I thought it was possible to create a dashboard with a DCI template / context and have the dashboard itself populated with nodes that you filter for. 
Creating a dashboard that is applied to nodes of a specific type when you click on them is fantastic, but I am trying to wrap my head around how to have all of those nodes appear on a single dashboard without me having to manually add them? Or did I miss something in the docs?
For example, I want all the netonix switch temperature readings on a single dashboard, then filtered by highest temp first.
			
			
			
				If I correctly understand your use case, Object Query can help: https://www.netxms.org/documentation/adminguide/visualisation.html#object-query
A bit later I can prepare some example that would pull DCI value from nodes. 
			
			
			
				I am looking for a way to add a hundred nodes to a dashboard with DCI values and have three of them displayed with bar graphs and one dci displayed with a line graph (three temp's and one fan RPM).
I would prefer not to do it manually. 
Thanks.
			
			
			
				Actually it's more like 188 devices...
			
			
			
				To have a table with values on a dashboard we have the following options:
- Object query
- DCI summary table
- We can use script to build a Table DCI and display that on the dashboard
But I still do not understand how bar graphs and line graphs should work - do you want them to show data from 3 "worst" nodes?