<?php
 function ch_archive_graph($args = ''){
 global $wpdb, $wp_locale;

 //template tag defaults
 $defaults = array(
 'graphYear' => '2007',
 'limit' => '13',
 'graphHeight' => '200',
 'xIncrement' => '55'
 );

 $maxHeight = 1;
 $scale = 1;

 $r = wp_parse_args( $args, $defaults );
 extract( $r, EXTR_SKIP );

 if ( '' != $limit ) {
 $limit = absint($limit + 1);
 $limit = ' LIMIT '.$limit;
 }

 $where = apply_filters('getarchives_where', "WHERE post_type = 'post' AND post_status = 'publish'", $r );

 $query = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, count(ID) as posts FROM $wpdb->posts $where GROUP BY YEAR(post_date), MONTH(post_date) ORDER BY post_date DESC $limit";
 $key = md5($query);
 $cache = wp_cache_get( 'ch_archive_graph' , 'general');

 $output = '<dl class="barGraph '.$graphYear.'">';

 if ( !isset( $cache[ $key ] ) ) {
 $arcresults = $wpdb->get_results($query);
 $cache[ $key ] = $arcresults;
 wp_cache_add( 'ch_archive_graph', $cache, 'general' );
 } else {
 $arcresults = $cache[ $key ];
 }
 if ( $arcresults ) {

 //Loop through to find the highest number of posts
 foreach ( (array) $arcresults as $arcresult ) {
 //number of posts in a month
 $total = $arcresult->posts;
 if($maxHeight < $total) $maxHeight = $total;
 }

 //Reverse the months
 $arcresults = array_reverse($arcresults);
 foreach ( (array) $arcresults as $arcresult ) {
 //Limit to one year
 if($arcresult->year == $graphYear){
 //Get month name, then appreviate, delete the second line if you want full month names
 $month = sprintf(__('%1$s'), $wp_locale->get_month($arcresult->month));
 $month = sprintf(__('%1$s'), $wp_locale->get_month_abbrev($month));
 //Get archive link
 $url = get_month_link( $arcresult->year, $arcresult->month );
 //Number of posts in the month
 $num_posts = $arcresult->posts;

 //Determine the scale and the height of the bar
 $scale = $graphHeight / $maxHeight;
 $height = ($arcresult->posts * $scale);

 //Put it all together
 $output .= "<dt class='label' style='left: ".$xOffset."px;'><a href=".$url.">".$month."</a></dt>";
 $output .= "<dd class='bar ".$month."' style='height: ".$height."px; left: ".$xOffset."px;' title=".$month.">".$num_posts."</dd>";

 //Increase the offset for the next bar
 $xOffset = $xOffset + $xIncrement;
 }
 }
 }

 $output .= "</dl>";
 echo $output;

 }