Plot two different measurements with same time axis

[hyd]

Hello guys, I don’t know whether this fits here or not. I made two different Programms, one which measures the magnetic field with a sensor and another one measured the current.

I want to plot both of the signals in one graph with different y- axis and one time axis in seconds, maybe with matlab or excel. So it looks like this

How could I possibly do that? For example I make a measurement for 1 min on the first Programm and copy the measurements and put it in a variable in matlab and then make another messurement with the other Programm for one minute and do the same. But how do I plot them with the same x time axis?

[J-M-L]

why would they have the same time coordinate if you take the measurement 1 minute appart?

if time accuracy does not matter, then to your question this this how it would look like

void loop() {
  t = millis();
  y1 = measure1();
  y2 = measure2();
  export(t, y1, y2);
}

where measureN() are the functions to perform the measure and export() is the function that will send the result out to whatever you decided to export to

then it's a matter of creating the plot in the software you picked (excel, matlab, ...)