Hi everybody! frist sorry about english. im new in node red. i want to show data in html chart from file.(file = saved data from chart in dashboard).it is log of my device .i dont know what can i do.

Hi there ! I don't think you're problem is node-red related ^^ I think this is what you're searching for https://stackoverflow.com/questions/101574/how-to-open-an-external-file-from-html

It is not clear to me exactly what you want to do. Can you try and explain again please.

i want to create html chart in group in node red dashboard but every chart that i saw create with data that in writing function but i want to read data from json file which get from another chart in dashboard.

i want to create html chart in group in node red dashboard but every chart that i saw create with data that in writing function but i want to read data from json file which get from another chart in dashboard. in a simple word i want to create html chart that show log.

Hi - it's not clear what mean as you say you already have the data in a chart in the dashboard... so why feed it to another chart ? you could just send the data to both ?

Frist thanks for emphasize to my problem.i want to send some data to my chart in dashboard and when show them after that save log from chart with date and then when i need to see log i search in file and show all of them in another in html chart .

[{"id":"2b0df91b.758286","type":"http response","z":"8d3931b1.b63d6","name":"","statusCode":"","headers":{},"x":630,"y":3580,"wires":[]},{"id":"cd613eab.0f406","type":"http in","z":"8d3931b1.b63d6","name":"","url":"/chart1","method":"get","upload":false,"swaggerDoc":"","x":70,"y":3580,"wires":[["a05f609b.db6e2"]]},{"id":"a05f609b.db6e2","type":"file in","z":"8d3931b1.b63d6","name":"json file","filename":"C:\Users\user\AppData\Roaming\npm\node_modules\node-red\public\1.json","format":"utf8","chunk":false,"sendError":false,"x":280,"y":3580,"wires":[["84c4d21f.289"]]},{"id":"84c4d21f.289","type":"template","z":"8d3931b1.b63d6","name":"","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"\n \n\n\n\n <div style="width: auto; height: auto; min-width: 50px; margin: 0px; padding: 5px; font-family: "Trebuchet MS", Helvetica, sans-serif; font-weight: normal; font-style: normal; font-size: 14px; color: black; text-shadow: rgba(0, 0, 0, 0.1) 1px 1px 1px; text-align: left; border: 1px solid rgb(54, 158, 173); background: rgba(255, 255, 255, 0.9); text-indent: 0px; white-space: nowrap; border-radius: 0px; user-select: none;">04 Mar 17 sensor1: 82.7 sensor2: 35.9 sensor3: 43.9 sensor4: 23\n \n\n","output":"str","x":460,"y":3580,"wires":[["2b0df91b.758286"]]}]

how can put data from file to template.

Maybe this will help - https://flows.nodered.org/flow/92920b4fd450bf92a3035e061947daa0 It shows how to save data from a chart and restore it. (It doesn't edit/search/slice it)

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Data from file to html chart

Dashboard

shrickus 28 September 2018 20:14 4

A quick search on this forum for "dashboard table" gives some good examples ...

Topic		Replies	Views
Simple chart export to html instead of chart node General	0	1045	22 April 2021
Can anyone teach me how to display CSV file data into the dashboard ( for example, a line chart ) Dashboard node-red-dashboard	16	2872	28 December 2021
Charting large data files Dashboard	8	496	18 February 2022
JSON file with a lot of sensors data into Charts General	9	938	1 June 2020
Plot data in a dashboard chart General	10	9382	12 February 2020

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Data from file to html chart

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