# Matrix stats on string fields **URL:** \ **Category:** Elasticsearch\ **Created:** [June 15, 2016, 2:25pm UTC](https://discuss.elastic.co/t/matrix-stats-on-string-fields/52877 "2016-06-15T14:25:55Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Dominik\_Stadler](https://avatars.discourse-cdn.com/v4/letter/d/8e8cbc/32.png) [@Dominik\_Stadler](https://discuss.elastic.co/u/Dominik_Stadler)\ **Post date:** [June 15, 2016, 2:25pm UTC](https://discuss.elastic.co/t/matrix-stats-on-string-fields/52877/1 "2016-06-15T14:25:55Z")
Hi, I read up and played a bit with the new Matrix Stats aggregation that was committed to master recently. It is a nice addition for a number of use-cases and works quite well for numeric values. What I am wondering now is if there is a way to apply the same concept on string fields. As an example if you have log-entries that contain the type of browser and the operating system where they originated, there will usually be a high correlation of mobile browsers to mobile operating systems. Is there a way I can run queries that will allow me to find such statistical correlations? I can probably use some machine learning tools like Mahout, but it would be nice being able to use only Elasticsearch for this. Thanks... Dominik. ---
**Author:** ![nknize](https://avatars.discourse-cdn.com/v4/letter/n/edb3f5/32.png) [@nknize](https://discuss.elastic.co/u/nknize)\ **Post date:** [June 27, 2016, 1:45pm UTC](https://discuss.elastic.co/t/matrix-stats-on-string-fields/52877/2 "2016-06-27T13:45:01Z")
Unfortunately Matrix stats is limited to numeric fields at the moment. Adding support for String fields is something we're still considering. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 5, 2017, 10:40pm UTC](https://discuss.elastic.co/t/matrix-stats-on-string-fields/52877/3 "2017-07-05T22:40:13Z")