Hi,
Beginning Python Visualization: Crafting Visual Transformation Scripts
by Shai Vaingast
http://www.amazon.com/Beginning-Python-Visualization-Transformation-Professionals/dp/1430218436/ref=sr_1_1?ie=UTF8&s=books&qid=1244158389&sr=8-1
Has anyone seen/read this book? I am looking for a good
hardcopy reference for matplotlib and associated tools.
While the gallery on the matplotlib site is a good way to learn, I
would like a reference guide that I could easily print out or
a tutorial of sorts, or possibly this book.
Thanks,
Esmail
ps: here's an example of the sort of thing I'd like to learn and
know about.
Someone recently generously shared this code with me on the python
list. While I have used pylab/matplotlib a bit, I didn't know about
ion() (line 12), nor am I sure about what is happening on line 19 and
21, does plot return a list? Why is it subscripted to? Hadn't seen
draw() before either, though I know show() .. these sort of things I
am curious to learn about before I see them in code for the first
time.
1 #!/usr/bin/env python
2
3 from pylab import *
4
5 # of elements
6 ELEMS = 250
7 # initial positions
8
9 x0 = rand(ELEMS)
10 y0 = rand(ELEMS)
11
12 ion() # interactive on
13
14 for t in linspace(0, 1, 100):
15 x = x0 + 0.1*cos(t)
16 y = y0 + 0.1*sin(t)
17
18 if t == 0: # first time calling
19 h = plot(x,y,'ro')
20 else:
21 h[0].set_data(x,y)
22
23 draw()
pps: I slightly reformatted/modified the original code.
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