Search found 102 matches

by akzy
06:53 Thu 11 Jul 2019
Forum: Port Conversations
Topic: Congratulations Tony!
Replies: 8
Views: 3076

Re: Congratulations Tony!

Always a pleasure buying with them. Well deserved to all the team.
by akzy
11:15 Sat 06 Jul 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

jdaw1 wrote:
09:53 Sat 06 Jul 2019
jdaw1 wrote:
01:23 Sat 06 Jul 2019
Please inspect jdawiseman.com/2019/20190705_Droplets.pdf.
And jdawiseman.com/2019/20190706_Droplets.pdf.
This example looks really sharp. I think asymmetric charges will annoy some people to hell, but I think it looks great.
by akzy
09:47 Sat 06 Jul 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

I like it. I think you will need to make some exceptions for your starting seeds in the gaps between circles to take into account global and local symmetries. Each seed cannot sit on a line of symmetry and must instead sit slightly off (so then it has a definite direction to fly off in, and isn't co...
by akzy
23:48 Fri 05 Jul 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

The absolute curvature of a field is given by the eigenvectors of the hessian matrix (should give two for our case), where the hessian matrix is hessian.PNG phi_tot is the vector in our case (quick snatch and grab from my thesis) This eigenvector can be evaluated spatially throughout the field. I su...
by akzy
21:05 Fri 05 Jul 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

∇v is the way to do it. Let’s say both ∇ and ∇× (grad and curl) are known. What expression is the distance that may be travelled without turning by an angle of more than a °? Hmmm. No idea. However, instead of a angle, you could just set a limit on the absolute value of the curl at that point - eff...
by akzy
10:39 Fri 05 Jul 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

Providing your postscript code is fine with calculating potgrid analytically It can. How? More of a curiosity thing than anything. Differentiating analytically using a computer is something I never fully understood (I'm still convinced that wolfram works using magic). If you know of any good explan...
by akzy
17:25 Thu 04 Jul 2019
Forum: Port Conversations
Topic: Cellar defenders - Waitrose VP (or SQVP) options
Replies: 15
Views: 4524

Re: Cellar defenders - Waitrose VP (or SQVP) options

Also shouldn't forget the offerings from Sainsbury's (2003/7) and Tesco's vintage port (I think currently 1997???) offering which you can usually grab for £20.
by akzy
11:00 Wed 03 Jul 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

This seems similar to what I proposed before except we don't do a line fit (as far as I understand) and you start on an arbitrary hexagonal grid. I think the seeds on circle edges might work better, but providing it's easy to play with, have a try both ways. 1. Create field seed spots at the edges o...
by akzy
12:19 Mon 01 Jul 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

Are you able to implement python in postscript? If so matplotlib has the stream plot coded out for you https://github.com/matplotlib/matplotlib/blob/master/lib/matplotlib/streamplot.py Another option is manually translate into whatever language. {Shudder} Translating that to PostScript would likely...
by akzy
17:34 Wed 26 Jun 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

Are you able to implement python in postscript? If so matplotlib has the stream plot coded out for you https://github.com/matplotlib/matplotli ... eamplot.py

Another option is manually translate into whatever language.
by akzy
08:50 Thu 20 Jun 2019
Forum: Organising Tastings and Get-togethers
Topic: Port, ≤1972, from THRA’s cellar
Replies: 46
Views: 12346

Re: Port, ≤1972, from THRA’s cellar

If it's before October, I will struggle to attend. Please don't delay on my behalf, more than happy to open up my seat.
by akzy
18:05 Wed 19 Jun 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

Charges good. Because circles touch, hexagonal was better. I never said it was an efficient packing :) - either way, looks like its producing decent results. As for the charges it may start to look a bit funky on large arrays due to edge effects and failing large scale symmetry. I think the solutio...
by akzy
12:01 Tue 18 Jun 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

From the imagery, would I be correct in thinking that each point represents a certain positive or negative charge, and therefore that the reason some points connect to others while others pairs to not is that essentially we are only seeing lines between points of opposite (or different) charge? If ...
by akzy
23:39 Mon 17 Jun 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

