I am initially creating a graph using last hours historical data retrieved from a WLAN controller and re-formatted into a Series array line chart as per the format specified at: https://github.com/node-red/node-red-dashboard/blob/master/Charts.md Works super!! [image] I then periodically inject…

Some progress, and now :clock10: for :bed:... dceejay comment to remove timestamp from the updates helped in one part :+1: Colin's comment about timestamp format has moved it closer to resolution :+1: Thx for your inputs. Does look like there is a close relationship between the date/time format …

What have you got the fields for X-Axis set to in the chart config?

Hi Colin - I have the X-axis duration set to 2 hours (tried 3 hours and 1 hour and setting 1000 points). The X-axis Label set to automatic (have also tried setting it to HH:mm). Maybe I should be using Labels instead of Series when sending the initial historic data arrays? I notice the graph data …

The timestamps aren't in ISO format as they haven't got the timezone specified. It may be better to provide timestamps in javascript ticks anyway (which are in UTC of course). Can you show the graph before and after adding new points please, it might help. Edit, oh you have, sorry, having another…

Is the time at the right hand side showing the current time in the browser timezone?

If the added data is actually live then there is no need to include the timestamp as it will get added at the current time - you just need topic and payload. As long as the topics match up then it will add to the existing series. The window will get trimmed as per your settings - either time window…

Hi Colin - to make it easier I just taken a new image after data reset and the time at the right hand is showing GMT (its now BST so should actually be showing 5:26pm). So I do need to fix the array data timestamp to be correct for my local timezone. [image] I have taken out the timestamp from th…

If you add a debug to the output of the chart node - then let it run a bit - you should see the data from the graph in a format that is what the input would want... so you should be able to compare them to ensure they look the same layout, have all the same fields in same format etc...

Ok, what I see on the chart output debug is interesting, but not sure it leads me to any conclusions as to why the history gets cleared for 2.5/5Ghz. Firstly, on the historical input to chart and output - data format in both looks same when I look through the arrays objects and data: [image] The…

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Inserting additional data points into a Series graph created with an array

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system Closed 14 June 2020 21:59 11

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Inserting additional data points into a Series graph created with an array

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