From 7b84bce5770a0738a7d18ddf7b2f424f2c1a9fe7 Mon Sep 17 00:00:00 2001
From: Dmitrii Arnautov <dmitrii.arnautov@elastic.co>
Date: Wed, 16 Oct 2019 16:32:08 +0200
Subject: [PATCH] [ML] fallback to the lower of the model plot results for y
 axis

---
 .../components/timeseries_chart/timeseries_chart.js    | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/x-pack/legacy/plugins/ml/public/timeseriesexplorer/components/timeseries_chart/timeseries_chart.js b/x-pack/legacy/plugins/ml/public/timeseriesexplorer/components/timeseries_chart/timeseries_chart.js
index e078a04213462..81852f025fb1f 100644
--- a/x-pack/legacy/plugins/ml/public/timeseriesexplorer/components/timeseries_chart/timeseries_chart.js
+++ b/x-pack/legacy/plugins/ml/public/timeseriesexplorer/components/timeseries_chart/timeseries_chart.js
@@ -587,7 +587,15 @@ const TimeseriesChartIntl = injectI18n(class TimeseriesChart extends React.Compo
           // If an anomaly coincides with a gap in the data, use the anomaly actual value.
           metricValue = Array.isArray(d.actual) ? d.actual[0] : d.actual;
         }
-        return d.lower !== undefined ? Math.min(metricValue, d.lower) : metricValue;
+        if (d.lower !== undefined) {
+          if (metricValue !== null && metricValue !== undefined) {
+            return Math.min(metricValue, d.lower);
+          } else {
+            // Set according to the minimum of the lower of the model plot results.
+            return d.lower;
+          }
+        }
+        return metricValue;
       });
       yMax = d3.max(combinedData, (d) => {
         let metricValue = d.value;