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package Chart::Dygraphs; |
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3
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1
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62535
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use strict; |
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44
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6
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use warnings; |
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47
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6
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use utf8; |
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1
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1
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55
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use Exporter 'import'; |
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1
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145
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8
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our @EXPORT_OK = qw(show_plot); |
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10
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1
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1
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1911
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use JSON; |
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32695
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1
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12
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1
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2101
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use Params::Validate qw(:all); |
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15732
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1
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328
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12
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1
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1
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1179
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use Text::Template; |
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6439
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1
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92
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1
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1381
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use HTML::Show; |
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30187
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1
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555
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14
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15
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our $VERSION = '0.005'; # VERSION |
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=encoding utf-8 |
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18
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19
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=head1 NAME |
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20
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21
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Chart::Dygraphs - Generate html/javascript charts from perl data using javascript library Dygraphs |
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=head1 SYNOPSYS |
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use Chart::Dygraphs qw(show_plot); |
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my $data = [map {[$_, rand($_)]} 1..10 ]; |
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show_plot($data); |
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30
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use Chart::Dygraphs qw(show_plot); |
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31
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use DateTime; |
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32
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33
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my $start_date = DateTime->now(time_zone => 'UTC')->truncate(to => 'hour'); |
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my $time_series_data = [map {[$start_date->add(hours => 1)->clone(), rand($_)]} 1..1000]; |
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36
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show_plot($time_series_data); |
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38
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=head1 DESCRIPTION |
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40
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Generate html/javascript charts from perl data using javascript library Dygraphs. The result |
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41
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is html that you could see in your favourite browser. |
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43
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The interface is "sub" oriented, but the API is subject to changes. |
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45
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=head1 FUNCTIONS |
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47
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=cut |
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48
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49
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=head2 render_full_html |
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50
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51
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=head3 Parameters |
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52
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53
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=over |
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54
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55
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=item * data: |
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56
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57
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Data to be represented. The format is the perl version of the data expected by Dygraphs: L |
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58
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59
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=item * options: |
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60
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61
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Hashref with options for graph. The format is the perl version of the options expected by Dygraphs: L |
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62
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Optional |
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63
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64
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=item * render_html_options |
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65
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66
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Hashref with options controlling html output. With this you can inject html, javascript or styles. |
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67
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68
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Supported options: |
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69
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70
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=over |
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71
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72
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=item * pre_graph_html |
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74
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=item * post_graph_html |
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76
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=item * dygraphs_div_id |
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78
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=item * dygraphs_javascript_object_name |
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80
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=item * dygraphs_div_inline_style |
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81
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82
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=back |
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83
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84
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=back |
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85
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86
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=cut |
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87
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88
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sub render_full_html { |
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89
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0
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0
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1
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my %params = validate( @_, |
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90
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{ data => { type => SCALAR | ARRAYREF }, |
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91
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options => { type => HASHREF, default => { showRangeSelector => 1 } }, |
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92
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render_html_options => { |
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type => HASHREF, |
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optional => 1, |
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default => { dygraphs_div_id => 'graphdiv', dygraphs_javascript_object_name => 'g' } |
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96
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} |
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97
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} |
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98
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); |
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100
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0
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my $template = <<'DYGRAPH_TEMPLATE'; |
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101
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102
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103
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104
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107
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108
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109
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{$pre_graph_html} |
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110
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111
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120
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{$post_graph_html} |
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121
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122
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123
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DYGRAPH_TEMPLATE |
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124
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125
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0
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my $transform_data; |
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126
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$transform_data = sub { |
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127
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0
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0
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my $data = shift; |
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128
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0
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my $string_data = ""; |
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129
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0
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0
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if ( ref $data eq 'ARRAY' ) { |
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0
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0
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130
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0
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$string_data .= "[" . ( join( ',', map { $transform_data->($_) } @$data ) ) . "]"; |
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0
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131
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} elsif ( ref $data eq 'HASH' ) { |
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0
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return "not supported"; |
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133
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} elsif ( ref $data eq 'DateTime' ) { |
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0
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return 'new Date("' . $data . '")'; |
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135
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} else { |
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0
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return $data; |
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137
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} |
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138
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0
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return $string_data; |
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139
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0
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}; |
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140
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0
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my $data_string = $transform_data->( $params{'data'} ); |
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141
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142
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0
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my $json_formatter = JSON->new->utf8; |
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143
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my $template_variables = { |
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144
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0
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%{ $params{'render_html_options'} }, |
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145
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0
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data_and_options => join( ',', $data_string, $json_formatter->encode( $params{'options'} ) ), |
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146
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}; |
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147
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148
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0
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0
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if ( !defined $template_variables->{'dygraphs_div_id'} ) { |
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149
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0
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$template_variables->{'dygraphs_div_id'} = 'graphdiv'; |
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150
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} |
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151
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0
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0
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if ( !defined $template_variables->{'dygraphs_javascript_object_name'} ) { |
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152
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0
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$template_variables->{'dygraphs_javascript_object_name'} = 'g'; |
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153
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} |
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154
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155
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0
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return Text::Template::fill_in_string( $template, HASH => $template_variables ); |
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156
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} |
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157
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158
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=head2 show_plot |
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159
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160
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Opens the plot in a browser locally |
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161
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162
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=head3 Parameters |
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163
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164
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Data to be represented. The format is the same as the parameter data in render_full_html |
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165
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166
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=cut |
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167
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168
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sub show_plot { |
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169
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0
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0
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1
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my $data = shift(); |
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170
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0
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HTML::Show::show( render_full_html( data => $data ) ); |
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171
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} |
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172
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173
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1; |
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174
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175
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__END__ |