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----- Original Message -----
> From: "Eric Emsellem" <eri...@es...>
> To: mat...@li...
> Sent: Wednesday, July 12, 2017 8:18:28 AM
> Subject: [Matplotlib-users] Creating custom markers as the union of complex vertices

> Hi
> 
> I have been looking for an elegant/simple (working!) solution to create
> new complex markers for matplotlib.
> 
> For example, I would like to design a new marker which is the union of a
> set of vertices, for example (just an example), two petals which are
> symmetric (see verts1 and verts2) and two lines above and below (see
> verts3, and verts4). I would also like to have the petal possibly filled
> (or not) and the edgecolor of each vertices with possibly various
> colours (one petal is blue, the other is orange). How should I proceed?
> 
> A naive way forward is to do something like (for a double petal, the
> left one not being filled up, the right one being filled, see the
> definition for verts1, verts2, verts3, verts4 below):
> 
> ## Code
> x = rand(10)
> y = rand(10)
> verts = [verts1, verts2, verts3, verts4]
> fc = ['k', 'None', 'None', 'None']
> ec = ['b', 'orange', 'k', 'k']
> 
> for lverts, lfc, lec in list(zip(verts, fc, ec)) :
>      scatter(x, y, marker= (lverts, 0), facecolor=lfc, edgecolor=lec,
> s=1000, label='My symbol')
> 
> ==> HOWEVER, since these are done in a for loop, it is not considered as
> a single marker when I do, for example, :
> 
> legend(loc=0)
> 
> QUESTION: how should I manage this? (couldn't find the answer on the net)
> 
> Suggestion are most welcome!
> 
> Thanks!
> Eric
> ======================================
> ###### Definition for the vertices
> if 1:
>     # verts1:
>     size, angrad = 10., 0.
>     rx = 4. * size
>     theta = np.linspace(-pi / 4., pi / 4., 151)
>     x = rx*np.sqrt(cos(2.*theta))*cos(theta)
>     y = rx*np.sqrt(cos(2.*theta))*sin(theta)
>     rotx = x * cos(angrad) + y * sin(angrad)
>     roty = -x * sin(angrad) + y * cos(angrad)
>     verts1 = list(zip(rotx,roty))
> 
>     # verts2:
>     size, angrad = 10.,  np.pi
>     rx = 4. * size
>     theta = np.linspace(-pi / 4., pi / 4., 151)
>     x = rx*np.sqrt(cos(2.*theta))*cos(theta)
>     y = rx*np.sqrt(cos(2.*theta))*sin(theta)
>     rotx = x * cos(angrad) + y * sin(angrad)
>     roty = -x * sin(angrad) + y * cos(angrad)
>     verts2 = list(zip(rotx,roty))
> 
>     # verts3
>     verts3 = list(zip([0.,0.],[0,0.1]))
> 
>     # verts4
>     verts4 = list(zip([0.,0.],[-0.1,-0.03]))
> 
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Hi

I have been looking for an elegant/simple (working!) solution to create 
new complex markers for matplotlib.

For example, I would like to design a new marker which is the union of a 
set of vertices, for example (just an example), two petals which are 
symmetric (see verts1 and verts2) and two lines above and below (see 
verts3, and verts4). I would also like to have the petal possibly filled 
(or not) and the edgecolor of each vertices with possibly various 
colours (one petal is blue, the other is orange). How should I proceed?

A naive way forward is to do something like (for a double petal, the 
left one not being filled up, the right one being filled, see the 
definition for verts1, verts2, verts3, verts4 below):

## Code
x = rand(10)
y = rand(10)
verts = [verts1, verts2, verts3, verts4]
fc = ['k', 'None', 'None', 'None']
ec = ['b', 'orange', 'k', 'k']

for lverts, lfc, lec in list(zip(verts, fc, ec)) :
      scatter(x, y, marker= (lverts, 0), facecolor=lfc, edgecolor=lec, 
s=1000, label='My symbol')

==> HOWEVER, since these are done in a for loop, it is not considered as 
a single marker when I do, for example, :

legend(loc=0)

QUESTION: how should I manage this? (couldn't find the answer on the net)

Suggestion are most welcome!

