-
Notifications
You must be signed in to change notification settings - Fork 0
/
slideUtilities.py
executable file
·63 lines (51 loc) · 2 KB
/
slideUtilities.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
from IPython.display import display_html
from IPython.display import display
import matplotlib.pyplot as plt
from IPython.display import HTML
import binascii
import base64
def hide_code_in_slideshow():
import os
uid = binascii.hexlify(os.urandom(8)).decode('UTF-8')
html = """<div id="%s"></div>
<script type="text/javascript">
$(function(){
var p = $("#%s");
if (p.length==0) return;
while (!p.hasClass("cell")) {
p=p.parent();
if (p.prop("tagName") =="body") return;
}
var cell = p;
cell.find(".input").addClass("hide-in-slideshow")
});
</script>""" % (uid, uid)
display_html(html, raw=True)
return html
##########################
# python notebook does not support matplotlib animations
# so these functions create an .mp4 video and then display
# it using inline HTML
##########################
# Source: http://nbviewer.ipython.org/url/jakevdp.github.io/downloads/notebooks/AnimationEmbedding.ipynb
# updated to python3, now uses package base64 to do the encoding, reading comments from this post:
# http://jakevdp.github.io/blog/2013/05/12/embedding-matplotlib-animations/
from tempfile import NamedTemporaryFile
VIDEO_TAG = """<video controls>
<source src="data:video/x-m4v;base64,{0}" type="video/mp4">
Your browser does not support the video tag.
</video>"""
def anim_to_html(anim):
if not hasattr(anim, '_encoded_video'):
with NamedTemporaryFile(suffix='.mp4') as f:
anim.save(f.name, fps=20, extra_args=['-vcodec', 'libx264'])
video = open(f.name, "rb").read()
anim._encoded_video = base64.b64encode(video).decode('utf-8')
return VIDEO_TAG.format(anim._encoded_video)
def display_animation(anim):
# plt.close(anim._fig)
return HTML(anim_to_html(anim))
def display_saved_anim(fname):
with open(fname,'rb') as f:
video = f.read()
return HTML(VIDEO_TAG.format(base64.b64encode(video).decode('utf-8')))