X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=dygraph-layout.js;h=befffd6e39701dab17d9c36d620d9d882f25d537;hb=ebf77a9fa6953523975f7ee608a05e1c66c43e47;hp=7a056e9aabf0c24c2d670aaeaa9b045bb640d951;hpb=ee60939f4e2238cbb64ebbe7acdc27195c149cfb;p=dygraphs.git

diff --git a/dygraph-layout.js b/dygraph-layout.js
index 7a056e9..befffd6 100644
--- a/dygraph-layout.js
+++ b/dygraph-layout.js
@@ -175,6 +175,7 @@ DygraphLayout.prototype.setYAxes = function (yAxes) {
 };
 
 DygraphLayout.prototype.evaluate = function() {
+  this._xAxis = {};
   this._evaluateLimits();
   this._evaluateLineCharts();
   this._evaluateLineTicks();
@@ -183,11 +184,15 @@ DygraphLayout.prototype.evaluate = function() {
 
 DygraphLayout.prototype._evaluateLimits = function() {
   var xlimits = this.dygraph_.xAxisRange();
-  this.minxval = xlimits[0];
-  this.maxxval = xlimits[1];
+  this._xAxis.minval = xlimits[0];
+  this._xAxis.maxval = xlimits[1];
   var xrange = xlimits[1] - xlimits[0];
-  this.xscale = (xrange !== 0 ? 1 / xrange : 1.0);
+  this._xAxis.scale = (xrange !== 0 ? 1 / xrange : 1.0);
 
+  if (this.dygraph_.getOptionForAxis("logscale", 'x')) {
+    this._xAxis.xlogrange = Dygraph.log10(this._xAxis.maxval) - Dygraph.log10(this._xAxis.minval);
+    this._xAxis.xlogscale = (this._xAxis.xlogrange !== 0 ? 1.0 / this._xAxis.xlogrange : 1.0);
+  }
   for (var i = 0; i < this.yAxes_.length; i++) {
     var axis = this.yAxes_[i];
     axis.minyval = axis.computedValueRange[0];
@@ -195,7 +200,7 @@ DygraphLayout.prototype._evaluateLimits = function() {
     axis.yrange = axis.maxyval - axis.minyval;
     axis.yscale = (axis.yrange !== 0 ? 1.0 / axis.yrange : 1.0);
 
-    if (axis.g.getOption("logscale")) {
+    if (this.dygraph_.getOption("logscale")) {
       axis.ylogrange = Dygraph.log10(axis.maxyval) - Dygraph.log10(axis.minyval);
       axis.ylogscale = (axis.ylogrange !== 0 ? 1.0 / axis.ylogrange : 1.0);
       if (!isFinite(axis.ylogrange) || isNaN(axis.ylogrange)) {
@@ -207,7 +212,21 @@ DygraphLayout.prototype._evaluateLimits = function() {
   }
 };
 
-DygraphLayout._calcYNormal = function(axis, value, logscale) {
+DygraphLayout.calcXNormal_ = function(value, xAxis, logscale) {
+  if (logscale) {
+    return ((Dygraph.log10(value) - Dygraph.log10(xAxis.minval)) * xAxis.xlogscale);
+  } else {
+    return (value - xAxis.minval) * xAxis.scale;
+  }
+};
+
+/**
+ * @param {DygraphAxisType} axis
+ * @param {number} value
+ * @param {boolean} logscale
+ * @return {number}
+ */
+DygraphLayout.calcYNormal_ = function(axis, value, logscale) {
   if (logscale) {
     var x = 1.0 - ((Dygraph.log10(value) - Dygraph.log10(axis.minyval)) * axis.ylogscale);
     return isFinite(x) ? x : NaN;  // shim for v8 issue; see pull request 276
@@ -218,6 +237,7 @@ DygraphLayout._calcYNormal = function(axis, value, logscale) {
 
 DygraphLayout.prototype._evaluateLineCharts = function() {
   var isStacked = this.dygraph_.getOption("stackedGraph");
+  var isLogscaleForX = this.dygraph_.getOptionForAxis("logscale", 'x');
 
   for (var setIdx = 0; setIdx < this.points.length; setIdx++) {
     var points = this.points[setIdx];
@@ -231,11 +251,11 @@ DygraphLayout.prototype._evaluateLineCharts = function() {
       var point = points[j];
 
       // Range from 0-1 where 0 represents left and 1 represents right.
-      point.x = (point.xval - this.minxval) * this.xscale;
+      point.x = DygraphLayout.calcXNormal_(point.xval, this._xAxis, isLogscaleForX);
       // Range from 0-1 where 0 represents top and 1 represents bottom
       var yval = point.yval;
       if (isStacked) {
-        point.y_stacked = DygraphLayout._calcYNormal(
+        point.y_stacked = DygraphLayout.calcYNormal_(
             axis, point.yval_stacked, logscale);
         if (yval !== null && !isNaN(yval)) {
           yval = point.yval_stacked;
@@ -247,34 +267,20 @@ DygraphLayout.prototype._evaluateLineCharts = function() {
           point.yval = NaN;
         }
       }
-      point.y = DygraphLayout._calcYNormal(axis, yval, logscale);
+      point.y = DygraphLayout.calcYNormal_(axis, yval, logscale);
     }
 
     this.dygraph_.dataHandler_.onLineEvaluated(points, axis, logscale);
   }
 };
 
-/**
- * Optimized replacement for parseFloat, which was way too slow when almost
- * all values were type number, with few edge cases, none of which were strings.
- */
-DygraphLayout.parseFloat_ = function(val) {
-  // parseFloat(null) is NaN
-  if (val === null) {
-    return NaN;
-  }
-
-  // Assume it's a number or NaN. If it's something else, I'll be shocked.
-  return val;
-};
-
 DygraphLayout.prototype._evaluateLineTicks = function() {
   var i, tick, label, pos;
   this.xticks = [];
   for (i = 0; i < this.xTicks_.length; i++) {
     tick = this.xTicks_[i];
     label = tick.label;
-    pos = this.xscale * (tick.v - this.minxval);
+    pos = this.dygraph_.toPercentXCoord(tick.v);
     if ((pos >= 0.0) && (pos < 1.0)) {
       this.xticks.push([pos, label]);
     }