fixup histogram & histogram2d hover

Author: archmoj

src/traces/histogram/hover.js

@@ -26,8 +26,12 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
         var posLetter = trace.orientation === 'h' ? 'y' : 'x';
         var pp = instanceOrPeriod(pointData, trace, posLetter);
         var ax = pointData[posLetter + 'a'];
-        var label = hoverLabelText(ax, di.ph0, di.ph1);
-        if(pp[1] !== undefined) label += ' - ' + hoverLabelText(ax, pp[0], pp[1]);
+        var label;
+        if(pp[1] !== undefined) {
+            label = hoverLabelText(ax, pp[0], pp[1]);
+        } else {
+            label = hoverLabelText(ax, di.ph0, di.ph1);
+        }
         pointData[posLetter + 'Label'] = label;
     }
 

src/traces/histogram2d/hover.js

@@ -31,16 +31,24 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode, hoverLay
     var x1 = xRange[1];
     var xx = instanceOrPeriod(pointData, trace, 'x');
     var xa = pointData.xa;
-    var xLabel = hoverLabelText(xa, x0, x1);
-    if(xx[1] !== undefined) xLabel = hoverLabelText(xa, xx[0], xx[1]);
+    var xLabel;
+    if(xx[1] !== undefined) {
+        xLabel = hoverLabelText(xa, xx[0], xx[1]);
+    } else {
+        xLabel = hoverLabelText(xa, x0, x1);
+    }
     pointData.xLabel = xLabel;
 
     var y0 = yRange[0];
     var y1 = yRange[1];
     var yy = instanceOrPeriod(pointData, trace, 'y');
     var ya = pointData.ya;
-    var yLabel = hoverLabelText(ya, y0, y1);
-    if(yy[1] !== undefined) yLabel = hoverLabelText(ya, yy[0], yy[1]);
+    var yLabel;
+    if(yy[1] !== undefined) {
+        yLabel = hoverLabelText(ya, yy[0], yy[1]);
+    } else {
+        yLabel = hoverLabelText(ya, y0, y1);
+    }
     pointData.yLabel = yLabel;
 
     return pts;