Draw math formulas with ggplotd

[Edwin van Leeuwen via Digitalmars-d-learn]

On Saturday, 17 September 2016 at 11:57:17 UTC, John Colvin wrote:
> On Saturday, 17 September 2016 at 11:45:07 UTC, Edwin van 
> Leeuwen wrote:
>> But I assumed he meant adding the formula onto the plot.
>
> Hah, yes, I should have read the question better.

Rereading the question I am actually not sure which of us 
interpreted the question correctly :)

> Do you support embedding outside images? When I wanted nice 
> mathematical notation generated quickly in D I have used pyd to 
> call matplotlib's builtin math rendering (much quicker than a 
> full latex roundtrip).

You can draw onto any cairo surface, so this should be possible. 
You'd just need to figure out how to cast/convert a matplotlib 
image to a cairo image.