topic Re: Could you help me build a bar chart? in Dashboards & Visualizations

Could you help me build a bar chart?

stevesmith08 — Sun, 06 Jan 2019 14:13:29 GMT

Hey,

Could you please help me?

Suppose I have events like this:

Each event contains a student's assessment in five disciplines.

The assessment is considered unsatisfactory if the student scored less than 50 points.

You want to write a query that allows you to build a diagram of the following form:

Thanks so much!

Re: Could you help me build a bar chart?

richgalloway — Sun, 06 Jan 2019 14:33:24 GMT

This query should produce the desired results. After running it, choose "Stacked Column" from the Visualizations tab.

| stats count(eval(points>50)) as "COUNT(>50)", count(eval(points<=50)) as "COUNT(<=50)" by discipline

Re: Could you help me build a bar chart?

stevesmith08 — Sun, 06 Jan 2019 14:47:29 GMT

Sorry, but what information do the “points” and “discipline” fields store?

I may not have accurately put it, but the structure of each event is as follows:
Surname = Smith, Math = 100, Physics = 65, History = 35, IT = 58, PE = 45
Surname = Wilson, Math = 67, Physics = 60, History = 90, IT = 72, PE = 50
...

But your way is really good for a bar chart on each subject individually 🙂

Re: Could you help me build a bar chart?

renjith_nair — Sun, 06 Jan 2019 15:07:40 GMT

@stevesmith08,

Assuming you have your current search as

index="your index" | table Surname,Math,Physics, History, IT, PE

Lets untable it to get the Marks as a column and Subject as rows for calculation.

   index="your index" | table Surname,Math,Physics, History, IT, PE
   |untable Surname,Subject,Marks

And now do a conditional stats count : FINAL

   index="your index" | table Surname,Math,Physics, History, IT, PE
   |untable Surname,Subject,Marks
   |stats count(eval(Marks>50)) as "COUNT(>50)", count(eval(Marks<50)) as "COUNT(<50)" by Subject

Run anywhere example

index=_* earliest=-6m|timechart span=2m count as Marks by sourcetype|rename sourcetype as Subject,_time as Surname
|untable Surname,Subject,Marks
|stats count(eval(Marks>50)) as "COUNT(>50)", count(eval(Marks<50)) as "COUNT(<50)" by Subject

Re: Could you help me build a bar chart?

richgalloway — Sun, 06 Jan 2019 15:19:18 GMT

Points are scores and disciplines are subjects, using the terms in your OP. My answer is completely invalidated by your comment giving the event format. renjith.nair's answer appears to have nailed it.