430.sagews

import urllib
from xml.dom import minidom

# - hash is a comment
# there are other xml data files to be found at http://dev.electrostallion.com/archive/wave_data/
#

#doc = '2009-03-19_114057.xml'
#doc = '2009-03-19_110401.xml'
#doc = '2009-03-19_132739.xml'
doc = '2009-04-09_125542.xml'
url = 'http://dev.electrostallion.com/archive/wave_data/' + doc
xml_data = minidom.parse(urllib.urlopen(url))
    
S = [] 

arraysFound = 0

for a in xml_data.childNodes:
    
     for b in a.childNodes:  
        if b.nodeName == "dict":
            for c in b.childNodes:
                if c.nodeName == "array": 
                    if arraysFound == 2:
                        for d in c.childNodes:
                            if d.nodeName == "array": 
                                x = float(d.childNodes[1].firstChild.data)
                                y = float(d.childNodes[3].firstChild.data)
                                S.append((x,y)) 
                    else:
                        arraysFound = arraysFound + 1

Sp = list_plot(S,rgbcolor=(.5,.5,.5)) 


show (Sp, figsize=[25,5])