sourcetypes size trend

[SplunkySplunk]

Hello

What is the best way to calculate sourcetypes size trend by time  index and level ?

i tried this two options but couldn't find a way to see the trend :

index=_internal source=*license_usage.log*  type=Usage idx=*| eval GB=b/1024/1024/1024 | stats sum(GB) by st idx

index=*   | eval raw_len=len(_raw)/1024/1024/1024 | stats sum(raw_len) as totalsize  count as NumberOfEvent by index sourcetype | sort -NumberOfEvent
| fields - NumberOfEvent

[renjith_nair]

Try including the _time as well in your search 

Either using timechart or by _time bucket 

index=_internal source=*license_usage.log*  type=Usage idx=*| eval GB=b/1024/1024/1024 |timchart span=1d sum(gb) by st

or

index=_internal source=*license_usage.log*  type=Usage idx=*| eval GB=b/1024/1024/1024 |bin _time span=1d 
| stats sum(GB) by _time,st

[sarit_s]

Hello

It looks good but once im clicking on one of the graphs its shows no results:

also, i want to visualize by Level as well