# Arrays in arrays
**URL:** https://discuss.elastic.co/t/arrays-in-arrays/86816
**Category:** Logstash
**Created:** [May 23, 2017, 1:23pm UTC](https://discuss.elastic.co/t/arrays-in-arrays/86816 "2017-05-23T13:23:26Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Toony](https://discuss.elastic.co/u/Toony)
#### Post date: [May 23, 2017, 1:23pm UTC](https://discuss.elastic.co/t/arrays-in-arrays/86816/1 "2017-05-23T13:23:26Z")
Hi everyone,
I am trying to index geoshapes from kafka messages ...
I just can not use the merge to put arrays in an array.
For instance, i want to index an envelope geoshape like this in target elasticsearch json:
> [...]
> "location" : {
> "type":"envelope",
> "coordinates": [[x1,y1], [x2,y2] ]
> },
> [...]
I tryed this:
> ```
> mutate {
> convert => {
> "x1" => float
> "x2" => float
> "y1" => float
> "y2" => float
> }
> merge => { "x1" => "y1"}
> merge => { "x2" => "y2" }
> merge => { "coordinates" => "x1" }
> merge => { "coordinates" => "x2" }
>
> ```
But as a result I found:
"coordinates": [x2,y2]
and not
"coordinates":[[x1,y1],[x2,y2]
Any idea on how to achieve this ?
I thought about the ruby code filter but I definitely do not master the syntax ☹
Thanks for your help !
---
### Author:  [@Toony](https://discuss.elastic.co/u/Toony)
#### Post date: [May 24, 2017, 8:46am UTC](https://discuss.elastic.co/t/arrays-in-arrays/86816/2 "2017-05-24T08:46:53Z")
I have finally found a solution to add my geohash.
> mutate {
> convert =\> {
> "x1" =\> float
> "x2" =\> float
> "y1" =\> float
> "y2" =\> float
> }
> merge =\> { "x1" =\> "y1"}
> merge =\> { "x2" =\> "y2" }
> }
> ruby {
> code =\> 'event.set("[location][type]","envelope");event.set("[location][coordinates]",[event.get("x1"),event.get("x2")])'
> remove\_field =\> ["x1", "x2", "y1", "y2"]
> }
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [June 21, 2017, 8:47am UTC](https://discuss.elastic.co/t/arrays-in-arrays/86816/3 "2017-06-21T08:47:03Z")
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