DCI with calculated trend/change

[MarcusH]

Hi,

We have a few DCI that collect values and even though graphs give a fairly good representation would i like to have one DCI with changes.
Example, DCI A collects value once every day and was 100 yesterday and 150 today, DCI B will then save/show the change in value from the day before and show +50

Is this possible in some clever way using scripts?
Like can you get earlier data from other DCI, or do you haft to have one DCI with todays value, another with yesterdays and a third with the change value of the two?

Just started looking into scripting since i have mainly used only agent or SNMP DCI before.

[tomaskir]

You dont even need to use scripts for this, simply use Delta calculation, which is already fully available in NetXMS.

[MarcusH]

Thanks did not think of that, still would be nice to know if you can get earlier DCI data in script.
We have a wall of screens showing dashboards and what we want to be shown there changes and starting to get more advanced.

[tomaskir]

You can do that also already:
https://wiki.netxms.org/wiki/NXSL:GetDCIValues

[JLS032]

Hi, I have a similar question. I would like to automatically generate a bandwith graph showing the trend based on hourly peaks in usage and excluding weekends or out of office hours. Is anyone able to help me with is, or is it just not possible using NetXMS?

Thanks!