example for repeatable or non-repeatable values

[MojoFacets.git] / public / facet_graph.js

diff --git a/public/facet_graph.js b/public/facet_graph.js
index 94b009b..21b8dd9 100644 (file)
--- a/public/facet_graph.js
+++ b/public/facet_graph.js
@@ -1,3 +1,12 @@
+$(document).ready( function() {
+
+var count = parseInt( $('#facet-count').text() );
+if ( count > 5000 ) {
+       console.debug( 'skip graph', count );
+       return;
+}
+console.debug( 'drawing graph', count );
+
 var data = {
        x: {
                min: Number.MAX_VALUE,
@@ -5,7 +14,6 @@ var data = {
                range: 0,
                inc: 0,
                inc_bar: 0,
-               inc_px: 0,
                data: [],
                px: [],
                num_labels: 0,
@@ -18,8 +26,6 @@ var data = {
                data: [],
                inc: 0,
                num_labels: 0,
-               labels: [],
-               num_labels: 0,
                label_spacing: 25,
        },
        width: 600,
@@ -78,7 +84,13 @@ ctx.fillStyle = '#ffcc88';
 ctx.moveTo( 0, 0 );
 ctx.beginPath();
 
-for( var i in data.x.data ) {
+var elements = data.x.data.length;
+var step = elements / data.width;
+console.debug( elements, step );
+if ( step < 1 ) step = 1;
+var i_float = 0;
+while( i_float < elements ) {
+       var i = i_float.toFixed();
        var x = data.x.data[i];
        if ( data.numeric ) x = Math.ceil( ( x - data.x.min ) / data.x.range * data.width  );
        var y = Math.ceil( ( data.y.data[i] - data.y.min ) / data.y.range * data.height );
@@ -87,10 +99,11 @@ for( var i in data.x.data ) {
                data.x.px.push( x );
        } else {
                var x_px = i * data.x.inc_bar;
-               console.debug( x_px, y );
+//             console.debug( x_px, y );
                ctx.fillRect( x_px, 0, data.x.inc_bar, -y );
                ctx.strokeRect( x_px, 0, data.x.inc_bar, -y );
        }
+       i_float += step;
 }
 
 ctx.stroke();
@@ -102,14 +115,13 @@ function draw_labels(class_name,axis,size,css_pos,last_css_pos) {
                .css({ width: data.width, height: data.height, position: 'absolute' });
 
        axis.num_labels = Math.round( size / axis.label_spacing );
+       if ( axis.num_labels > axis.range ) axis.num_labels = axis.range;
        axis.inc = Math.ceil( axis.range / axis.num_labels );
-       axis.inc_px = Math.ceil( size / axis.num_labels );
 
-       var pos = 0;
        for( var val = axis.min; val < axis.max ; val += axis.inc ) {
+               var pos = Math.ceil( ( val - axis.min ) / axis.range * size );
                $('<li style="'+css_pos+': '+pos+'px"><span class="line"></span><span class="label">' + val + '</span></li>')
                        .appendTo(labels);
-               pos += axis.inc_px;
        }
 
        $('<li style="'+last_css_pos+'"><span class="line"></span><span class="label">' + axis.max + '</span></li>')
@@ -126,3 +138,4 @@ draw_labels( 'labels-y', data.y, data.height, 'bottom', 'bottom:'+data.height+'p
 
 console.debug( 'data', data );
 
+}); // document.ready