INSTALL PYTHON (needed for pip)
https://www.python.org/downloads/release/python-363/
STANDARD LOCATION, ADD PYTHON TO PATH

MAKE A VENV and PUT YOUR DEPENDENCIES IN THERE
cmd: 'c:\path\to\python\python' -m venv '\path\to\my\drawing\venv'
cmd: \path\to\venv\Scripts\activate
Download - http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy -- you want the version that matches your version of python
cmd: (in venv) pip install 'path\to\numpy\wheel\you\just\downloaded'
cmd: (in venv) pip install svgwrite

SOP TO SVG
Download (or clone) SOP to SVG and put it somewhere you can find it in a sec -
https://github.com/raganmd/touchdesigner-sop-to-svg
alt - from Guillame Onfroy https://gitlab.com/aaaaahaaaaa/TouchDesigner

IF YOU WANT TO PLOT - INSTALL INKSCAPE
https://inkscape.org/en/

IF YOU WANT TO PLOT - INSTALL AXIDRAW PACKAGE
http://wiki.evilmadscientist.com/Axidraw_Software_Installation

IF YOU WANT TO BE COOL - INSTALL SUBLIME 3
https://www.sublimetext.com/3

IF YOU LIKE TO TAKE RISKS - DOWNLOAD AXISCALER
https://github.com/ancillarymagnet/touchTools/blob/master/axiscaler/axiscaler.tox

ADD YOUR VENV to THE TD PYTHON PATH
in TD - add an Execute DAT, enable Start par, add to onStart():

import os
import sys
default = 'C:/Program Files/Derivative/TouchDesigner099/bin/lib/site-packages'
default_norm = os.path.normpath(default)
if default_norm in sys.path:
    sys.path.remove(default_norm)
mypath = 'path/to/your/venv/'
mypath_norm = os.path.normpath(mypath)
if mypath_norm not in sys.path:
    sys.path.append(mypath_norm)