Hi,
I want to make a graph from my data, the Temperatures etc, come in at random times and updates it's own column and Nulls are put in every other column.
The Nulls would mess up the graph, is there a way to change Nulls to previous non null reading or as the chart is shown on Dashboard ?.
An example of what I am looking to do.
IP_24_Temperature IP_24_Humidity
16.5 Null
Null Null
Null Null
16.8 58
Null Null
Null Null
Null Null
Null 60
Null Null
16.5 61
What I require is ...
IP_24_Temperature IP_24_Humidity
16.5 0
16.5 0
16.5 0
16.8 58
16.8 58
16.8 58
16.8 58
16.8 60
16.8 60
16.5 61
...... etc
Thanks