From b5273babb50b6b9699655f2701aac7bf841ffe1b Mon Sep 17 00:00:00 2001
From: Olivier Guyot <olivier.guyot@camptocamp.com>
Date: Sun, 20 Jan 2019 16:32:15 +0100
Subject: [PATCH] View / handle resolutions array with length=1

---
 src/ol/View.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ol/View.js b/src/ol/View.js
index caed07efbb..44a8570620 100644
--- a/src/ol/View.js
+++ b/src/ol/View.js
@@ -971,6 +971,9 @@ class View extends BaseObject {
    */
   getResolutionForZoom(zoom) {
     if (this.resolutions_) {
+      if (this.resolutions_.length <= 1) {
+        return 0;
+      }
       const baseLevel = clamp(Math.floor(zoom), 0, this.resolutions_.length - 2);
       const zoomFactor = this.resolutions_[baseLevel] / this.resolutions_[baseLevel + 1];
       return this.resolutions_[baseLevel] / Math.pow(zoomFactor, clamp(zoom - baseLevel, 0, 1));