Question

How to split the following array so that i can get lon and lat points only every time ? In perl Script ?

[{"lon":77.594376,"lat":12.971606,"bfg":18000,"xyz":null,"jky":null},{"lon":77.604376,"lat":12.980606,"bfg":18000,"xyz":null,"jky":null},{"lon":77.674376,"lat":12.981606,"bfg":18000,"xyz":null,"jky":null},{"lon":77.684376,"lat":12.982606,"bfg":18000,"xyz":null,"jky":null},{"lon":77.744376,"lat":12.983606,"bfg":18000,"xyz":null,"jky":null},{"lon":77.784376,"lat":12.990606,"bfg":18000,"xyz":null,"jky":null},{"lon":77.804376,"lat":12.991606,"bfg":18000,"xyz":null,"jky":null},{"lon":77.824376,"lat":12.995606,"bfg":18000,"xyz":null,"jky":null},{"lon":77.874376,"lat":12.997606,"bfg":18000,"xyz":null,"jky":null},{"lon":77.894376,"lat":12.999606,"bfg":18000,"xyz":null,"jky":null}]

Any help ?

Answer 1

I’d recommend using a JSON library as well, but if it’s just a one off, you could do something like this:

#!/usr/bin/env perl
use strict;
use warnings;
use Data::Dumper;

my @data;

while (<DATA>) {
    if (/"lon":([^,]+),"lat":([^,]+)/) {
        push @data, [$1, $2];
    }
}

print Dumper \@data;

__DATA__
[{"lon":77.594376,"lat":12.971606,"bfg":18000,"xyz":null,"jky":null},{"lon":77.604376,"lat":12.980606,"bfg":18000,"xyz":null,"jky":null},"lon":77.674376,"lat":12.981606,"bfg":18000,"xyz":null,"jky":null},"lon":77.684376,"lat":12.982606,"bfg":18000,"xyz":null,"jky":null},"lon":77.744376,"lat":12.983606,"bfg":18000,"xyz":null,"jky":null},"lon":77.784376,"lat":12.990606,"bfg":18000,"xyz":null,"jky":null},"lon":77.804376,"lat":12.991606,bfg":18000,"xyz":null,"jky":null},"lon":77.824376,"lat":12.995606,"bfg":18000,"xyz":null,"jk":null},{"lon":77.874376,"lat":12.997606,"bfg":18000,"xyz":null,"jky":null},"lon":77.894376,"lat":12999606,"bfg":18000,"xyz":null,"jky":null}]

Result:

$VAR1 = [
      [
        '77.594376',
        '12.971606'
      ],
      [
        '77.674376',
        '12.981606'
      ],
      [
        '77.744376',
        '12.983606'
      ],
      [
        '77.804376',
        '12.991606'
      ],
      [
        '77.874376',
        '12.997606'
      ],
      [
        '77.894376',
        '12.999606'
      ]
    ];