FYI, the only floating-point precision in PostScript is single : 23-bit mantissa ≈ one part in eight million; 8 bits exponent so maximum value ≈ ±10³⁸. Ok, I will try zeroing at 2^-23. I also had a little play with some other fun field related plots (whilst trying to diagnose). Whilst just a first ...
by akzy
23:28 Mon 17 Jun 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

Obviously a feature. With the asymmetry, it is bothering me too. I have a suspicion that it's because we're working up against imperfect machine precision. If you plot symmetries in along one plane, you might notice there's a field preference to one side. Perhaps the numbers will have to be adjusted...
by akzy
22:10 Mon 17 Jun 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

E.g.: PostScriptForm[(a + Sqrt[ b])^15] ➝ a b sqrt add dup dup mul dup mul mul dup dup mul mul Love it. Your approach is well suited to circles in a rectangular grid. Not so much in a hexagonal grid. E.g.: circlepos = { {0, 1, 1}, {Sqrt[3.]/2, 0.5, -1}, {Sqrt[3.]/2, -0.5, 1}, {0, -1, -1}, {-Sqrt[3....
by akzy
19:02 Mon 17 Jun 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

Below is the code I used. I've changed things slightly so that it can all be solved analytically. Firstly, we define a series of vectors in circlepos which correspond to x,y and charge respectively. Set these however you please (I'd suggest arranging as a n/quadrupole- only because of the work i do ...
by akzy
00:32 Mon 17 Jun 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

So I had a quick play (please ignore the asymmetrical crimes against mathematics) around in mathematica doing a point charge simulation, see below for results. Depending on how the circle is placed over, I think it would look ok? pointcharge.png I like the idea of doing it in Mathematica. I presume ...
by akzy
23:00 Sun 16 Jun 2019
Forum: Organising Tastings and Get-togethers
Topic: Software that makes placemats
Replies: 1242
Views: 426337

Re: Software that makes placemats

I used the placemats last night for a small tasting among a few physicists. Naturally, we decided to have field lines drawn on. I noted in the manual that Julian is displeased by these and whilst they are good for the majority of the page, some of the lines are non-physical (as circled). e field art...
by akzy
17:14 Sat 25 May 2019
Forum: Organising Tastings and Get-togethers
Topic: Port, ≤1972, from THRA’s cellar
Replies: 46
Views: 12346

Re: Port, ≤1972, from THRA’s cellar

Similar to everyone else, I'm keen - date and location providing.
by akzy
10:26 Tue 23 Apr 2019
Forum: Port Conversations
Topic: 2017 Declarations
Replies: 29
Views: 10541

Re: 2017 Declarations

Taylor's have declared (and Vargellas Vinha Velha) .
https://taylor.pt/en/news/taylors-annou ... velha-2017
by akzy
11:11 Thu 18 Apr 2019
Forum: Port Tasting Notes
Topic: NV Quinta das Lamelas Rose
Replies: 0
Views: 637

NV Quinta das Lamelas Rose

NV Quinta das Lamelas Rosé Port Light pink colour. The nose was nothing particularly abnormal for a rose port - fresh and floral. Hints of classic bubblegum make it a fun, enjoyable port - perfect on its own as a refreshing drink on a hot summer's day or mixed into a light cocktail. Score - will be...
by akzy
11:00 Thu 18 Apr 2019
Forum: Port Tasting Notes
Topic: 2017 Niepoort
Replies: 1
Views: 760

Re: 2017 Niepoort

Tried this at bft. I didn't make notes for this but I have it as the highlight of the vintage table. I shall certainly be trying to get a case.
by akzy
10:56 Thu 18 Apr 2019
Forum: Port Tasting Notes
Topic: 2016 Maynard
Replies: 0
Views: 658

2016 Maynard

Deep burgundy colour (who actually knows - I'm colourblind). The nose is pleasant and fruity. I believe the best way to describe this Port is 'liquefied raisins'. The taste initially is strong and present, however lingering tastes disappears quicker than others on show. Generally speaking quite smoo...
by akzy
07:27 Wed 17 Apr 2019
Forum: Organising Tastings and Get-togethers
Topic: Warre's unfiltered lbv
Replies: 14
Views: 5884

Re: Warre's unfiltered lbv

I've got 2004. Ioana would be keen as well. Might up for adoption of something.