Dashboard line chart not working

iijan · 17 May 2020 12:15

having bit of an issue trying to display a line chart using stored data,. here is the payload i am sending to the dashboard ui chart node

{"label":"label","data":[{"x":1589785353387,"y":74},{"x":1589785371831,"y":74},{"x":1589785380067,"y":74},{"x":1589785440072,"y":74},{"x":1589785500067,"y":75},{"x":1589785561766,"y":77}],"series":"Humidity"}

what am i doing wrong?..

Colin · 17 May 2020 12:49

It doesn't look much like the format described in the docs (under Stored data). Not nearly enough square brackets about the place.

github.com

node-red/node-red-dashboard/blob/master/Charts.md

# Node-RED-Dashboard Charts

## Live data

To display live data just wire up an input with a `msg.payload` that contains a number.


### Line charts

To display two or more lines on the same chart then each `msg` must also contain `topic`
property that identifies which data series it belongs to - for example:

    {topic:"temperature", payload:22}
    {topic:"humidity", payload:66}

Each series will be represented by a different colour.
Alternatively you can use the property `series` instead of `topic` if you prefer.

It is possible to create "gaps" in line charts by sending either a null or boolean false as the payload.

This file has been truncated. show original

iijan · 18 May 2020 05:31

thanks! it was the square brackets!
nested array

system · 1 June 2020 05:31

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.

Topic		Replies	Views
Chart line in Dashboard Dashboard	11	705	17 July 2022
Reading from an Array into a chart Dashboard	5	4616	1 January 2021
Display static graphs like Sine FAQs	1	1158	12 August 2019
Need help with line chart Dashboard	30	7008	16 July 2019
Creating a Chart based on an array Dashboard	3	996	19 March 2021

Dashboard line chart not working

Related Topics