comparison analysis/analysis.js @ 1227:f88e611cd3c7

Created mean test/page plots, element histogram plots. Latex and tables included. Can download charts as PNG

     // Load the Visualization API and the corechart package.
       google.charts.load('current', {'packages':['corechart']});
     chartContext = new Chart();
 }
 
+function arrayMean(values) {
+    var mean = 0;
+    for (var value of values) {
+        mean += value;
+    }
+    mean /= values.length;
+    return mean;
+}
+
+function percentile(values, n) {
+    values.sort( function(a,b) {return a - b;} );
+    // get ordinal rank
+    var rank = Math.min(Math.floor(values.length*n/100), values.length-1);
+    return values[rank];
+}
+
+function arrayMin(array) {
+    // Return the minimum value of an array
+    var min = array[0];
+    for (var value of array) {
+        if (value < min) {
+            min = value;
+        }
+    }
+    return min;
+}
+
+function arrayMax(array) {
+    // Return the minimum value of an array
+    var max = array[0];
+    for (var value of array) {
+        if (value > max) {
+            max = value;
+        }
+    }
+    return max;
+}
+
+function arrayHistogram(values,steps,min,max) {
+    if (steps == undefined) {
+        steps = 0.25;
+        console.log("Warning: arrayHistogram called without steps size set, default to 0.25");
+    }
+    if (min == undefined) {min = arrayMin(values);}
+    if (max == undefined) {max = arrayMax(values);}
+    var histogram = [];
+    var index = min;
+    while(index < max) {
+        histogram.push({
+            marker: index,
+            lt: index,
+            rt: index+steps,
+            count: 0
+        });
+        index += steps;
+    }
+    for (var value of values) {
+        for (var entry of histogram) {
+            if (value >= entry.lt && value <= entry.rt) {
+                entry.count++;
+                break;
+            }
+        }
+    }
+    return histogram;
+}
+
 function Chart() {
     this.valueData = null;
     this.commentData = null;
     this.loadStatus = 0;
+    this.charts = [];
     
     var XMLHttp = new XMLHttpRequest();
     XMLHttp.parent = this;
     XMLHttp.open("GET","../scripts/score_parser.php?format=JSON",true);
     XMLHttp.onload = function() {

         this.parent.commentData = JSON.parse(this.responseText);
         this.parent.loadStatus++;
     }
     XMLHttp2.send();
     
-    this.drawMean = function() {
+    this.chartObject = function(name) {
+        // Create the charting object
+        this.name = name;
+        this.root = document.createElement("div");
+        this.root.className = "chart-holder";
+        this.root.setAttribute("name",name);
+        this.chartDOM = document.createElement("div");
+        this.tableDOM = document.createElement("div");
+        this.latexDOM = document.createElement("div");
+        this.downloadDOM = document.createElement("div");
+        this.chart = undefined;
+        this.data = new google.visualization.DataTable();
+        this.options = {};
+        this.print = document.createElement("button");
+        this.handleEvent = function() {
+            // Only used to handle the chart.event.addListener(this,'ready') callback
+            this.downloadDOM.innerHTML = '<a href="' + this.chart.getImageURI() + '">Download</a>';
+        }
+        
+        this.root.appendChild(this.chartDOM);
+        this.root.appendChild(this.tableDOM);
+        this.root.appendChild(this.latexDOM);
+        this.root.appendChild(this.print);
+        this.print.textContent = "Download";
+        this.print.addEventListener("click",this);
+        this.root.appendChild(this.downloadDOM);
+        this.buildTable = function() {
+            var table = document.createElement("table");
+            table.border = "1";
+            for (var rowIndex=0; rowIndex<this.data.If.length; rowIndex++) {
+                var row = document.createElement("tr");
+                table.appendChild(row);
+                var rowTitle = document.createElement("td");
+                rowTitle.textContent = this.data.If[rowIndex].label;
+                row.appendChild(rowTitle);
+                for (var cIndex=0; cIndex<this.data.cc.length; cIndex++) {
+                    var column = document.createElement("td");
+                    column.textContent = this.data.cc[cIndex][rowIndex].tf;
+                    row.appendChild(column);
+                }
+            }
+            this.tableDOM.appendChild(table);
+        };
+        this.writeLatex = function() {
+            var root = document.createElement("div");
+            root.className = "code";
+            var holder = document.createElement("pre");
+            // Table start
+            var start = document.createElement("p");
+            start.textContent = "\\" + "begin{tabular}{|l|";
+            holder.appendChild(start);
+            for (var i=0; i<this.data.cc.length; i++) {
+                start.textContent = start.textContent+"c|";
+            }
+            // Now write the rows:
+            for (var rIndex=0; rIndex<this.data.If.length; rIndex++) {
+                var row = document.createElement("p");
+                row.textContent = this.data.If[rIndex].label.concat(" & ");
+                for (var cIndex=0; cIndex<this.data.cc.length; cIndex++) {
+                    row.textContent = row.textContent.concat(this.data.cc[cIndex][rIndex].tf);
+                    if (cIndex < this.data.cc.length-1) {
+                        row.textContent = row.textContent.concat(" & ");
+                    }
+                }
+                holder.appendChild(row);
+            }
+            // Table end
+            var end = document.createElement("p");
+            end.textContent = "\\" + "end{tabular}";
+            holder.appendChild(end);
+            root.appendChild(holder);
+            this.latexDOM.appendChild(root);
+        }
+    }
+    
+    this.clear = function() {
+        var inject = document.getElementById("test-pages");
+        for (var chart of this.charts) {
+            inject.removeChild(chart.root);
+        }
+        this.charts = [];
+    }
+    
+    this.drawTestMean = function() {
+        // This draws one bargraph per axis with every test element on
+        if (this.valueData == null) {
+            console.log("Error - Data not loaded");
+            return;
+        }
+        var chartList = [];
+        
+        // Create the data table
+        for (var page of this.valueData.pages) {
+            for (var element of page.elements) {
+                for (var axis of element.axis) {
+                    // Find the axis
+                    var axisChart = chartList.find(function(element,index,array){
+                        if (element.name == this) {return true;} else {return false;}
+                    },"mean-test-"+axis.id);
+                    if (axisChart == null) {
+                        axisChart = new this.chartObject("mean-test-"+axis.id);
+                        axisChart.options = {
+                            'title':'Mean of axis: '+axis.name,
+                            'width':window.innerWidth*0.9,
+                            'height':(window.innerWidth*0.9)/1.77
+                        }
+                        axisChart.data.addColumn('string','id');
+                        axisChart.data.addColumn('number',axis.name);
+                        chartList.push(axisChart);
+                        document.getElementById("test-pages").appendChild(axisChart.root);
+                    }
+                    var mean = arrayMean(axis.values);
+                    axisChart.data.addRow([element.id,mean]);
+                }
+            }
+        }
+        
+        // Build and push charts
+        for (var chart of chartList) {
+            chart.chart = new google.visualization.ColumnChart(chart.chartDOM);
+            chart.chart.draw(chart.data,chart.options);
+            chart.buildTable();
+            chart.writeLatex();
+            this.charts.push(chart);
+        }
+    }
+    
+    this.drawPageMean = function() {
         // First we must get the value data
         if (this.valueData == null) {
             console.log("Error - Data not loaded");
             return;
         }
         // We create one plot per page
         for (var page of this.valueData.pages) {
-            // First, create the chart resulting point
-            var inject = document.createElement("div");
-            document.getElementById("test-pages").appendChild(inject);
+            
+            // Create the chart resulting point
+            var chart = new this.chartObject("mean-page-"+page.id);
+            document.getElementById("test-pages").appendChild(chart.root);
             
