Drexel dragonThe Math ForumDonate to the Math Forum


Math Forum
 Ask Dr. Math
 Discussions
 Internet Newsletter
 MathTools
 Problems of the Week
 Teacher2Teacher
 Teacher Exchange
 Workshops

Search All of the Math Forum:
Browse our Internet Mathematics Library

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: Pull out specific numbers from unstructured text file
Replies: 12   Last Post: Feb 11, 2013 10:26 AM

Advanced Search
Reply to this Topic Reply to this Topic

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
dpb

Posts: 6,692
Registered: 6/7/07
Re: Pull out specific numbers from unstructured text file
Posted: Feb 7, 2013 9:54 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On 2/7/2013 5:34 PM, dpb wrote:
> On 2/7/2013 4:57 PM, Stan wrote:
>> Here is an unstructured text file () that I have:
>>
>> abc
>> abc a134
>> def r5234sdgh
>> gsgfs 6y856 words
>>
>> Nmoves=84 (chess win)
>> Nrequired=101 (chess win maximum moves requested)
...

>>
>> Question:
>> How can I extract the numbers that come after 'Nmoves' and 'Nrequired'?
>
> fgetl() combined w/ string matching and sscanf()
>
...

Actually, it's not bad at all w/ straight ol' Matlab i/o...

fid=fopen(....,'rt');
l=' ';
while 1
l=fgetl(fid);
if strfind(l,'Nmoves')>0,break,end
end
Nmoves=sscanf(l,'Nmoves=%d');
Nrequired=fscanf(fid,'Nrequired=%d');
fid=fclose(fid);

Wrap in a function and voila! (Did it at command line to check...)

--

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2013. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.