What is the fastest way to unzip textfiles in Matlab during a function?

Posted by Paul on Stack Overflow See other posts from Stack Overflow or by Paul
Published on 2010-02-19T09:49:59Z Indexed on 2010/04/17 3:03 UTC
Read the original article Hit count: 553

Filed under:

matlab

|

unzip

|

gunzip

|

Performance

|

textfiles

Hello all,

I would like to scan text of textfiles in Matlab with the textscan function. Before I can open the textfile with fid = fopen('C:\path'), I need to unzip the files first. The files have the extension: *.gz

There are thousands of files which I need to analyze and high performance is important.

I have two ideas: (1) Use an external program an call it from the command line in Matlab (2) Use a Matlab 'zip'toolbox. I have heard of gunzip, but don't know about its performance.

Does anyone knows a way to unzip these files as quick as possible from within Matlab?

Thanks!

© Stack Overflow or respective owner

Related posts about matlab

Importing matlab functions in matlab

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I have some Matlab functions defined in .m files and I'd like to import them into Matlab (as in I'd like them to form part of the commands). Is this possible please and how can I do this? Thank you very much and regards, Krt_Malta >>> More
c# with matlab dll should be running on pc without matlab

as seen on Stack Overflow - Search for 'Stack Overflow'
hi, i have a very big problem. ich wrote a programm which is using a matlab dll. i build some classes with the matlab .net builder. it runs on my pc :) the problem is, i want to use ist on a pc without matlab. so i installed mcr, but it dont run :( what are the steps i should do? the system variable… >>> More
Matlab and .NET Interaction

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All! I'm having an issue interacting between Matlab and .NET. I've managed to call .NET methods from Matlab code and vice versa. However, if I call a .NET method that, in turn, instantiates a Matlab object, it crashes (with a type initialization exception). Think about this scenario: a .NET… >>> More
Matlab matrix replacement assignment gives error

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, when i tried to update some part of a matrix, i got the following error message: ??? Assignment has fewer non-singleton rhs dimensions than non-singleton subscripts My code tries to update some values of a matrix that represent a binary image. My code is as follows: outImage(3:5,2:4,1) =… >>> More
MATLAB matrix replacement assignment gives error

as seen on Stack Overflow - Search for 'Stack Overflow'
I tried to update some part of a matrix, I got the following error message: ??? Assignment has fewer non-singleton rhs dimensions than non-singleton subscripts My code tries to update some values of a matrix that represent a binary image. My code is as follows: outImage(3:5,2:4,1) = max(imBinary(3:5… >>> More

Related posts about unzip

Unzip a bunch of zips into their own directories

as seen on Server Fault - Search for 'Server Fault'
I have a bunch of zip files I want to unzip in Linux into their own directory. For example: a1.zip a2.zip b1.zip b2.zip would be unzipped into: a1 a2 b1 b2 respectively. Is there any easy way to do this? >>> More
Unzip a bunch of zips into their own directories

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a bunch of zip files I want to unzip in Linux into their own directory. For example: a1.zip a2.zip b1.zip b2.zip would be unzipped into: a1 a2 b1 b2 respectively. Is there any easy way to do this? >>> More
force unzip to also delete any missing files

as seen on Super User - Search for 'Super User'
Currently when I unzip into a directory with pre-existing files, I sometimes unzip an archive to update the files, using -f or -u or -o to overwrite any clashes. However I would like the unzip process to also delete any files which were not part of the archive, so that the unzipped version fully… >>> More
uncompressing .zip file in linux [closed]

as seen on Stack Overflow - Search for 'Stack Overflow'
hi, I have a .zip file (It contains multiple files, ex: file1.txt file2.txt file3.txt.. n so on) in a directory. And my query is: How to extract the files from .zip archive to the very same directory and how to create the list of all the files extracted from .zip archive.** The extracted file… >>> More
What command do I need to unzip/extract a .tar.gz file?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I received a huge .tar.gz file from a client that contains about 800 mb of image files (when uncompressed.) Our hosting company's ftp is seriously slow, so extracting all the files locally and sending them up via ftp isn't practical. I was able to ftp the .tar.gz file to our hosting site, but when… >>> More