Merge pull request #6787 from plotly/fix6770-scattergl-legend-marker-angles

fix scattergl legend with marker angle array

Author: archmoj

draftlogs/6787_fix.md

@@ -0,0 +1 @@
+ - Fix `scattergl` legend when `marker.angle` is an array [[#6787](https://github.com/plotly/plotly.js/pull/6787)]

src/components/drawing/index.js

@@ -1607,7 +1607,10 @@ function getMarkerAngle(d, trace) {
     var angle = d.ma;
 
     if(angle === undefined) {
-        angle = trace.marker.angle || 0;
+        angle = trace.marker.angle;
+        if(!angle || Lib.isArrayOrTypedArray(angle)) {
+            angle = 0;
+        }
     }
 
     var x, y;

test/image/baselines/gl2d_period_positioning.png

@@ -3,6 +3,11 @@
         {
             "name": "scattergl",
             "type": "scattergl",
+            "marker": {
+                "size": 20,
+                "symbol": "arrow-wide",
+                "angle": [150, -30, 150, -30, 150, -30]
+            },
             "x": ["2001-01-01", "2002-01-01", "2003-01-01", "2004-01-01", "2005-01-01", "2006-01-01"],
             "y": ["1970-01-01", "1970-02-01", "1970-03-01", "1970-04-01", "1970-05-01", "1970-06-01"],
             "xperiod": "M12",