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With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.
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use strict;
use warnings;
use GD::Graph;
use GD::Graph::lines;
use DBI;
use Config::IniFiles;
my $uid = "<db_username>";
my $pwd = "<db_password>";
my $svr = "<db_server>";
my $str = "DBI:Sybase:" . $svr;
# Establish database connections
#
my $db = DBI->connect($str, $uid, $pwd) or die "Cannot log into the DB server.\n";
my $sql = "<tested db query>";
my $st = $db->prepare($sql) or die "Cannot prepare SQL statement.\n";
$st->execute() or die "Cannot execute SQL statement.\n";
my @graphData;
my @dt = [];
my @qty = [];
my @avg = [];
while (@graphData = $st->fetchrow_array()) {
push(@dt, $graphData[0]);
push(@qty, $graphData[1]);
push(@avg, $graphData[2]);
}
#
# This array/list works:
#
my @data = (
["1st","2nd","3rd","4th","5th","6th","7th", "8th", "9th"],
[ 1, 2, 5, 6, 3, 1.5, 1, 3, 4]
);
#
# ... but this produces the error:
#my @data = (@dt, @qty);
#
my $graph = GD::Graph::lines->new(400, 300);
$graph->set(
x_label => 'X Label',
y_label => 'Y label',
title => 'Some simple graph'
) or die $graph->error;
my $gd = $graph->plot(\@data) or die $graph->error;
open(IMG, '>file.gif') or die $!;
binmode IMG;
print IMG $gd->gif;
close IMG;
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