Thanks!
Eric
======================================
###### Definition for the vertices
if 1:
     # verts1:
     size, angrad = 10., 0.
     rx = 4. * size
     theta = np.linspace(-pi / 4., pi / 4., 151)
     x = rx*np.sqrt(cos(2.*theta))*cos(theta)
     y = rx*np.sqrt(cos(2.*theta))*sin(theta)
     rotx = x * cos(angrad) + y * sin(angrad)
     roty = -x * sin(angrad) + y * cos(angrad)
     verts1 = list(zip(rotx,roty))

     # verts2:
     size, angrad = 10.,  np.pi
     rx = 4. * size
     theta = np.linspace(-pi / 4., pi / 4., 151)
     x = rx*np.sqrt(cos(2.*theta))*cos(theta)
     y = rx*np.sqrt(cos(2.*theta))*sin(theta)
     rotx = x * cos(angrad) + y * sin(angrad)
     roty = -x * sin(angrad) + y * cos(angrad)
     verts2 = list(zip(rotx,roty))

     # verts3
     verts3 = list(zip([0.,0.],[0,0.1]))

     # verts4
     verts4 = list(zip([0.,0.],[-0.1,-0.03]))

Hi

I have been looking for an elegant/simple (working!) solution to create 
new complex markers for matplotlib.

For example, I would like to design a new marker which is the union of a 
set of vertices, for example (just an example), two petals which are 
symmetric (see verts1 and verts2) and two lines above and below (see 
verts3, and verts4). I would also like to have the petal possibly filled 
(or not) and the edgecolor of each vertices with possibly various 
colours (one petal is blue, the other is orange). How should I proceed?

A naive way forward is to do something like (for a double petal, the 
left one not being filled up, the right one being filled, see the 
definition for verts1, verts2, verts3, verts4 below):

## Code
x = rand(10)
y = rand(10)
verts = [verts1, verts2, verts3, verts4]
fc = ['k', 'None', 'None', 'None']
ec = ['b', 'orange', 'k', 'k']

for lverts, lfc, lec in list(zip(verts, fc, ec)) :
      scatter(x, y, marker= (lverts, 0), facecolor=lfc, edgecolor=lec, 
s=1000, label='My symbol')

==> HOWEVER, since these are done in a for loop, it is not considered as 
a single marker when I do, for example, :

legend(loc=0)

QUESTION: how should I manage this? (couldn't find the answer on the net)

Suggestion are most welcome!

Thanks!
Eric
======================================
###### Definition for the vertices
if 1:
     # verts1:
     size, angrad = 10., 0.
     rx = 4. * size
     theta = np.linspace(-pi / 4., pi / 4., 151)
     x = rx*np.sqrt(cos(2.*theta))*cos(theta)
     y = rx*np.sqrt(cos(2.*theta))*sin(theta)
     rotx = x * cos(angrad) + y * sin(angrad)
     roty = -x * sin(angrad) + y * cos(angrad)
     verts1 = list(zip(rotx,roty))

     # verts2:
     size, angrad = 10.,  np.pi
     rx = 4. * size
     theta = np.linspace(-pi / 4., pi / 4., 151)
     x = rx*np.sqrt(cos(2.*theta))*cos(theta)
     y = rx*np.sqrt(cos(2.*theta))*sin(theta)
     rotx = x * cos(angrad) + y * sin(angrad)
     roty = -x * sin(angrad) + y * cos(angrad)
     verts2 = list(zip(rotx,roty))

     # verts3
     verts3 = list(zip([0.,0.],[0,0.1]))

     # verts4
     verts4 = list(zip([0.,0.],[-0.1,-0.03]))

New contact information for Peter & Leila Shenkin and
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Peter's Stories by Peter S. Shenkin
http://tinyletter.com/shenkin
325 W. 52nd St New York, NY 10019 USA

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Back When Gas Was 30¢ A Gallon

Peter S. Shenkin

Back when gas was 30¢ a gallon,

And love was only 60¢ away

Thus sang Tom T. Hall. I can’t say this story is exactly about that, but it took place exactly about then.

Mise en scène: Grant’s Tavern, Blairsville Precinct, Williamson County, (Southern) Illinois.

Ole Grant kept an overcoat hanging on a hook behind the door in all seasons. If there was trouble, he'd put it on. Everyone knew there was a revolver in the pocket. Or at least, everyone believed it, which was enough.

He had live country bands Friday and Saturday nights. He had a bowling machine, pinball, a few other games and a juke box. He had a bar, a roomy dance floor stocked with country honeys and live country music on the weekends, tables on an elevated platform at the back maybe 1/3 the size of the dance floor. The platform, that is.

