,Dx=147D,Sn=2.0M,Sm=2.1M,Sx=2.1M 0R1,Dn=129D,Dm=129D,Dx=129D,Sn=1.6M,Sm=1.6M,Sx=1.7M 0R1,Dn=136D,Dm=136D,Dx=136D,Sn=1.3M,Sm=1.3M,Sx=1.4M
i just need the numbers; however when i try to use the built in importer it does not even separate the data with commas.
please help.
here is what the beginning of the file looks like.
$GPGGA,044238,3252.1847,N,11715.0445,W,1,03,8.3,,M,-33.0,M,,*58 $GPRMC,044239,A,3252.1841,N,11715.0441,W,000.0,000.0,060309,013.0,E*6A $GPGGA,044239,3252.1841,N,11715.0441,W,1,03,8.3,,M,-33.0,M,,*5B $GPRMC,044240,A,3252.1810,N,11715.0438,W,000.0,000.0,060309,013.0,E*6E $GPGGA,044240,3252.1810,N,11715.0438,W,1,03,8.3,,M,-33.0,M,,*5F $GPRMC,044241,A,3252.1790,N,11715.0436,W,000.0,000.0,060309,013.0,E*66 $GPGGA,044241,3252.1790,N,11715.0436,W,1,03,8.3,,M,-33.0,M,,*57 $GPRMC,044242,A,3252.1775,N,11715.0432,W,000.0,000.0,060309,013.0,E*6A $GPGGA,044242,3252.1775,N,11715.0432,W,1,05,8.3,,M,-33.0,M,,*5D $GPRMC,044243,A,3252.1785,N,11715.0434,W,000.4,000.0,060309,013.0,E*66 $GPGGA,044243,3252.1785,N,11715.0434,W,1,05,2.4,,M,-33.0,M,,*58 $GPRMC,go
$:E010*6A $C0.00T12.4:E200*79 $C-1.00T11.7:E200*55 $C-1.00T11.3:E200*51 $C-1.00T12.4:E200*55 $C-1.00T11.9:E200*5B $C-1.00T11.7:E200*55 $C-1.00T12.0:E200*51 $C-1.00T12.0:E200*51 $C-1.00T12.4:E200*55 $C-1.00T12.0:E200*51 0R1,Dn=099D,Dm=099D,Dx=099D,Sn=1.9M,Sm=1.9M,Sx=2.0M 0R1,Dn=111D,Dm=111D,Dx=111D,Sn=2.8M,Sm=2.8M,Sx=2.9M
in addition to parsing i would like to know how to automate it for many files of the same type.
any help would be much appreciated. thank you.

请先登录，再回答此问题。

回答（2 个）

Jan
Jan 2011-7-6
Please explain, if the $-lines are comment lines, which should be ignored.
Your statement "i just need the numbers;" is not clear. Which numbers do you want for this line:
0R1,Dn=111D,Dm=111D,Dx=111D,Sn=2.8M,Sm=2.8M,Sx=2.9M
Perhaps these:
0 1 111 111 111 2.8 2.8 2.9
?
Ashish Uthama
Ashish Uthama 2011-7-8
Please do update the question clarifying Jan's comments.
In the meantime, here's something to give you some ideas: (also look at fgetl),
>> s = '0R1,Dn=136D,Dm=136D,Dx=136D,Sn=1.3M,Sm=1.3M,Sx=1.4M'
>> numStrings = regexp(s,'=[0-9.]+','match')
numStrings =
'=136' '=136' '=136' '=1.3' '=1.3' '=1.4'
>> numStrings = strrep(numStrings,'=','')
numStrings =
'136' '136' '136' '1.3' '1.3' '1.4'
>> nums = str2double(numStrings)
nums =
136.0000 136.0000 136.0000 1.3000 1.3000 1.4000

类别

在 Help Center 和 File Exchange 中查找有关 String Parsing 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by