earliest and latest value from a chart

[nSphere]

Hello community,

I am searching since few days a solution to display the earliest and latest value from a chart into a dashboard.

here is my query;

<search>
<query>index=main Name=volume_* | chart sum("Used Capacity TB") AS "Used Capacity TB", sum("Total Capacity TB") AS "Total Capacity TB" by _time span=7d</query>
<earliest>$time_token.earliest$</earliest>
<latest>$time_token.latest$</latest>
</search>

I would like to extract the earliest and latest value and then substract the latest-earliest divided by the number of days.

exemple,

values of 

earliest is 50

latest is 52

the calculation will be 

52-50 = 2

2/7d = 0.286

Thank you!

[ITWhisperer]

Use addinfo - for example

| makeresults 
| addinfo
| fieldformat info_min_time=strftime(info_min_time,"%Y-%m-%d %H:%M:%S") 
| fieldformat info_max_time=strftime(info_max_time,"%Y-%m-%d %H:%M:%S")