Hi. It looks like the chart dashboard option is only good for numbers. Is there are a way to plot history of Boolean variables?
On most systems, a bool is nothing more than a byte with the values 0 and 1. So if you send something, you will send a 0 or a 1. And those are numbers 
Note: No knowledge whatsoever of IoT Cloud related stuff.
int mynum = mybool ? 1 : 0;
Maybe you can plot the bits, 0s (false) and 1s (true), to a string or somekind of array?
Is this like Serial Plotter?
If the range 0 to 1 is too small to chart, you could multiply by a constant:
Serial.print(myBoolean * 200);
Thanks for the replies! Sorry, I should have made clear my question is specific to IoT Cloud, which is why I posted in this spot.
In IoT cloud, there is a Chart widget for the dashboard, but it appears to only allow selection of variables of type int or float. Yep, as suggested, I can create an additional variable in my sketch and convert boolean to int and chart that, but I guess I was wondering if there was already a chart option for booleans that I'd missed.
The IoT developers could add bool with ease, but don’t hold your hopes
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