assume that domain defaults are always present

Author: monfera

src/traces/parcoords/parcoords.js

@@ -144,8 +144,8 @@ function model(layout, d, i, a) {
         tickDistance: c.tickDistance,
         unitToColor: unitToColorScale(d.line.colorscale, d.line.cmin, d.line.cmax, d.line.color),
         lines: lines,
-        translateX: (d.domain.x[0] || 0) * layout.width,
-        translateY: layout.height - (d.domain.y[1] || 1) * layout.height,
+        translateX: d.domain.x[0] * layout.width,
+        translateY: layout.height - d.domain.y[1] * layout.height,
         pad: pad,
         canvasWidth: rowContentWidth * c.canvasPixelRatio + 2 * lines.canvasOverdrag,
         canvasHeight: rowHeight * c.canvasPixelRatio,