# Easy Chart Help **URL:** \ **Category:** Ignition\ **Created:** [April 25, 2019, 7:18pm UTC](https://forum.inductiveautomation.com/t/easy-chart-help/24407 "2019-04-25T19:18:21Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![bchristenson](https://avatars.discourse-cdn.com/v4/letter/b/ecccb3/32.png) [@bchristenson](https://forum.inductiveautomation.com/u/bchristenson)\ **Post date:** [April 25, 2019, 7:18pm UTC](https://forum.inductiveautomation.com/t/easy-chart-help/24407/1 "2019-04-25T19:18:21Z")
Looking for help with my easy chart. I have data going into the chart and everything is working how I like but there are somethings in the wonderware project I am converting that I cant seem to find in the Ignition Designer. Inside of the wonderware project with their chart comes a scroll bar that when you move it along the trend will display the tags value. Is this something that can be done in ignition and if so how? Thanks. ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [April 25, 2019, 7:28pm UTC](https://forum.inductiveautomation.com/t/easy-chart-help/24407/2 "2019-04-25T19:28:32Z")
I’m not quite sure, but that sounds like maybe what we call ‘x-trace’? Right click the chart in the runtime/preview mode and change the mode to X-trace - is that what you’re looking for? ---
**Author:** ![bchristenson](https://avatars.discourse-cdn.com/v4/letter/b/ecccb3/32.png) [@bchristenson](https://forum.inductiveautomation.com/u/bchristenson)\ **Post date:** [April 25, 2019, 7:33pm UTC](https://forum.inductiveautomation.com/t/easy-chart-help/24407/3 "2019-04-25T19:33:09Z")
Mark is what I was playing with, I think this will work for what I am trying to do. What is the difference between what X-Trace and Mark do? ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [April 25, 2019, 7:36pm UTC](https://forum.inductiveautomation.com/t/easy-chart-help/24407/4 "2019-04-25T19:36:19Z")
Basically Mark highlights a _single_ datapoint (ie, only one pen) where x-trace will show all values at one _timestamp_. You can also turn on the ‘X-Trace Track Mouse’ property in component settings so users don’t have to hold down the mouse button. ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [April 25, 2019, 7:43pm UTC](https://forum.inductiveautomation.com/t/easy-chart-help/24407/5 "2019-04-25T19:43:37Z")
If you need scripted control over the X-Trace, take a look at my [NoteChart](https://inductiveautomation.com/moduleshowcase/module/automation-professionals-llc-notechart) module. It’s X-Trace is a total rewrite, exposing the timestamp as writeable `Date` property instead of a read-only string, and it offers capture of the pen values corresponding to the trace. ---
**Author:** ![bchristenson](https://avatars.discourse-cdn.com/v4/letter/b/ecccb3/32.png) [@bchristenson](https://forum.inductiveautomation.com/u/bchristenson)\ **Post date:** [April 25, 2019, 7:43pm UTC](https://forum.inductiveautomation.com/t/easy-chart-help/24407/6 "2019-04-25T19:43:51Z")
Ok good to know that brings me to my next question at runtime can I some how add a pen and select a tag to chart with the exiting pen on the chart? ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [April 25, 2019, 7:46pm UTC](https://forum.inductiveautomation.com/t/easy-chart-help/24407/7 "2019-04-25T19:46:38Z")
You have to script the creation/editing of the datasets for the `pens`, `tagPens`, and/or `calcPens` properties. Per [the manual](https://docs.inductiveautomation.com/display/DOC79/Easy+Chart). See also the `onTagsDropped` extension function.