2 min_x: Number.MAX_VALUE,
3 max_x: Number.MIN_VALUE,
4 min_y: Number.MAX_VALUE,
5 max_y: Number.MIN_VALUE,
14 var ul = $('ul#facet');
16 ul.find('li label').each( function(){
17 var v = parseFloat( $(this).text() );
18 if ( isNaN(v) ) v = 0;
19 if ( v > data.max_x ) data.max_x = v;
20 if ( v < data.min_x ) data.min_x = v;
21 data.x_data.push( v );
24 ul.find('li span.count').each( function(){
25 var v = parseFloat( $(this).text() ); // FIXME not numeric!
26 if ( isNaN(v) ) v = 0;
27 if ( v > data.max_y ) data.max_y = v;
28 if ( v < data.min_y ) data.min_y = v;
29 data.y_data.push( v );
33 data.x_range = data.max_x - data.min_x;
34 data.y_range = data.max_y - data.min_y;
37 var y_num_labels = Math.round( data.height / 20 ); // padding between vertical labels
38 var y_inc = Math.ceil( data.y_range / y_num_labels );
40 var y_pos = data.min_y;
41 while( y_pos < data.max_y - y_inc ) {
42 data.y_labels.push( y_pos );
45 data.y_labels.push( data.max_y );
47 console.debug( 'data', data );
49 var canvas = $('<canvas/>');
56 var canvasContain = $('<div class="chart"></div>')
57 .css({ width: data.width, height: data.height })
61 var ctx = canvas[0].getContext('2d');
62 ctx.translate( 0, data.height ); // start at bottom left
64 ctx.strokeStyle = '#ff8800';
69 for( var i in data.x_data ) {
70 var x = Math.ceil( ( data.x_data[i] - data.min_x ) / data.x_range * data.width );
71 var y = Math.ceil( ( data.y_data[i] - data.min_y ) / data.y_range * data.height );
72 console.debug( i, x, y );
80 var labels_x = $('<ul class="labels-x"></ul>')
81 .css({ width: data.width, height: data.height, position: 'absolute' });
83 for( var i in data.x_data ) {
84 $('<li><span class="line"></span><span class="label">' + data.x_data[i] + '</span></li>')
85 .css({ left: data.x_px[i] })
88 labels_x.appendTo(canvasContain);
90 var labels_y = $('<ul class="labels-y"></ul>')
91 .css({ width: data.width, height: data.height, position: 'absolute' });
93 for( var i in data.y_labels ) {
94 $('<li><span class="line"></span><span class="label">' + data.y_labels[i] + '</span></li>')
95 .css({ bottom: Math.ceil( data.y_labels[i] / data.y_range * data.height ) })
98 labels_y.appendTo(canvasContain);