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ScottAllison's avatar
ScottAllison
Iron Contributor
Feb 24, 2020
Solved

Ignore bucket based on offset

I'm trying to visualize the number of Heartbeats in 1 hour buckets for the last 48 hours. However, no matter what I use for an offset, I get a drop in amount at the beginning and end of the dataset: ...
azure monitor
Query Language
  • CliveWatson's avatar
    CliveWatson
    Feb 25, 2020

    ScottAllison

     

    I suspect you have values below 300,000 due to the time you run the query, if it runs in the morning lets say 9am, you get a small count from midnight to 8am that day (where as the previous whole day will always have more results)- hence the lower number.

     

    Heartbeat
| where TimeGenerated between (startofday(ago(2d))..startofday(ago(0d)))
| summarize Rows=count() by bin(TimeGenerated, 1h)
| render timechart

    This would be a example to get two whole days (midnight to midnight), to get rid of those two varying data points.  I'm a fan of "startofday" for this reason. https://docs.microsoft.com/en-us/azure/kusto/query/startofdayfunction

     

     

     

CliveWatson's avatar
CliveWatson
Former Employee
Feb 25, 2020

ScottAllison

 

I suspect you have values below 300,000 due to the time you run the query, if it runs in the morning lets say 9am, you get a small count from midnight to 8am that day (where as the previous whole day will always have more results)- hence the lower number.

 

Heartbeat
| where TimeGenerated between (startofday(ago(2d))..startofday(ago(0d)))
| summarize Rows=count() by bin(TimeGenerated, 1h)
| render timechart

This would be a example to get two whole days (midnight to midnight), to get rid of those two varying data points.  I'm a fan of "startofday" for this reason. https://docs.microsoft.com/en-us/azure/kusto/query/startofdayfunction

 

 

 

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