Hi @fgalan,

Could you please confirm if anybody is working on this issue?

2. To be able to include several aggregations at the same time using a comma separated list, e.g. aggrMethod=min,max. The all token could be used as alias for "all metrics".

As per my understanding, below API should work fine for the above improvement. Please confirm my understanding.
curl -v 'http://localhost:8666/STH/v2/entities/Room1/attrs/temperature?type=Room&aggrMethod=min,max&aggrPeriod=second&dateFrom=2016-01-01T00:00:00.000Z&dateTo=2023-01-01T23:59:59.999Z' -s -S -H 'Content-Type: application/json' -H 'Fiware-Service: qsg' -H 'Fiware-ServicePath: /testsink'

Hi @fgalan ,

Could you please confirm the queries?

As far as I know, nobody is working on this issue so far.

Your query is correct. Note that ?aggrMethod=min,max is just an example. All combination of existing aggrMethod should be supported, in addition to the keyword all, meaning all them.

Thanks!

Hi @fgalan ,

1. To include costless additional aggregations. For example, average is sum by occur. It would be very easy for STH to generate avg at rendering time.

As per my understanding, sum is calculated for attribute type float and occur is calculated for attribute type string.
So, we need to calculate the avg by different method. Also, it could only be implemented for attribute type float.
Could you please share your opinion?
Could you please share your ideas on more examples of additional aggregations?

As per my understanding, sum is calculated for attribute type float and occur is calculated for attribute type string.
So, we need to calculate the avg by different method. Also, it could only be implemented for attribute type float.
Could you please share your opinion?

Yes, maybe occur is not the one to use. You have to divide sum by the number of summed elements.

Could you please share your ideas on more examples of additional aggregations?

Part of the work on this issue is to come up with more examples of additional aggregations :) Do you have any idea regarding this?