Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic
 
PerlMonks  

comment on

( [id://3333] : superdoc . print w/replies, xml ) Need Help??
I am trying to use the GD::Graph module to plot a chart that will have militay hour number on the x-axis and a count on the y-axis. I have indexes for my hash table for 'hour' and 'count'. I would like to use the GD::Graph::lines function. Below is the example code that I am trying to plot my data but it gives me errors.
# This is the original data from the perldoc examples # @data=(["1st","2nd","3rd"], # [9,4,7]); # I have a hash table with $data[$index]{'hour'} and $data[$index]{'c +ount'} # $graph= GD::Graph::lines->new(400,300); $graph->set( x_label => 'Hour', y_label => 'Transaction Volume', title => 'Number of transactions per hour', y_max_value => 20, y_label_skip => 1, y_tick_number => 1); $gd = $graph->plot(\@data); open (IMG,'>file.png') or die $!; binmode IMG; print IMG $gd->png; close IMG;
Any ideas? Thanks in advance!!

In reply to Question about using hash indexes with GD::Graph by vonman

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.