I've been having such a hard time understanding how to use Node Red's functionality in reading a csv file and converting it into a scatter plot chart. I have a CSV file that looks like this: 09-16-1989, 45 09-16-1990, 50 09-16-1991, 33 09-16-1992, 23 .... It has over 88,909 lines but I need t…

You want to show a scatter plot with 89000 points on it? I think that may impose quite a load on the browser. I think you may need to rationalise the data before plotting it.

I'm just trying to get Node Red to read a csv file and then plot it. I don't understand why its so difficult and its actually simpler to write it in code in Python or any other high level language, but in Node Red its almost an impossible task. What am I missing here? No one in the class even knows …

No, I'm sorry it doesn't. I tried your code but nothing shows up, its just blank so I'm not sure what is going on for the dashboard and I feel that it has something to do with Node Red's design.

[image] person09: What am I missing here? No one in the class even knows what is going on Can you share your flow in its current state. I will also need a sample file. Use ctrl-e to export flow.

Hi, this is the exported code. I've talked to my peers and we tried everything, it doesn't make sense and looked everywhere on the web. I am using a pathfile from my C drive. Also I am testing a file that looks like this: 13:53 127.96 13:53 24.65 13:53 24.49 13:53 24.9 Below is the code…

All you have posted is a single file node. Select all nodes of interest before exporting Also... In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote ```) ``` code goes here ``` You can edit and correct…

If you put a debug after the csv node what do you get? I ran your flow with a template 13:53 127.96 13:53 24.65 13:53 24.49 13:53 24.9 The cvs does not appear to recognise the tabs in the cvs file. here is an example both templates look the same and the second was created with the tab k…

How do I convert a csv file into a chart?

General

Steve-Mcl 22 July 2022 06:15 2

Does this help: Problem with X/Y graph with ui_graph - #8 by Steve-Mcl

Topic		Replies	Views
Can anyone teach me how to display CSV file data into the dashboard ( for example, a line chart ) Dashboard node-red-dashboard	16	2818	28 December 2021
Create a CSV file and from CSV to chart Dashboard	2	4142	3 April 2020
CSV to graph issues General	17	271	9 June 2024
Problem visualizing CSV data in a Line chart. I can read the timestamp and temperature data but i don't see the graph General node-red-dashboard , chart , function-node , mqtt	10	993	28 February 2022
Display data from csv table to a chart Dashboard	4	3727	13 April 2021

How do I convert a csv file into a chart?

Related topics