Re: [NTG-context] Implicit plots/level curves possible?

11 Oct 2018

      On Tue, 9 Oct 2018, Alan Braslau wrote:
...
On Mon, 8 Oct 2018 17:56:24 -0400 (EDT)
Aditya Mahajan  wrote:
...
Here is a proof of concept implementation in Lua + MP so that you can use:
\ContourPlot
   [
     function=2*x^5 + x*y + y^5,
     x={0, 2},
     y={-2, 0.5},
     n=1000, % Number of discretization points
   ]
The code is fairly fast. But be careful. As with all ConTeXt key-value
assignment, `x = { ...}` is different from `x={...}`. I am being a bit
lazy here, and haven't adapted the metapost code to draw the axes to adapt
to the function.
Hans and I played with Aditya's demonstration, to complete the example.
It demonstrates some fun lua+MP+ConTeXt tricks:
Looking at lua-mplib.mpvi, isn't it better to use MP namespace (instead of 
mp) for user defined functions?

The metafun manual says that one can omit the prefix `lua` and simply use 
`mp` or `MP`. That does not seem to work.

Aditya