log info when skipping splom dim of conflicting axis types

Author: etpinard

src/traces/splom/index.js

@@ -62,7 +62,10 @@ function calc(gd, trace) {
             ya = AxisIDs.getFromId(gd, trace._diag[i][1]);
 
             // if corresponding x & y axes don't have matching types, skip dim
-            if(xa && ya && xa.type !== ya.type) continue;
+            if(xa && ya && xa.type !== ya.type) {
+                Lib.log('Skipping splom dimension ' + i + ' with conflicting axis types');
+                continue;
+            }
 
             if(xa) {
                 makeCalcdata(xa, dim);

test/jasmine/tests/splom_test.js

@@ -409,6 +409,8 @@ describe('Test splom trace calc step:', function() {
     }
 
     it('should skip dimensions with conflicting axis types', function() {
+        spyOn(Lib, 'log').and.callThrough();
+
         _calc({
             dimensions: [{
                 values: [1, 2, 3]
@@ -424,6 +426,8 @@ describe('Test splom trace calc step:', function() {
 
         expect(cd.t._scene.matrixOptions.data).toBeCloseTo2DArray([[2, 1, 2]]);
         expect(cd.t.visibleDims).toEqual([1]);
+        expect(Lib.log).toHaveBeenCalledTimes(1);
+        expect(Lib.log).toHaveBeenCalledWith('Skipping splom dimension 0 with conflicting axis types');
     });
 });