Hi,

I made a perl mod called regression that takes a pointer to a hash of x,y data pairs when it is blessed. I tested it with a simple program and verified that it runs with that program. Here is part of the simple program code…

my %raw_data = (
    1    =>    100,
    2    =>    160,
    2.5    =>    182,
    3    =>    225
    );


my $regr = regression->new(\%raw_data);
print '$regr= ', Dumper($regr);

$mean_x = $regr->get_mean_x;
print '$mean_x= ', Dumper($mean_x);

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and here is some of the output. (The numbers are all correct.) 

$regr= $VAR1 = bless( {
                 'mean_y' => '166.75',
                 'raw_data' => {
                                 '1' => 100,
                                 '3' => 225,
                                 '2' => 160,
                                 '2.5' => 182
                               },
                 'slope' => '60.6285714285714',
                 'mean_x' => '2.125',
                 'y_intercept' => '37.9142857142857'
               }, 'regression' );

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Well, I try it with a work example, which requires a more complicated hash structure.

Here is where the hash is populated: 

        $raw_dataPtr = \%{$element_stats_hash{$element_name}{'raw_data
+'}};
        $$raw_dataPtr{$time} = {$var};

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So, the hash key is set to the values in variable $time and the hash value is set to values in variable $var.

Here is where the object is blessed into existence: 

    #$regr = regression->new(\%{$element_stats_hash{$element_name}{'ra
+w_data'}});
    $regr = regression->new(\%{$element_stats_hash{$element_name}});
    print TEST '$regr= ', Dumper($regr);

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I have also tried this: 

    $regr = regression->new(\%{$element_stats_hash{$element_name}});
    print TEST '$regr= ', Dumper($regr);

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Here is the output of the class’s hash data structure (either way): 

'raw_data' => {
                                                 '1229265435' => {
                                                                   '0.
+12205589' => undef
                                                                 },
                                                 '1229299036' => {
                                                                   '0.
+71940041' => undef
                                                                 },
                                                 '1229317107' => {
                                                                   '1.
+22392523' => undef
                                                                 },

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Of course, I WANT it to look like this: 

'raw_data' => {
                                                 '1229265435' => '0.12
+205589',
                                                 '1229299036' => '0.71
+940041',
                                            '1229317107' => '1.2239252
+3'
                                                                 },

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and I just cannot seem to understand what is going on here. Might someone be able to explain to me what I need to do in order to get the hash in the class to look like I want it to? And can someone explain what is presently going on?

Many thanks in advance.

Tony

In reply to Confounded With A Simple Self-Made Perl Mod by o2bwise

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