             // Create the data table
-            var data = new google.visualization.DataTable();
-            data.addColumn('string','id');
+            chart.data.addColumn('string','id');
             // Get axis labels
             for (var axis of page.elements[0].axis) {
-                data.addColumn('number',axis.name);
+                chart.data.addColumn('number',axis.name);
             }
             var rows = []; // Rows is an array of tuples [col1, col2, col3 ... colN];
             for (var element of page.elements) {
                 var entry = [element.id];
                 for (var i=0; i<page.elements[0].axis.length; i++) {
                     var mean =0;
                     if (i < element.axis.length) {
                         var axis = element.axis[i];
-                        for (var value of axis.values) {
-                            mean += value;
-                        }
-                        mean /= axis.values.length;
+                        mean = arrayMean(axis.values);
                     }
                     entry.push(mean);
                 }
                 rows.push(entry);
             }
-            data.addRows(rows);
-            var options = {'title':'Mean of page: '+page.id,
-                          'width':800,
-                          'height':700};
+            chart.data.addRows(rows);
+            chart.options = {
+                'title':'Mean of page: '+page.id,
+                'width':800,
+                'height':700
+            }
             // Draw the chart
-            var chart = new google.visualization.ColumnChart(inject);
-            chart.draw(data,options);
-        }
-    }
-}
+            chart.chart = new google.visualization.ColumnChart(chart.chartDOM);
+            chart.chart.draw(chart.data,chart.options);
+            chart.buildTable();
+            chart.writeLatex();
+            this.charts.push(chart);
+        }
+    }
+    
+    this.drawElementHistogram = function() {
+        // First we must get the value data
+        if (this.valueData == null) {
+            console.log("Error - Data not loaded");
+            return;
+        }
+        // We create one plot per element, enjoy...
+        for (var page of this.valueData.pages) {
+            for (var element of page.elements) {
+                // Build the chart object
+                var chart = new this.chartObject("histogram-element-"+element.id);
+                document.getElementById("test-pages").appendChild(chart.root);
+                chart.data.addColumn('string','index');
+                var histograms = [];
+                for (var axis of element.axis) {
+                    chart.data.addColumn('number',axis.name);
+                    histograms.push(arrayHistogram(axis.values,0.125,0.0,1.0));
+                }
+                for (var axis of element.axis) {
+                    for (var i=0; i<histograms[0].length; i++)
+                    {
+                        var entry = [""+histograms[0][i].lt.toPrecision(2)+"-"+histograms[0][i].rt.toPrecision(3)]
+                        for (var histogram of histograms) {
+                            entry.push(histogram[i].count);
+                        }
+                        chart.data.addRow(entry);
+                    }
+                }
+                chart.options = {
+                    'title':'Histogram of element: '+element.id,
+                    'width':800,
+                    'height':700,
+                    'bar':{'groupWidth': '100%'}
+                }
+                // Draw the chart
+                chart.chart = new google.visualization.ColumnChart(chart.chartDOM);
+                chart.chart.draw(chart.data,chart.options);
+                chart.buildTable();
+                chart.writeLatex();
+                this.charts.push(chart);
+            }
+        }
+    }
+}