Plotting an open closed item

Setup, Configuration and Use Items & Sitemaps
1

I have a door sensor that provided open/closed state. I plot it in my basic UI and it shows up w/o problem. My item is basementdoorSensor2 and it is persisted in rrdb4j with strategy = everyChange, everyMinute, restoreOnStartup

		Frame label="Door"{
			Text item=basementdoorSensor2{	
				Text item=basementdoorSensor2
				Text item=basementdoorSensorLHF2
				Switch item=Door_Chart_Period mappings=[0="Hour", 1="4 Hrs", 2="12 Hrs", 3="Day", 4="Week", 5="Month"]  //Value can be h,4h,8h,12h,D,3D,W,2W,M,2M,4M,Y
				Chart item=basementdoorSensor2 legend=true period=h refresh=6000 visibility=[Door_Chart_Period==0]
				Chart item=basementdoorSensor2 legend=true period=4h refresh=30000 visibility=[Door_Chart_Period==1]
				Chart item=basementdoorSensor2 legend=true period=12h refresh=30000 visibility=[Door_Chart_Period==2]
				Chart item=basementdoorSensor2 legend=true period=D refresh=30000 visibility=[Door_Chart_Period==3]
				Chart item=basementdoorSensor2 legend=true period=W refresh=30000 visibility=[Door_Chart_Period==4, Door_Chart_Period=="NULL"]
				Chart item=basementdoorSensor2 legend=true period=M refresh=30000 visibility=[Door_Chart_Period==5]
			}
		}

However when I try to plot it in MainUI, it just gives an empty plot.

I suspect it has to do with the data type, but not sure ow to debug. Can anyone help?

2

What kind of chart and what sort of series are you using? I think you have to choose “State Series” when plaotting contacts and switches.