One Saturday evening, 1969, I took a bunch of my hippie friends there. Including Alberto Navarro from Bogota and Mike Bartlett, a computer nerd who raced small cars. Both now deceased, which I am sorrier than you can imagine to have to say. Ron Manning and Peter Munch (grandnephew of the artist Edvard Munch) as well. Probably John Harty. We had spent the day imbibing various licit and illicit substances in the beautiful countryside and perhaps had had lunch at Ma Hale's in Grand Tower, unless that was another day, but either way we thought Blairsville would be good for a night cap. They put a few tables together in the back for us and the waitress got busy with other customers.

Alberto got annoyed at the lack of attention. He jumped up on a chair and shouted if they didn't come and serve us pronto he was going to put LSD in the Blairsville water supply. The rest of us were looking around nervously and trying to calm him down, hoping that Ole Grant wouldn't resort to the overcoat.

Just then the waitress came over and called Alberto "Dear" and asked what she could get him. That calmed him down considerably, which calmed the rest of us down considerably. There was no way they could have understood Alberto's accent anyway (which he never lost till his dying day, though his command of the English language was better than mine).

Either way, they seemed to be used to this sort of thing, which was fine by us.

Oh -- Tom T. Hall’s song is here <https://www.google.com/url?q=https://www.youtube.com/watch?v%3DgbPJ3Q9Tfbs&amp;sa=D&amp;usg=AFQjCNFQzJgaaMiV7bubM7SgWvIfwh3xsQ>. <https://www.google.com/url?q=https://www.youtube.com/watch?v%3DgbPJ3Q9Tfbs&amp;sa=D&amp;usg=AFQjCNFQzJgaaMiV7bubM7SgWvIfwh3xsQ>

--

Links to all my stories can be found here <https://www.google.com/url?q=https://docs.google.com/document/d/1whaI0Yvg66jyy6e4Hbqd6aJEhsV36Cmlru3lkRfQaro/pub&amp;sa=D&amp;usg=AFQjCNFWcFN1ecotzZSkd43UrVRggQgosw>.
Peter's Stories by Peter S. Shenkin
http://tinyletter.com/shenkin
325 W. 52nd St New York, NY 10019 USA

Sent to mat...@li...
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Delivered by:
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Hi

I have been looking for an elegant/simple (working!) solution to create 
new complex markers for matplotlib.

For example, I would like to design a new marker which is the union of a 
set of vertices, for example (just an example), two petals which are 
symmetric (see verts1 and verts2) and two lines above and below (see 
verts3, and verts4). I would also like to have the petal possibly filled 
(or not) and the edgecolor of each vertices with possibly various 
colours (one petal is blue, the other is orange). How should I proceed?

A naive way forward is to do something like (for a double petal, the 
left one not being filled up, the right one being filled, see the 
definition for verts1, verts2, verts3, verts4 below):

## Code
x = rand(10)
y = rand(10)
verts = [verts1, verts2, verts3, verts4]
fc = ['k', 'None', 'None', 'None']
ec = ['b', 'orange', 'k', 'k']

for lverts, lfc, lec in list(zip(verts, fc, ec)) :
      scatter(x, y, marker= (lverts, 0), facecolor=lfc, edgecolor=lec, 
s=1000, label='My symbol')

==> HOWEVER, since these are done in a for loop, it is not considered as 
a single marker when I do, for example, :

legend(loc=0)

QUESTION: how should I manage this? (couldn't find the answer on the net)

Suggestion are most welcome!

Thanks!
Eric
======================================
###### Definition for the vertices
if 1:
     # verts1:
     size, angrad = 10., 0.
     rx = 4. * size
     theta = np.linspace(-pi / 4., pi / 4., 151)
     x = rx*np.sqrt(cos(2.*theta))*cos(theta)
     y = rx*np.sqrt(cos(2.*theta))*sin(theta)
     rotx = x * cos(angrad) + y * sin(angrad)
     roty = -x * sin(angrad) + y * cos(angrad)
     verts1 = list(zip(rotx,roty))

     # verts2:
     size, angrad = 10.,  np.pi
     rx = 4. * size
     theta = np.linspace(-pi / 4., pi / 4., 151)
     x = rx*np.sqrt(cos(2.*theta))*cos(theta)
     y = rx*np.sqrt(cos(2.*theta))*sin(theta)
     rotx = x * cos(angrad) + y * sin(angrad)
     roty = -x * sin(angrad) + y * cos(angrad)
     verts2 = list(zip(rotx,roty))

     # verts3
     verts3 = list(zip([0.,0.],[0,0.1]))

     # verts4
     verts4 = list(zip([0.,0.],[-0.1,-0.03]))