nt = [event.offsetX, event.offsetY];
                        const data = chart.convertFromPixel({matrixIndex: 0}, point, _ctx.convertFromPixelOpt);
                        const layout = chart.convertToLayout({matrixIndex: 0}, data);

                        _ctx.testResult = {
                            result: 'convertFromPixel result: ' + testHelper.printObject(data) + '\n'
                                + 'Then use it convertToLayout result: ' + testHelper.printObject(layout),
                       