# Perspective Power Chart breakLine Property **URL:** \ **Category:** Ignition\ **Tags:** perspective\ **Created:** [February 15, 2021, 8:06pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430 "2021-02-15T20:06:13Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![rberghammer](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/rberghammer/32/7150_2.png) [@rberghammer](https://forum.inductiveautomation.com/u/rberghammer)\ **Post date:** [February 15, 2021, 8:06pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/1 "2021-02-15T20:06:13Z")
I am trying to create a chart that show gaps when the data is bad quality. This seems to work fine in Vision, but I can’t get it to work in Perspective. The breakLine property sounds like it should enable this functionality, but I don’t see a difference when turning this on or off. Here is an example of a Vision chart: ![Vision Chart](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/8/f840ebaccf45a9ca43e80765e1aabef4f930b685.png) Same data in a Perspective power chart: ![Perspective Chart](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/0/10bbe0d409a15c9c3f63ccfc3819b433e3c39f54.png) The Vision chart shows gaps when the data is bad. The Perspective chart trends a zero value. I am currently testing in version 8.1.2-rc1. ---
**Author:** ![rberghammer](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/rberghammer/32/7150_2.png) [@rberghammer](https://forum.inductiveautomation.com/u/rberghammer)\ **Post date:** [February 17, 2021, 5:22pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/2 "2021-02-17T17:22:45Z")
Anyone have any suggestions? ---
**Author:** ![kirsten.chambers](https://avatars.discourse-cdn.com/v4/letter/k/48db29/32.png) [@kirsten.chambers](https://forum.inductiveautomation.com/u/kirsten.chambers)\ **Post date:** [May 20, 2021, 7:30pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/3 "2021-05-20T19:30:11Z")
Bump. We need this functionality as well. It still doesn’t work as of 8.1.3 release, and there’s no notes about it in the nightlies thus far. Please, Inductive? 🥺 👉 👈 ---
**Author:** ![jball](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jball/32/11128_2.png) [@jball](https://forum.inductiveautomation.com/u/jball)\ **Post date:** [May 25, 2021, 4:37pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/4 "2021-05-25T16:37:09Z")
There is a `breakLine` property that is enabled by default per pen. It functions differently than Vision’s Easy Chart, though. It breaks on missing/absent values vs a `0` value like the Easy Chart: ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/a/eac1360e77769e9a5ab15bdde6dcca326bcfbb3b.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:** [May 25, 2021, 4:45pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/5 "2021-05-25T16:45:14Z")
> [@jball](#): > > vs a `0` value like the Easy Chart Are you sure the Easy Chart is reacting to zero? Instead of the recorded quality? (I always inject nulls into Vision datasets to deliberately break lines.) ---
**Author:** ![rberghammer](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/rberghammer/32/7150_2.png) [@rberghammer](https://forum.inductiveautomation.com/u/rberghammer)\ **Post date:** [May 25, 2021, 5:44pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/6 "2021-05-25T17:44:12Z")
@pturmel is correct. The screenshot in my original post is showing values with bad quality, not good quality zero values. Although it may be sending a zero value to the database? The breakLine property doesn’t seem to do anything. ---
**Author:** ![jball](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jball/32/11128_2.png) [@jball](https://forum.inductiveautomation.com/u/jball)\ **Post date:** [May 25, 2021, 5:55pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/7 "2021-05-25T17:55:57Z")
My fault; thanks guys. Yes, the Vision table is reacting to the quality. On the Perspective side, we are reacting to only the data right now. I’m going to open a feature request to have the Power Chart respond to the quality code that it gets back in the data payload. ---
**Author:** ![rberghammer](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/rberghammer/32/7150_2.png) [@rberghammer](https://forum.inductiveautomation.com/u/rberghammer)\ **Post date:** [May 25, 2021, 6:04pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/8 "2021-05-25T18:04:25Z")
Thanks @jball! Is this a bug or is there another purpose for the breakLine property that I’m not seeing? Either way, I’m happy this is getting some attention because I’ve been getting complaints from customers about this. ---
**Author:** ![jball](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jball/32/11128_2.png) [@jball](https://forum.inductiveautomation.com/u/jball)\ **Post date:** [May 25, 2021, 6:10pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/9 "2021-05-25T18:10:14Z")
No prob. On the Power Chart, `breakLine` only works with the absence of data right now. It just needs parity with how this is handled in Vision. ---
