_40.strokeStyle=this.options.axisLineColor;
_40.lineWidth=this.options.axisLineWidth;
if(this.options.drawYAxis){
-if(this.layout.yticks){
+if(this.layout.yticks&&this.layout.yticks.length>0){
for(var i=0;i<this.layout.yticks.length;i++){
var _46=this.layout.yticks[i];
if(typeof (_46)=="function"){