search

google-code-export / pysal

Automatically exported from code.google.com/p/pysal
Other
1 stars 1 forks source link

upstream app geodaspace has an option for epanechnikov kernels but these were removed from pysal #222

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
revisit why we removed this from pysal and work on consistency with upstream 
apps

http://code.google.com/p/pysal/source/diff?spec=svn1027&r=1027&format=side&path=
/trunk/pysal/weights/Distance.py

Original issue reported on code.google.com by sjsrey on 19 Oct 2012 at 7:31

GoogleCodeExporter commented 9 years ago

Original comment by sjsrey on 19 Oct 2012 at 7:32

GoogleCodeExporter commented 9 years ago 
Epanechnikov in geospace maps to quadratic in pysal.  This was based on the 
following:
"""
Charlie:
Works so far on my Mac :-)
The order of the kernel functions should be:
- uniform
- triangular (Bartlett)
- Epanechnikov (same as quadratic, but used more often)
- quartic (or bisquare, both are used)
-Gaussian
""" Email from Luc, 5/8/11

Original comment by schmi...@gmail.com on 19 Oct 2012 at 8:33

GoogleCodeExporter commented 9 years ago

Original comment by sjsrey on 8 Feb 2013 at 3:53