# Output set by field
**URL:** https://discuss.elastic.co/t/output-set-by-field/338748
**Category:** Logstash
**Created:** [July 19, 2023, 7:09am UTC](https://discuss.elastic.co/t/output-set-by-field/338748 "2023-07-19T07:09:11Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@tbs575](https://discuss.elastic.co/u/tbs575)
#### Post date: [July 19, 2023, 7:09am UTC](https://discuss.elastic.co/t/output-set-by-field/338748/1 "2023-07-19T07:09:11Z")
Hi Guys,
set logstash output influxdb, as title can out by field. output part like
```auto
output {
influxdb_v2 {
host => "10.200.101.18"
port => "8086"
org => "icep"
token => "SIRq-QX3d7ddOI33Z9XfmZETHHGAFjH_033Dgfly6iiKIkQqMqS4lfEqdnbNpB5uydV_O2z4F-s5Mo8szJWfeA=="
measurement => "%{measurement}"
send_as_tags => ["[host][name]"]
bucket => "test"
exclude_fields => ["original"]
use_event_fields_for_data_points => false
data_points => {
"car_number" => "%{car_number}" "location" => "%{location}" "status" => "%{status}"
}
}
}
output {
stdout { }
}
```
As different log, need change `measurement` and `data_points`. In filter part, I add field `add_field => { "measurement" => "parking-car-location" }` to solve `measurement`, but `data_points` can not know how to solve, is there any idea? thanks
---
### Author:  [@Rios](https://discuss.elastic.co/u/Rios)
#### Post date: [July 19, 2023, 7:49am UTC](https://discuss.elastic.co/t/output-set-by-field/338748/2 "2023-07-19T07:49:34Z")
Try with commas
```auto
data_points => { "car_number" => "%{car_number}", "location" => "%{location}", "status" => "%{status}" }
```
---
### Author:  [@tbs575](https://discuss.elastic.co/u/tbs575)
#### Post date: [July 19, 2023, 9:19am UTC](https://discuss.elastic.co/t/output-set-by-field/338748/3 "2023-07-19T09:19:42Z")
Hi Rios
thanks, but that is not for my question.
my `data_points` format is right, can output metric. just different output content by logs. maybe this time is `data_points => { "A" => "%{A}" "B" => "%{B}" "C" => "%{C}" }` and next time is `data_points => { "D" => "%{D}" "E" => "%{E}"}`
---
### Author:  [@Rios](https://discuss.elastic.co/u/Rios)
#### Post date: [July 19, 2023, 9:39am UTC](https://discuss.elastic.co/t/output-set-by-field/338748/4 "2023-07-19T09:39:56Z")
In that case, you should use mutate and format dynamic array [@metadata][data\_point] or use Ruby code. At the end will be:
`data_points => { %{[@metadata][data_point] }`
---
### Author:  [@tbs575](https://discuss.elastic.co/u/tbs575)
#### Post date: [July 20, 2023, 1:29am UTC](https://discuss.elastic.co/t/output-set-by-field/338748/5 "2023-07-20T01:29:02Z")
Hi Rios
can you show a example of dynamic array [@metadata][data\_point]? thanks
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 17, 2023, 1:29am UTC](https://discuss.elastic.co/t/output-set-by-field/338748/6 "2023-08-17T01:29:08Z")
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