Re: [Matplotlib-users] Happy Valentine's Day

[Apostolis G. <apo...@gm...>]

Amazing...
Great work!


2014-02-15 0:13 GMT+02:00 Benjamin Root <ben...@ou...>:

> I rolled a 20 today for necromancer, so I am going to do a thread
> resurrection.  Given recent improvements in matplotlib, we should
> definitely make this web-enabled. That way, we can share our nerdiness with
> our non-nerdy significant others.
>
> Happy Valentine's day!
> Ben
>
> On Mon, Feb 14, 2011 at 8:25 PM, Paul Ivanov <piv...@gm...> wrote:
>
>> jules hummon, on 2011-02-14 07:23,  wrote:
>> > Feel free to 'save and run', pass along, or ignore.
>> > This was my valentine's day present today.
>>
>> Thank you for sharing! I took the liberty of livening it up for
>> my sweetheart.
>>
>> #---------------------------------------------------
>> # hohumheartbeat.py - a more lively hohumheart.py ;)
>>
>> import numpy as np
>> import matplotlib as mpl
>> import matplotlib.pyplot as plt
>> from matplotlib.patches import Polygon
>>
>> # force square figure and square axes looks better for polar, IMO
>> width, height = mpl.rcParams['figure.figsize']
>> size = min(width, height)
>> # make a square figure
>> fig = plt.figure(figsize=(size, size))
>> ax = fig.add_axes([0.1, 0.1, 0.8, 0.8], polar=True, axisbg='#ffffff')
>> ax2 = fig.add_axes([0.45, .9, 0.1, 0.1], polar=True, axisbg='#ffffff')
>>
>> ax.set_rmax(2.0)
>> ax2.set_rmax(4.0)
>> ax2.spines['polar'].set_visible(False)
>> ax2.patch.set_alpha(.3)
>> for a in ax,ax2:
>>   a.set_xticks([])
>>   a.set_yticks([])
>>   ax.grid(False)
>>
>> theta = np.linspace(0,1,100)*np.pi*2
>> r = 1*(1-np.cos(theta))
>>
>> ncards = 5
>> step = 2*np.pi/ncards
>> pdict = dict(fc='r',ec='k', alpha=.5)
>> for ii in range(ncards):
>>     tr = np.column_stack((theta+ii*step, r))
>>     ax.add_patch(Polygon(tr, **pdict))
>>
>> # from WolframMath "Heart Curve"
>> r2 = 2 - 2*np.sin(theta)
>> r2 += np.sin(theta) * np.sqrt(np.abs(np.cos(theta))) / (np.sin(theta)+1.4)
>>
>> tr2 = np.column_stack((theta, r2))
>> ax2.add_patch(Polygon(tr2,**pdict)) # heart
>>
>> kwargs = dict(transform=ax2.transAxes, va='center', fontsize=20)
>> ax2.text(0,.45,"I",ha='right',**kwargs)
>> ax2.text(1,.4,"you",ha='left',**kwargs)
>>
>> beat =  np.tan(np.linspace(0, np.pi*2, 100))
>> beat[0:20] = beat[60:80]
>> beat[-20:] = beat[20:40]
>> beat -= beat.min()
>> beat /= beat.max()
>>
>> i=0; beatlen = len(beat)-1;
>> def heartbeat(e):
>>     global i;
>>     i = (i+1) % (beatlen)
>>     y = beat[i]
>>     ax2.set_rmax(y*4. + 4.)
>>     ax2.draw(ax.figure.canvas.get_renderer())
>>     ax2.figure.canvas.blit(ax2.bbox)
>>     #plt.draw()  #use if the last two lines cause trouble
>>
>> # even your mouse movements make my heart skip a bit!
>> cid = ax.figure.canvas.mpl_connect('idle_event', heartbeat)
>>
>> print "ax.figure.canvas.mpl_disconnect(%d)" %cid
>> print "#run the line above to 'flatline' (stop heartbeat)"
>> plt.show()
>>
>> best,
>> --
>> Paul Ivanov
>> 314 address only used for lists,  off-list direct email at:
>> http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7
>>
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>>
>>
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>
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