Merge pull request #1422 from plotly/geo-aitoff-sinusoidal

Add Aitoff and Sinusoidal projection types

Author: etpinard

src/plots/geo/constants.js

@@ -33,7 +33,9 @@ params.projNames = {
     'hammer': 'hammer',
     'transverse mercator': 'transverseMercator',
     'albers usa': 'albersUsa',
-    'winkel tripel': 'winkel3'
+    'winkel tripel': 'winkel3',
+    'aitoff': 'aitoff',
+    'sinusoidal': 'sinusoidal'
 };
 
 // name of the axes

src/plots/geo/geo.js

@@ -89,7 +89,7 @@ proto.plot = function(geoCalcData, fullLayout, promises) {
         var mouse = d3.mouse(this),
             lonlat = _this.projection.invert(mouse);
 
-        if(isNaN(lonlat[0]) || isNaN(lonlat[1])) return;
+        if(!lonlat || isNaN(lonlat[0]) || isNaN(lonlat[1])) return;
 
         var evt = {
             target: true,