# Dashboard and Global variables

**URL:** <https://discourse.nodered.org/t/dashboard-and-global-variables/54465>\
**Category:** Dashboard\
**Created:** [29 November 2021 15:27 UTC](https://discourse.nodered.org/t/dashboard-and-global-variables/54465 "2021-11-29T15:27:41Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![krambriw](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/krambriw/32/5429_2.png) [@krambriw](https://discourse.nodered.org/u/krambriw)\
**Post date:** [29 November 2021 17:23 UTC](https://discourse.nodered.org/t/dashboard-and-global-variables/54465/3 "2021-11-29T17:23:59Z")

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If you have many datapoints, you need to find another solution. I am myself using Highcharts but also other recommendations have been suggested. Anyway, Highcharts is fast and nice, you can read here how to use it in NR:

> **[Node Red and HighCharts - Scargill's Tech Blog](https://tech.scargill.net/node-red-and-highcharts/)**
>
> First things first – HighCharts are not free for commercial use. However, for your own website, a school site or a non-profit organisation they are free to use. You are also OK to make modifications. So – that’s the “cover my back” bit out of the way...

> [@Plot a time series using highcharts](https://discourse.nodered.org/t/plot-a-time-series-using-highcharts/7429):
>
> I'm trying to ceate a plot using the highcharts. I just want to create the line and avoid filling the area from the line. [{"id":"31056003.3074b","type":"inject","z":"b5ebaee.e0addd","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":220,"y":120,"wires":[["792b08d4.a2c288"]]},{"id":"f8df1757.d31088","type":"ui\_template","z":"b5ebaee.e0addd","group":"90dc9d5d.7ddcf","name":"HiChart","order":0,"width":0,"heig…

The exampe below is from my heatpump, I do not know exactly how many datapoints it is in there but it is not slow at all

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/8/e/8e04a1671719991a6aa81babc556bf38e1fd635f.png)

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