# Graphing NetFlow data in Kibana 3 **URL:** \ **Category:** Elasticsearch\ **Created:** [October 20, 2013, 8:43pm UTC](https://discuss.elastic.co/t/graphing-netflow-data-in-kibana-3/14033 "2013-10-20T20:43:46Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Ryan\_Melena](https://avatars.discourse-cdn.com/v4/letter/r/b19c9b/32.png) [@Ryan\_Melena](https://discuss.elastic.co/u/Ryan_Melena)\ **Post date:** [October 20, 2013, 8:43pm UTC](https://discuss.elastic.co/t/graphing-netflow-data-in-kibana-3/14033/1 "2013-10-20T20:43:46Z")
Hey all, I've got LogStash working nicely with the NetFlow codec[http://logstash.net/docs/1.2.1/codecs/netflow](http://logstash.net/docs/1.2.1/codecs/netflow)but I'm running into problems trying to graph the results in Kibana 3. When I create a Histogram Panel and try to graph the "netflow.in\_bytes" field I get the following error: ClassCastException[org.elasticsearch.index.fielddata.plain.PagedBytesIndexFieldData cannot be cast to org.elasticsearch.index.fielddata.IndexNumericFieldData] It seems that ElasticSearch isn't recognizing the PagedBytesIndexFieldData type as being numeric. Is this intended? If so, is there something I should be doing differently to be able to graph this data in Kibana 3? Thanks, Ryan -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 2:11am UTC](https://discuss.elastic.co/t/graphing-netflow-data-in-kibana-3/14033/2 "2017-07-06T02:11:31Z")