From 2ffae03b7157675438290df8f598e1f9781765c6 Mon Sep 17 00:00:00 2001
From: Kelly Innes <kinnes@azavea.com>
Date: Thu, 10 Aug 2017 12:25:27 -0400
Subject: [PATCH] fixup adjust tick count for small values

---
 src/mmw/js/src/core/chart.js | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/src/mmw/js/src/core/chart.js b/src/mmw/js/src/core/chart.js
index 3a97b0c90..a236e4e02 100644
--- a/src/mmw/js/src/core/chart.js
+++ b/src/mmw/js/src/core/chart.js
@@ -335,7 +335,8 @@ function renderCompareMultibarChart(chartEl, name, label, colors, stacked, data,
         chart.width(chartEl.offsetWidth);
     }
 
-    var yDomainMax = 1;
+    var yDomainMax = 1,
+        tickCount = 3;
 
     if (!stacked) {
         var maxValue = data.length ?
@@ -346,8 +347,16 @@ function renderCompareMultibarChart(chartEl, name, label, colors, stacked, data,
         if (maxValue) {
             yDomainMax = maxValue * 1.2;
         }
+
+        if (maxValue <= 0.1) {
+            tickCount = 1;
+        }
     } else {
-        yDomainMax = precipitation || 1;
+        if (precipitation) {
+            yDomainMax = precipitation;
+        } else {
+            tickCount = 1;
+        }
     }
 
     nv.addGraph(function() {
@@ -363,9 +372,11 @@ function renderCompareMultibarChart(chartEl, name, label, colors, stacked, data,
              .id(name)
              .yDomain([0, yDomainMax]);
 
+
+
         chart.yAxis
              .axisLabel(label)
-             .ticks(3)
+             .ticks(tickCount)
              .showMaxMin(true);
 
         chart.tooltip.enabled(false);