# Charts **URL:** \ **Category:** Ignition\ **Created:** [February 12, 2012, 4:21am UTC](https://forum.inductiveautomation.com/t/charts/3984 "2012-02-12T04:21:51Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Joseph\_Mendonca](https://avatars.discourse-cdn.com/v4/letter/j/58f4c7/32.png) [@Joseph\_Mendonca](https://forum.inductiveautomation.com/u/Joseph_Mendonca)\ **Post date:** [February 12, 2012, 4:21am UTC](https://forum.inductiveautomation.com/t/charts/3984/1 "2012-02-12T04:21:51Z")
add another x-trace to charts ---
**Author:** ![diat150](https://avatars.discourse-cdn.com/v4/letter/d/a587f6/32.png) [@diat150](https://forum.inductiveautomation.com/u/diat150)\ **Post date:** [February 13, 2012, 12:11am UTC](https://forum.inductiveautomation.com/t/charts/3984/2 "2012-02-13T00:11:56Z")
how about a x-trace function that sums/avg’s the pens on the chart? either that or the ability to add a pen on the chart that sums or avgs the current pens on the chart. ---
**Author:** ![gnguyen](https://avatars.discourse-cdn.com/v4/letter/g/41988e/32.png) [@gnguyen](https://forum.inductiveautomation.com/u/gnguyen)\ **Post date:** [February 13, 2012, 10:23am UTC](https://forum.inductiveautomation.com/t/charts/3984/3 "2012-02-13T10:23:22Z")
+1 for another xtrace plus : - same xtrace for subplot 😃 - calculated values : delta, slope, area… 😃😃 ---
**Author:** ![Duffanator](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/duffanator/32/3560_2.png) [@Duffanator](https://forum.inductiveautomation.com/u/Duffanator)\ **Post date:** [February 13, 2012, 1:29pm UTC](https://forum.inductiveautomation.com/t/charts/3984/4 "2012-02-13T13:29:59Z")
+1 as well for calculated values. That would solve some issues for me… ![:thumb_left:](https://us1.discourse-cdn.com/inductiveautomation/original/1X/e26afb081ddde6df016df6ee49159cf56aaca688.gif ":thumb\_left:")