🔪 obsolete _xp, _yp from carpet

Author: alexcjohnson

src/traces/carpet/calc.js

@@ -65,10 +65,6 @@ module.exports = function calc(gd, trace) {
     // create conversion functions that depend on the data
     trace.setScale();
 
-    // Convert cartesian-space x/y coordinates to screen space pixel coordinates:
-    t.xp = trace._xp = map2dArray(trace._xp, x, xa.c2p);
-    t.yp = trace._yp = map2dArray(trace._yp, y, ya.c2p);
-
     // This is a rather expensive scan. Nothing guarantees monotonicity,
     // so we need to scan through all data to get proper ranges:
     var xrange = arrayMinmax(x);
@@ -92,8 +88,8 @@ module.exports = function calc(gd, trace) {
 
     // Enumerate the gridlines, both major and minor, and store them on the trace
     // object:
-    calcGridlines(trace, t, 'a', 'b');
-    calcGridlines(trace, t, 'b', 'a');
+    calcGridlines(trace, 'a', 'b');
+    calcGridlines(trace, 'b', 'a');
 
     // Calculate the text labels for each major gridline and store them on the
     // trace object:

src/traces/carpet/calc_gridlines.js

@@ -11,7 +11,7 @@
 var Axes = require('../../plots/cartesian/axes');
 var extendFlat = require('../../lib/extend').extendFlat;
 
-module.exports = function calcGridlines(trace, cd, axisLetter, crossAxisLetter) {
+module.exports = function calcGridlines(trace, axisLetter, crossAxisLetter) {
     var i, j, j0;
     var eps, bounds, n1, n2, n, value, v;
     var j1, v0, v1, d;