Hello Fred, for which board and using which programming language?
Do you want to create a web server on an ESP32 that plots graphs?

Hi Rui
I am using TTGO LoRa32 OLED boards developping programs with Arduino 1.8.7 IDE
I would like to monitor board activities in particular
Temperature via OW bus
GPIO Analog inpouts
GPIO Didital In and Out puts
via simple graphs vs time
RGS
Fred

To be honest, to run a full web server with graphics that update in real time, I think you need to know “a lot” of JavaScript. Are you familiar with that web programming language?
In my option, it’s a bit tricky to setup a real-time web server for data using an ESP32… I prefer to use my ESP32 to send data to a home automation platform and plot the values there… (in Node-RED, Home Assistant, etc)

Thanks for your answer
I will keep investigating the  matter since setting up a full home automation platform just to plot few data is a bit of an overkill
I will let you know

You might also consider sending that data to an online service like thingspeak.com . With thingspeak you can plot your data and access it from anywhere. That might be a better alternative

Tanks Rui
I will look into this option too
Rgs