in reply to Re^7: Write Matlab binary MAT-files from Perl (repeat)
in thread Write Matlab binary MAT-files from Perl

What's your perl version? Try this perhaps: 

print $h pack 'l4 l/Z (Z*)*', $type, $m, $n, $imag,  $name,  @a;

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Re: ascii string to characters—that's simple: my @arr = unpack 'C*', $x;

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Re^9: Write Matlab binary MAT-files from Perl (repeat)
by BrowserUk (Patriarch) on Jul 26, 2014 at 01:07 UTC
    Re: ascii string to characters—that's simple: my @arr = unpack 'C*', $x;

    Not if its packed with 'Z*'.

    Plus: Your '(Z*)*' is no substitute for 'd*'. Remember the OP said that d* worked for arrays of less than 10 values.

    Tye called it above with binmode; your addition is unnecessary and wrong.

    With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.
[reply]

      Thank you both very much for your comments!

      Tye,
      my Perl version is:
      perl 5, version 12, subversion 2 (v5.12.2) built for MSWin32-x64-multi-thread

      The second format you gave me didn't work either...
      It creates a file matlab refuses to load.
      Here is the comparison between this file and the expected one (created by matlab for reference):
      http://srv1.jpg.co.il/10/53d36c18b62cc.jpg

      BrowserUK,
      My strings are "simple" ones (not packed with 'Z*') and the command Tye wrote worked in converting the string to array of ascii numbers.

      Re: Tye called it above with binmode; your addition is unnecessary and wrong.

      I don't understand what you mean... How should I change the format to save the strings in the format matlab needs them...?

      Thanks,
      Koby

[reply]
[d/l]
        How should I change the format to save the strings in the format matlab needs them...?

        As far as I can tell, you shouldn't need to change the format!

        The only problem you had was that the with the file in text mode, some numbers produced byte values of 13d/0x0d, which windows text mode then duly added a 10d/0x0a byte. Hence, you were getting an extra byte.

        With binmode, the extra character won't be added, and (I assume) the modules existing format will then work.

        Otherwise, contact the modules author.

        With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
        Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
        "Science is about questioning the status quo. Questioning authority".
        In the absence of evidence, opinion is indistinguishable from prejudice.
[reply]

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