From: Robert Konigsberg <konigsberg@google.com>
Date: Fri, 28 Jan 2011 15:54:45 +0000 (-0500)
Subject: More correct tickmarks for logs. They don't look as pretty but they respect the numbe... 
X-Git-Tag: v1.0.0~587^2~12^2~8
X-Git-Url: https://adrianiainlam.tk/git/?a=commitdiff_plain;h=7bba83d8116f0712e57ee4bf57e40ef3c749f3ff;p=dygraphs.git

More correct tickmarks for logs. They don't look as pretty but they respect the number of tickmarks requested.
---

diff --git a/dygraph.js b/dygraph.js
index 0390a6f..e19acad 100644
--- a/dygraph.js
+++ b/dygraph.js
@@ -1948,11 +1948,14 @@ Dygraph.numericTicks = function(minV, maxV, self, axis_props, vals) {
       // NOTE(konigsberg): Dan, should self.height_ be self.plotter_.area.h?
       var nTicks  = Math.floor(self.height_ / pixelsPerTick);
       var vv = minV;
-
+      var lmv = Dygraph.log10(minV);
+      var lxv = Dygraph.log10(maxV);
+      var logMultiplier = (lxv - lmv) / nTicks;
+      var multiplier = Math.pow(Dygraph.LOG_SCALE, logMultiplier);
       // Construct the set of ticks.
       for (var i = 0; i < nTicks; i++) {
         ticks.push( {v: vv} );
-        vv = vv * Dygraph.LOG_SCALE;
+        vv = vv * multiplier;
       }
     } else {
       // Basic idea: