Price trend of a product on a graph

[Sonia_C]

hello everyone
I wanted to create an app where the user enters the name of the product for example: Milk and shows the price graph of the product which is updated daily by the community. I don't know how to start
Can anyone help me?
thanks

I'll make a clarification
I wanted to create an app where users can both view and update
the user can search for a product in the search bar for example: Milk
and the app shows the price trend graph
the user can also update the price
I tried with tiny db but I don't know how to make the graph read tiny db
Thanks to anyone who will help me🤗

[Sonia_C]

please can someone answer me I need it
thanks

[TIMAI2]

You appear to have the product, the button and the graph.

Show your relevant blocks and how you fetch and set your data.

[ABG]

FAQ Section: Charts and Graphs

AI2 Charts Component AI2 Charts Component Help - MIT Oct 2022 AI2 Charts Usage Guide - @elatoskinas Charting CSV Data by DateTime in the AI2 DataFile component - ABG Realtime Chart sample - @Kevinkun Charting from ESP32 via Bluetooth - @Patryk_F Javascript based Chart..js examples / Spanish / Juan Antonio How to generate an animated Pie Chart using the Chart.js library Gauge Charts Plotly JS file to display real time data - Giriraj Pawar Highcharts Setup on AI2 Charting Extensions Char…

See links 3 and 4

[Sonia_C]

hi TIMAI2
that was just a sketch to show you how I wanted to make the app
there are no blocks

[manny_juan]

Look up linear regression in the forum. The tool will give you the equation of a straight line that "passes" thru all points, sort of, in an average way. If you extend the line appropriately you will get sn (average) prediction.
Here's an example

[Sonia_C]

So I'll make a clarification
I wanted to create an app where users can both view and update
the user can search for a product in the search bar for example: Milk
and the app shows the price trend graph
the user can also update the price
I tried with tiny db but I don't know how to make the graph read tiny db
Thanks to anyone who will help me🤗

[Sonia_C]

Thanks but I don't understand what it has to do with it sorry

[Sonia_C]

Thanks for the links but I didn't understand almost anything. I made a clarification above

[ABG]

@Sonia_C

I don't know how to make the graph read tiny db

See Bluetooth Client Polling Rate - #12 by ABG

[Sonia_C]

Screenshot of how I would like the app

[Sonia_C]

Thanks so much, I'll try now

[Sonia_C]

Can someone help me please?
Pricetrend.aia (94.8 KB)
Thanks

[ABG]

Pricetrend1.aia (95.3 KB)

This is embarrasing.

The TinyDB data feed does not work as documented.

Here is a work around

I had to restrict the price data feed to number only, and to move that Euro symbol to the Label.Text.

I added a date picker, with Day of Month as the x axis.
That let me enter back data to prove the line works.

This should get you started.

[Sonia_C]

Thanks so much
It works perfectly
It really help me thanks
Bye!