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I want to read all wave files in a folder in Matlab. I use this code to open theses files:
Files=dir('path folder.wav');
for k=1:length(Files)
FileNames=Files(k).name;
[s,fs]=wavread(FileNames);
end
but this code doesn't work, wave files do not open. Why? Can you help me?
The dir() command returns only file names - not the full path.
So, possible you just need to restore full path:
dirMask = 'path folder.wav';
wavRoot = fileparts(dirMask);
Files=dir(dirMask);
for k=1:length(Files)
FileNames = fullfile(wavRoot, Files(k).name);
[s,fs] = wavread(FileNames);
end
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I have a1 in the following form in MATLAB.
a1{1,1} = {'x1','x2','x3'}
a1{1,2} = {'x1','x2','x3','x4'}
a1{1,3} = {'x4'}
I need to replace
'x1' with 'Text1'
'x2' with 'Text2'
'x3' with 'Text3'
'x4' with 'Text4'
I have tried a couple of things with no success and I am a bit lost, does anyone have any ideas.
Thanks
Regular Expressions might be a way to go with this
a1{1,1} = {'x1','x2','x3','x4'};
a1{1,1} = regexprep(a1{1,1},'x([0-9])','text$1');
Will result in a1{1,1} containing
{'text1'} {'text2'} {'text3'} {'text4'}
This will work for any single digit numerical value (0-9) that is prefixed with the letter x.
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In Windows 7, I need to use Maple to export the Tex code into a text file.
In Command-line Maple, I type latex(LambertW(x), "C:/Users/Bravo/Desktop/out.txt"); to do this, but the result is:
{\rm W} \left(x\right)
That is not right, why does it happen ? Is there any method to solve this problem ?
Yeah, that is a bug in Maple. You can try latex(subs(LambertW=lambertW,erf=Erf,arctanh=Artanh,LambertW(x)));
Reference: http://www.mapleprimes.com/questions/201975-Maple-Error-Using-Latex-Command-How-To-Resolve#comment207767
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Could you please tell me what this line do of sed
the expression is on the title
Thank you
Best regards
It replaces everything on the line with the number immediately following "-svn".
eg.:
blahblabhlabhlabhalbh-svn12345blahblhablhab
is replaced by:
12345
It's matching a string of [anything]-svn[numbers][anything], and replacing the line with the [numbers].
For example:
asda-svn123123bebeb
Gets replaced with
123123
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I have this string
$eq= "ew';##rfhnbgsu.,/><hdjsdedokk";
By Perl I want to extract just the characters w, h, n, s, and f from the string.
The output should be like this
whhfnss
Could you help me?
say $s =~ /[whnsf]/g;
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I am now want to compress a file name File1.txt which is in the current folder. When I try to use the function tar like:
tar('File1.tgz','File1.txt');
Some error happen.
Undefined variable "File1" or function "File1.tgz".
Error in tar (line 1)
tar(File1.tgz,'File1.txt');
Is it any incorrect part of this?
You forgot to put ''.
Try:
tar('File1.tgz','File1.txt');
In my MatlabR2013a it works without problems.
Matlab example:
%Tar all files in the current directory to the file backup.tgz
tar('backup.tgz','.');