I have a code that determines the distance between some points and lists the distances in a matrix like so,

      
0  4  5

4  0  4

5  4  0

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Right now I type the points manually, but I want the code to read the text file itself so I don't type 900+ values manually.

Here is the format of the text file (file.txt):

A X 79 54 53
B Y 81 54 50
C Y 83 51 52

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X and Y is extra information, not important for calculating distance. And here's the code I have (Thank you to user NetWallah for help with this): 


my @points = ( {A=>A, X=>79.620,   Y=>54.720, Z=>53.034},
               {A=>B, X=>81.822,   Y=>54.071, Z=>50.027},
               {A=>C, X=>83.871,   Y=>51.966, Z=>52.424});

my @results;

for my $x(0..$#points){
   my $p1 = $points[$x];
   for my $y (0..$#points){
        my $p2 = $points[$y];
        my $dist = sqrt(abs(( $p1->{X} - $p2->{X} ) **2
                 + ( $p1->{Y} - $p2->{Y} ) **2
                 + ( $p1->{Z} - $p2->{Z} ) **2)) ;  
        $results[$x][$y] = sprintf("%.0f", $dist);
   }
 }
#-------------------

for my $r (@results){
   printf "%.0f\t",$_ for @$r;
   print "\n";
 }

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I added the "A=>" part because I wanted the matrix to show that parameter when it listed distance, but I have been unable to work that in properly.

This is the distance equation I am using:

 

$d = sqrt(($rx1 - $rx2)**2 + ($ry1 - $ry2)**2 + ($rz1 - $rz2)**2);

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I would appreciate any advice on how to get the code to 1) read the values so I don't have to type them manually, and 2) print the matrix like so: 


  A  B  C

A 0  4  5

B 4  0  4

C 5  4  0

[download]

In reply to reading a text file and accepting input by doozy

Title:
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