I apologise. I omitted an essential part of the first unpack template (the repeat *). Please try substituting this:


my @matrix = map[ unpack 'C*', $_ ], unpack '(a' . NCOLS . ')*', $buff
+er;

[download]
The template has become: '(a3954)*' which tells unpack to split the buffer into as many 3954-byte chunks as are available.
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In reply to Re^3: Unpack an 8 bit unsigned char matrix by BrowserUk
in thread Unpack an 8 bit unsigned char matrix by Ineffectual

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