Error using unzip (line 84)

I need to unzip files automatically in my matlab and when I use the unzip function, I can't unzip a file ending in .sp3.zip.

I need a solution, being able to use some external command, anything, however, needs to be fast because I will work with a large volume of data.

Attached is an example of the data I'm trying to unzip and can't.

Answer 1

[Walter Roberson]

The file is not zip and is not gzip either.

If you happen to be using Mac or Linux, then rename the file to end with .Z and then use the system uncompress utility

!cp igs18143.sp3.zip igs18143.sp3.Z
!uncompress *.Z

[Clodoaldo de Souza Faria Júnior]

I don't use linux, I use Windows 10.

And this file, I can unzip it manually, but via code I can't and I really need this to be done automatically to proceed with my code.

[Walter Roberson]

I suspect that 7zip could handle the files.

https://www.7-zip.org/download.html

Download 7zip

https://stackoverflow.com/questions/14122732/unzip-files-7-zip-via-cmd-command

• install 7z in your machine
• set the path in Environment Variables -> User Variables path -> edit -> new (add the path - C:\ProgramFiles\7-Zip) -> OK

Once the above is done then inside matlab

filename = 'igs18143.sp3.zip' 
cmd = sprintf('7z.exe e "%s"', filename) 
[status, msg] = system(cmd)

[Clodoaldo de Souza Faria Júnior]

It finally worked out, thank you very much.

Plus it worked really fast.

[Walter Roberson]

Which decompress program did you end up using?

[Clodoaldo de Souza Faria Júnior]

I used 7-zip