allow typedArrays to be used in axis tickvals

Author: archmoj

src/plots/cartesian/tick_value_defaults.js

@@ -9,6 +9,7 @@
 'use strict';
 
 var cleanTicks = require('./clean_ticks');
+var isArrayOrTypedArray = require('../../lib').isArrayOrTypedArray;
 
 module.exports = function handleTickValueDefaults(containerIn, containerOut, coerce, axType) {
     function readInput(attr) {
@@ -22,7 +23,7 @@ module.exports = function handleTickValueDefaults(containerIn, containerOut, coe
     var _dtick = readInput('dtick');
     var _tickvals = readInput('tickvals');
 
-    var tickmodeDefault = Array.isArray(_tickvals) ? 'array' :
+    var tickmodeDefault = isArrayOrTypedArray(_tickvals) ? 'array' :
         _dtick ? 'linear' :
         'auto';
     var tickmode = coerce('tickmode', tickmodeDefault);

test/jasmine/tests/axes_test.js

@@ -1905,6 +1905,15 @@ describe('Test axes', function() {
                 expect(axOut.tickmode).toBe('array');
                 expect(axIn.tickmode).toBeUndefined();
 
+                var arr = new Float32Array(2);
+                arr[0] = 0;
+                arr[1] = 1;
+                axIn = {tickvals: arr};
+                axOut = {};
+                mockSupplyDefaults(axIn, axOut, 'linear');
+                expect(axOut.tickmode).toBe('array');
+                expect(axIn.tickmode).toBeUndefined();
+
                 axIn = {dtick: 1};
                 axOut = {};
                 mockSupplyDefaults(axIn, axOut, 'linear');