**Author:** ![rberghammer](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/rberghammer/32/7150_2.png) [@rberghammer](https://forum.inductiveautomation.com/u/rberghammer)\ **Post date:** [May 25, 2021, 6:27pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/10 "2021-05-25T18:27:56Z")
Ah, this is probably why @pturmel mentioned injecting null values. That makes sense. I was assuming bad quality was synonymous with missing data. ---
**Author:** ![lisa.clark](https://avatars.discourse-cdn.com/v4/letter/l/a87d85/32.png) [@lisa.clark](https://forum.inductiveautomation.com/u/lisa.clark)\ **Post date:** [June 12, 2021, 6:36pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/11 "2021-06-12T18:36:36Z")
Alongside this discussion, how do we turn off interpolation from Power Chart? We want to be able to see when comms go down or data is missing as well. Power chart interpolates between values so when a comm is down, we end up getting a slowly decreasing line when really it should’ve nulled out. Any updates? Ideas? ---
**Author:** ![Adriaan.leRoux](https://avatars.discourse-cdn.com/v4/letter/a/bbce88/32.png) [@Adriaan.leRoux](https://forum.inductiveautomation.com/u/Adriaan.leRoux)\ **Post date:** [June 13, 2021, 7:07pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/12 "2021-06-13T19:07:49Z")
You need to set interpolation to “step after” and then set your historical logging to discrete, not analogue. Something like that ---
**Author:** ![Frederik\_Beun](https://avatars.discourse-cdn.com/v4/letter/f/ecd19e/32.png) [@Frederik\_Beun](https://forum.inductiveautomation.com/u/Frederik_Beun)\ **Post date:** [January 24, 2022, 2:20pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/13 "2022-01-24T14:20:25Z")
@jball Any update on this feature to show only good quality datapoints in the Power Chart? This is a very important feature for us. ---
**Author:** ![jball](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jball/32/11128_2.png) [@jball](https://forum.inductiveautomation.com/u/jball)\ **Post date:** [January 24, 2022, 6:02pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/14 "2022-01-24T18:02:56Z")
The ticket has yet to be worked, but I just bumped the priority so we can get this moving. ---
**Author:** ![Frederik\_Beun](https://avatars.discourse-cdn.com/v4/letter/f/ecd19e/32.png) [@Frederik\_Beun](https://forum.inductiveautomation.com/u/Frederik_Beun)\ **Post date:** [March 5, 2022, 7:44am UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/15 "2022-03-05T07:44:06Z")
I saw in another ticket that there will be changes to the powerchart in the next sprint, is this ticket included? I definitely hope, Users are complaining as some of our old sensors give 32000 as bad sensor value. ---
**Author:** ![jball](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jball/32/11128_2.png) [@jball](https://forum.inductiveautomation.com/u/jball)\ **Post date:** [March 8, 2022, 5:12pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/16 "2022-03-08T17:12:26Z")
Yes, this one is underway. The update should be available in the next release. ---
**Author:** ![jball](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jball/32/11128_2.png) [@jball](https://forum.inductiveautomation.com/u/jball)\ **Post date:** [April 21, 2022, 10:22pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/17 "2022-04-21T22:22:37Z")
Quick follow-up This will be available in the 8.1.17 release. The changes were merged, and it should be available in the next nightly release for testing. ---
**Author:** ![tupanaster](https://avatars.discourse-cdn.com/v4/letter/t/5daacb/32.png) [@tupanaster](https://forum.inductiveautomation.com/u/tupanaster)\ **Post date:** [August 9, 2022, 12:46pm UTC](https://forum.inductiveautomation.com/t/perspective-power-chart-breakline-property/43430/18 "2022-08-09T12:46:50Z")
> [@lisa.clark](#): > > Power chart interpolates between values so when a comm is down, we end up getting a slowly decreasing line when really it should’ve nulled out. Any updates? Ideas? In 8.1.19 it still happens. I was wondering where I got all those changing values until I came across with posts about interpolation. > [@Adriaan.leRoux](#): > > You need to set interpolation to “step after” and then set your historical logging to discrete, not analogue. > > Something like that You are right. I was reading this post a while ago. > [@Power chart, are trends always interpolated?](https://forum.inductiveautomation.com/t/power-chart-are-trends-always-interpolated/40416/4): > > A prerequisite for using curvestepAfter, is that the measurement has to bee stored with a discrete Deadband Style: [image] If not you get these: I'm not sure how it supposed to work because an analog sensor is not discrete and it also doesn't have the behavior that the power chart is drawing by default. I wonder why there aren't more posts about it