The following additional query options would be very welcome:
Query only the latest available data point of some measure
Grafana Alerting with OSI-Soft PI data sources
Grafana Dashboard Variables > type query > OSI-Soft PI datasource > query data and use for example the latest available data point as a dashboard variable. For example, query the latest latitude/longitude from some GPS device and use the coordinates in another query as a variable in an embedded Windy text panel for a weather forecast at the latest received position.
The following additional query options would be very welcome: