Dear Christoph and Gillherm,
I think that is indeed a bug.
I simplified the code to minimum, and could not find any error or
explanation.
My matplotlib is 3.4.3
kwant 1.4.3 installed on windows.
Regards,
Adel
################################################################
import kwant
from matplotlib import pyplot
lat1 = kwant.lattice.cubic(a=1,name='first')
lat2 = kwant.lattice.cubic(a=1,name='second')
syst = kwant.Builder()
syst[(lat1(x, y, z) for x in range(5) for y in range(5) for z in [15])] = 0
syst[(lat2(x, y, z) for x in range(5) for y in range(5) for z in [5])] = 0
def Color(site):
if site.family == lat1: return 'red'
else: return 'green'
kwant.plot(syst, site_color=Color)
On Mon, Apr 17, 2023 at 7:52 PM Christoph Groth <[email protected]>
wrote:
> [email protected] wrote:
>
> > The following code completely reproduces the bug, and the #sys shows
> > how it deslocates. Taking of some f the lattices also doesn't fix, it
> > can be checked.
>
> Now I understand what you meant: in the figure you linked to previously,
> the color of the single “stray” site does not match the color of the
> “humps” with which it shares the same site family.
>
> Before you sent the example I wrongly believed that your issue might be
> about the sorting order of sites with regards to which there used to be
> some problems. However, I would be surprised if the color issue you
> observe was caused by matplotlib. It should be able to plot a circle in
> the color it is told to do.
>
> So that’s indeed a strange problem!
>
> However, I cannot reproduce it. In your script, I uncommented the line
> marked with “bug?” and obtain the attached plot. The separate site has
> the same color (here: yellow) as the two humps that are made with
> lat_sc, as it should be.
>
> This is with Python 3.9, Kwant 1.4.3, and matplotlib 3.3.4, running on
> Debian stable. What is your environment?
>
> Christoph
>
--
Abbout Adel
