I want to create a metric in kibana dashboard, which use ratio of multiple metrics and offset period.
Example :
Date Budget
YYYY-MM-DD $
2019-01-01 15
2019-01-02 10
2019-01-03 5
2019-01-04 10
2019-01-05 12
2019-01-06 4
If I select time range between 2019-01-04 to 2019-01-06 , I want to compute ratio with offset period: 2019-01-01 to 2019-01-03.
to resume : (sum(10+12+4) - sum(15+10+5)) / sum(10+12+4) = -0.15 evolution of my budget equal to -15% (and this is what I want to print in the dashboard)
But, with metric it's not possible (no offset), with visual builder: different metric aggregation do not have different offset (too bad because bucket script allow to compute ratio), and with vega : I not found a solution too.
Any idea ? Thanks a lot
Aurélien
NB: I use kibana version > 6.X
Please check the below sample mapping which I've constructed based on data you've provided in the query and aggregation solution that you wanted to take a look.
PUT <your_index_name>
{
"mappings": {
"mydocs": {
"properties": {
"date": {
"type": "date",
"format": "yyyy-MM-dd"
},
"budget": {
"type": "float"
}
}
}
}
}
I've made use of the following types of aggregation:
4d
based on the data you've mentioned in the questionAlso I'm assuming that the date format would be in yyyy-MM-dd
and budget
would be of float
data type.
Below is how your aggregation query would be.
POST <your_index_name>/_search
{
"size": 0,
"query": {
"range": {
"date": {
"gte": "2019-01-01",
"lte": "2019-01-06"
}
}
},
"aggs": {
"my_date": {
"date_histogram": {
"field": "date",
"interval": "4d",
"format": "yyyy-MM-dd"
},
"aggs": {
"sum_budget": {
"sum": {
"field": "budget"
}
},
"budget_derivative": {
"derivative": {
"buckets_path": "sum_budget"
}
},
"budget_evolution": {
"bucket_script": {
"buckets_path": {
"input_1": "sum_budget",
"input_2": "budget_derivative"
},
"script": "(params.input_2/params.input_1)*(100)"
}
}
}
}
}
}
Note that the result that you are looking for would be in the budget_evolution
part.
Hope this helps!