# Easy chart smooth and edgy plot **URL:** \ **Category:** Ignition\ **Tags:** ignition81, vision\ **Created:** [July 26, 2022, 6:49am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291 "2022-07-26T06:49:20Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![Benjamin\_Nielsen](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@Benjamin\_Nielsen](https://forum.inductiveautomation.com/u/Benjamin_Nielsen)\ **Post date:** [July 26, 2022, 6:49am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/1 "2022-07-26T06:49:20Z")
Hello, I have a project where I use easy chart and plot my historian tags. The easy chart are performing in a way that I do not understand. One line is smooth and the other is edgy, even though the two tags are set up exactly equal in all parameters. When I remove the smooth line from the plot, the edgy line becomes smooth, but when I add the previous smooth line, the previous edgy line, becomes edgy again. Can someone explain why this is happening, and what I can do to only have smooth lines? Regards Benjamin The behavior can be seen on the pictures. ![Trend error](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/8/981ff4798f8cbeadd263ee36515d62232d3c22da.png) ![Trend error 2](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/f/ef992ac12871c834dc76ed13ac4371f979b14b8c.png) ---
**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:** [July 26, 2022, 11:58am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/2 "2022-07-26T11:58:01Z")
Autoscale is zooming in on one pen or the other when it is alone. Use manual scaling. ---
**Author:** ![Benjamin\_Nielsen](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@Benjamin\_Nielsen](https://forum.inductiveautomation.com/u/Benjamin_Nielsen)\ **Post date:** [July 27, 2022, 9:38am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/3 "2022-07-27T09:38:18Z")
Okay thanks, Is it possible to adjust the Y axis manually “on the fly”? Meaning that the operator can freely choose the scale of the y-axis? ---
**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:** [July 27, 2022, 11:29am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/4 "2022-07-27T11:29:35Z")
You’d have to do something in the `configureChart` customization script to directly adjust the JFreeChart objects. Not trivial, unfortunately, and I don’t have an example handy. /: ---
**Author:** ![Benjamin\_Nielsen](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@Benjamin\_Nielsen](https://forum.inductiveautomation.com/u/Benjamin_Nielsen)\ **Post date:** [July 27, 2022, 11:59am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/5 "2022-07-27T11:59:10Z")
Thanks for feedback. I ended up using cell update on the chart, and bind it to a numerical input. ---
**Author:** ![Benjamin\_Nielsen](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@Benjamin\_Nielsen](https://forum.inductiveautomation.com/u/Benjamin_Nielsen)\ **Post date:** [July 27, 2022, 1:25pm UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/6 "2022-07-27T13:25:38Z")
I have now tested the manual scaling, and I still receive the same error. See below picture. The second pen is edgy while the first is smooth. Can it be something else? ![Trend error 3](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/a/8a91c87254499d8ae2519eefa3cbbe0af1bb6bfd.png) ---
**Author:** ![lrose](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lrose/32/62724_2.png) [@lrose](https://forum.inductiveautomation.com/u/lrose)\ **Post date:** [July 27, 2022, 3:06pm UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/7 "2022-07-27T15:06:44Z")
Can you show your pen configuration for the second pen? It looks like it is configured as a Digital Pen. ---
**Author:** ![Benjamin\_Nielsen](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@Benjamin\_Nielsen](https://forum.inductiveautomation.com/u/Benjamin_Nielsen)\ **Post date:** [July 27, 2022, 3:49pm UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/8 "2022-07-27T15:49:39Z")
I am not using any pen configuration. I am using a tag tree that I drag and drop onto the easy chart. My tags are then historian enabled, and used in easy chart. ---
**Author:** ![Benjamin\_Nielsen](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@Benjamin\_Nielsen](https://forum.inductiveautomation.com/u/Benjamin_Nielsen)\ **Post date:** [August 2, 2022, 7:05am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/9 "2022-08-02T07:05:33Z")
Anyone know if the easy chart sets the pen configuration by itself somehow? ---
**Author:** ![Benjamin\_Nielsen](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@Benjamin\_Nielsen](https://forum.inductiveautomation.com/u/Benjamin_Nielsen)\ **Post date:** [August 12, 2022, 9:16am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/10 "2022-08-12T09:16:20Z")
Hello, Here is the picture of the pen configuration. Both lines are set to “Line w/Gaps” ![Pen configuration](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/8/78bdca6a9aa733f8a13c8ee534c117a533878a2f.png) ---
**Author:** ![lrose](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lrose/32/62724_2.png) [@lrose](https://forum.inductiveautomation.com/u/lrose)\ **Post date:** [August 12, 2022, 11:42am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/11 "2022-08-12T11:42:58Z")
Assuming that both tags are set up identically, I see no reason they shouldn’t be charted the same. Might be time to have support take a look. ---
**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:** [August 12, 2022, 3:44pm UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/12 "2022-08-12T15:44:19Z")
What’s the deadband style on the two tags? ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/0/40d7e65f74f69b6d2870885e83f1b110c5a591f0.png) ---
**Author:** ![Benjamin\_Nielsen](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@Benjamin\_Nielsen](https://forum.inductiveautomation.com/u/Benjamin_Nielsen)\ **Post date:** [August 15, 2022, 6:18am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/13 "2022-08-15T06:18:50Z")
The Tag history setup is as following on both tags: And of course with a Storage Provider. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/7/b78e0ef6bfeee486c9689cdd6f0be256457613a5.png) ---
**Author:** ![Benjamin\_Nielsen](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@Benjamin\_Nielsen](https://forum.inductiveautomation.com/u/Benjamin_Nielsen)\ **Post date:** [August 22, 2022, 9:27am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/14 "2022-08-22T09:27:24Z")
Any update on this? ---
**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:** [August 22, 2022, 3:10pm UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/15 "2022-08-22T15:10:31Z")
The deadband was my last guess. I would echo @lrose’ suggestion to contact [Support](https://support.inductiveautomation.com). ---
**Author:** ![Benjamin\_Nielsen](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@Benjamin\_Nielsen](https://forum.inductiveautomation.com/u/Benjamin_Nielsen)\ **Post date:** [August 23, 2022, 6:12am UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/16 "2022-08-23T06:12:37Z")
Okay thanks. I have reached out to support 🙂 ---
**Author:** ![Xander\_Dawson-Fink](https://avatars.discourse-cdn.com/v4/letter/x/73ab20/32.png) [@Xander\_Dawson-Fink](https://forum.inductiveautomation.com/u/Xander_Dawson-Fink)\ **Post date:** [December 2, 2024, 2:18pm UTC](https://forum.inductiveautomation.com/t/easy-chart-smooth-and-edgy-plot/62291/17 "2024-12-02T14:18:41Z")
Did you end up getting this fixed with support? I'm having a similar issue right now. For me it almost seemed like you only got so many types of aggregations before the engine just kinda gives up, but your problem only had 2 pens, both with the same aggregation. The only similarity between our situations is the way the tag history is set up (minus storage provider ofc)