# Easy Chart Tag Pens aggregation mode **URL:** \ **Category:** Ignition\ **Created:** [August 15, 2012, 1:51pm UTC](https://forum.inductiveautomation.com/t/easy-chart-tag-pens-aggregation-mode/5007 "2012-08-15T13:51:20Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![quper](https://avatars.discourse-cdn.com/v4/letter/q/aeb1de/32.png) [@quper](https://forum.inductiveautomation.com/u/quper)\ **Post date:** [August 15, 2012, 1:51pm UTC](https://forum.inductiveautomation.com/t/easy-chart-tag-pens-aggregation-mode/5007/1 "2012-08-15T13:51:20Z")
Hi! Is it possible to change aggregation mode on easychart? I have Tag Pens binding with postgres database table, but I don’t want to change aggregation mode through database, because it would reflect all clients. I would like to change it client locally. I was trying to set value to Tag Pens dataset itself on easychart, but those are immutable and I have polling mode set to off. I means if I change Tag Pens dataset somehow, it would read binded table from database and drop this change. ---
**Author:** ![Travis.Cox](https://avatars.discourse-cdn.com/v4/letter/t/b9bd4f/32.png) [@Travis.Cox](https://forum.inductiveautomation.com/u/Travis.Cox)\ **Post date:** [August 15, 2012, 3:10pm UTC](https://forum.inductiveautomation.com/t/easy-chart-tag-pens-aggregation-mode/5007/2 "2012-08-15T15:10:19Z")
Yes, that is possible. You are on the right track with the tag pens dataset. You can bind the dataset to a cell update binding which allows you to dynamically change certain cells. You can change the aggregation mode for all pens by binding them to a value from the database or a memory tag. ---
**Author:** ![quper](https://avatars.discourse-cdn.com/v4/letter/q/aeb1de/32.png) [@quper](https://forum.inductiveautomation.com/u/quper)\ **Post date:** [August 21, 2012, 8:56am UTC](https://forum.inductiveautomation.com/t/easy-chart-tag-pens-aggregation-mode/5007/3 "2012-08-21T08:56:58Z")
How can I set aggregation mode via cell update for every row? They vary from 3 to 9. Is it possible to put this for every row no matter how many of them appear in dataset? ---
**Author:** ![Travis.Cox](https://avatars.discourse-cdn.com/v4/letter/t/b9bd4f/32.png) [@Travis.Cox](https://forum.inductiveautomation.com/u/Travis.Cox)\ **Post date:** [August 21, 2012, 2:55pm UTC](https://forum.inductiveautomation.com/t/easy-chart-tag-pens-aggregation-mode/5007/4 "2012-08-21T14:55:25Z")
Yes, we will ignore any rows that do not exist. ---
**Author:** ![quper](https://avatars.discourse-cdn.com/v4/letter/q/aeb1de/32.png) [@quper](https://forum.inductiveautomation.com/u/quper)\ **Post date:** [August 28, 2012, 6:30am UTC](https://forum.inductiveautomation.com/t/easy-chart-tag-pens-aggregation-mode/5007/5 "2012-08-28T06:30:30Z")
Thank you.