In this video I will show you how you can draw and edit a graph.

In this example a graph which displays pressure against time is shown with the buttons on the screen to adjust the pressure and time as well as the units.

First select the selection you wish to edit by pressing the colour coded button, once selected press one of the 4 direction buttons to adjust the parameters, you can see the time changes along the bottom of the graph whilst the pressure value beneath the actual line.

The demonstration also allows you to convert the units by pressing the PSI/Bar button.
This project as well as many others can be found on the itrontft website under projects.