Merge pull request #4087 from plotly/fix4086-parcoords-stick-range

Bug fix parcoords - selecting lines outside displayed range axis

Author: archmoj

src/traces/parcoords/axisbrush.js

@@ -266,12 +266,6 @@ function attachDragBehavior(selection) {
                     s.newExtent = [s.startExtent, d.unitToPaddedPx.invert(y)].sort(sortAsc);
                 }
 
-                // take care of the parcoords axis height constraint: bar can't breach it
-                var bottomViolation = Math.max(0, -s.newExtent[0]);
-                var topViolation = Math.max(0, s.newExtent[1] - 1);
-                s.newExtent[0] += bottomViolation;
-                s.newExtent[1] -= topViolation;
-
                 d.brush.filterSpecified = true;
                 s.extent = s.stayingIntervals.concat([s.newExtent]);
                 s.brushCallback(d);

src/traces/parcoords/lines.js

@@ -225,9 +225,11 @@ function makeItem(model, leftmost, rightmost, itemNumber, i0, i1, x, y, panelSiz
 
 function expandedPixelRange(bounds) {
     var dh = maskHeight - 1;
+    var a = Math.max(0, Math.floor(bounds[0] * dh), 0);
+    var b = Math.min(dh, Math.ceil(bounds[1] * dh), dh);
     return [
-        Math.max(0, Math.floor(bounds[0] * dh), 0),
-        Math.min(dh, Math.ceil(bounds[1] * dh), dh)
+        Math.min(a, b),
+        Math.max(a, b)
     ];
 }