From 46a1c7461b4ce5f1bfc165b16e25728dfd439a2d Mon Sep 17 00:00:00 2001
From: James Cook <james.cook@utoronto.ca>
Date: Wed, 7 Mar 2012 15:55:24 -0800
Subject: [PATCH] GraphProperties: log scale.

---
 src/recommend/analysis/GraphProperties.java | 11 ++++--
 viz/GraphProperties.js                      | 44 +++++++++++++++++++--
 2 files changed, 47 insertions(+), 8 deletions(-)

diff --git a/src/recommend/analysis/GraphProperties.java b/src/recommend/analysis/GraphProperties.java
index 865fb92..589703a 100644
--- a/src/recommend/analysis/GraphProperties.java
+++ b/src/recommend/analysis/GraphProperties.java
@@ -45,10 +45,13 @@ void report(String msg) {
         appendHtml("<p>" + StringEscapeUtils.escapeHtml(msg) + "</p>\n");
     }
 
-    void reportPlot(DoubleMatrix1D values) {
+    void reportPlot(DoubleMatrix1D values, boolean logX, boolean logY) {
         appendHtml("<div class=\"plot_me\">");
-        for (int i = 0; i < values.size(); ++i)
-            appendHtml(" " + values.get(i));
+        if (logX) appendHtml("s:logX ");
+        if (logY) appendHtml("s:logY ");
+        for (int i = 0; i < values.size(); ++i) {
+            appendHtml((0 == i ? "" : " ") + i + "," + (values.get(i) + 2.0));
+        }
         appendHtml("</div>\n");
     }
 
@@ -73,7 +76,7 @@ void dynMain(String[] argv) throws Throwable {
 
         DoubleMatrix1D termFreqs = algebra.mult(termDoc, ones(numDocs));
         report("Sorted term frequencies:");
-        reportPlot(termFreqs.viewSorted());
+        reportPlot(termFreqs.viewSorted(), false, true);
 
         endReport();
     }
diff --git a/viz/GraphProperties.js b/viz/GraphProperties.js
index defd9bc..697a5d8 100644
--- a/viz/GraphProperties.js
+++ b/viz/GraphProperties.js
@@ -1,12 +1,48 @@
 var GraphProperties = (function(){
-    main = function() {
+    var logt = function (x) { return Math.log(x); };
+    var expt = function (x) { return Math.exp(x); };
+    var logTicks = function(axis) {
+        var t;
+        var res = [];
+        var logMin = Math.log(axis.min);
+        var logMax = Math.log(axis.max);
+        for (t = 0.0; t <= 1.0; t += 0.25) {
+            res.push(Math.exp(logMin * (1.0 - t) + logMax * t));
+        }
+        return res;
+    }
+
+    var main = function() {
         var toPlot = $(".plot_me");
         toPlot.css("width", "512px");
         toPlot.css("height", "256px");
         toPlot.each(function (index, div) {
-            valueStrs = $(div).text().split(" ").filter(function (x) { return 0 != x.length; });
-            values = valueStrs.map(function (x, index) { return [index, parseFloat(x)]; });
-            $.plot($(div), [values]);
+            var pointStrs = $(div).text().split(" ");
+            var points = [];
+            var mins = [Infinity, Infinity];
+            var maxs = [-Infinity, -Infinity];
+            var logX = false;
+            var logY = false;
+            var i;
+            for (i = 0; i < pointStrs.length; ++i) {
+                s = pointStrs[i];
+                if ("s:logX" == s)
+                    logX = true;
+                else if ("s:logY" == s)
+                    logY = true;
+                else {
+                    p = s.split(",").map(function (x, i) {
+                        mins[i] = Math.min(mins[i], x);
+                        maxs[i] = Math.max(maxs[i], x);
+                        return parseFloat(x);
+                    });
+                    points.push(p);
+                }
+            }
+            $.plot($(div), [points], {
+                xaxis: logX ? {transform: logt, inverseTransform: expt, min: mins[0], max: maxs[0], ticks: logTicks} : {},
+                yaxis: logY ? {transform: logt, inverseTransform: expt, min: mins[1], max: maxs[1], ticks: logTicks} : {}
+            });
         });
     }