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Re^3: perl error

by dreadpiratepeter (Priest)
on Jul 29, 2011 at 00:10 UTC ( #917372=note: print w/replies, xml ) Need Help??

in reply to Re^2: perl error
in thread perl error

Actually, your code has a number of problems.
  • that isn't how you initialize a 2-dimensional array. your initialization of @matrix will make a 722 element 1d array. You would need something like: @matrix=map {[(0) x 361]} (0..361);
  • From what I can see you want:  $Matrix[$a+180][$b+180] += 1;

I would suggest giving Modern Perl or Learning Perl and Programming Perl a good read to get down some of the fundamentals.

Update: Also you set $a and $b to values, then immediately set them to int($phi) and int($psi) which are undefined. If you were running with strict and warnings the compiler would have shown you that.

"Worry is like a rocking chair. It gives you something to do, but it doesn't get you anywhere."

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Re^4: perl error
by topaz (Initiate) on Jul 29, 2011 at 00:29 UTC
    Many thanks for your advice :) I will try my best

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