nicholas@872: import xml.etree.ElementTree as ET
nicholas@872: import os
nicholas@872: import matplotlib.pyplot as plt
nicholas@872: 
nicholas@872: colormap = ['b', 'r', 'g', 'c', 'm', 'y', 'k'] # colormap for to cycle through
nicholas@872: 
nicholas@872: timeline_folder = 'timelines/' # folder where to store timelines, e.g. 'timelines/'
nicholas@872: 
nicholas@872: 
nicholas@872: # create timeline_folder if not yet created
nicholas@872: if not os.path.exists(timeline_folder):
nicholas@872:     os.makedirs(timeline_folder)
nicholas@872: 
nicholas@872: # get every XML file in folder
nicholas@872: for file in os.listdir("."): # You have to put this script in folder where output XML files are.
nicholas@872:     if file.endswith(".xml"):
nicholas@872:         tree = ET.parse(file)
nicholas@872:         root = tree.getroot()
nicholas@872:         subject_id = file[:-4] # drop '.xml'
nicholas@872:         
nicholas@872:         # ONE TIMELINE PER PAGE - make new plot per page
nicholas@872: 
nicholas@872:         # get list of all page names
nicholas@872:         for audioholder in root.findall("./audioholder"):   # iterate over pages
nicholas@872:             page_name = audioholder.get('id')               # get page name
nicholas@872:             
nicholas@872:             if page_name is None: # ignore 'empty' audio_holders
nicholas@872:                 break
nicholas@872: 
nicholas@872:             # SORT AUDIO ELEMENTS ALPHABETICALLY
nicholas@872:             audioelements = root.findall("*/[@id='"+page_name+"']/audioelement")
nicholas@872:             
nicholas@872:             data = []
nicholas@872:             for elem in audioelements: # from http://effbot.org/zone/element-sort.htm
nicholas@872:                 key = elem.get("id")
nicholas@872:                 data.append((key, elem))
nicholas@872:             data.sort()
nicholas@872:             
nicholas@872:             N_audioelements = len(audioelements) # number of audio elements for this page
nicholas@872:             increment = 0 # increased for every new audioelement
nicholas@872:             audioelements_names = [] # store names of audioelements
nicholas@872:             
nicholas@872:             # for page [page_name], print comments related to fragment [id]
nicholas@872:             for tuple in data:
nicholas@872:             	audioelement = tuple[1]
nicholas@872:                 if audioelement is not None: # Check it exists
nicholas@872:                     audio_id = str(audioelement.get('id'))
nicholas@872:                     audioelements_names.append(audio_id)
nicholas@872:                     
nicholas@872:                     # for this audioelement, loop over all listen events
nicholas@872:                     listen_events = root.findall("*/[@id='"
nicholas@872:                                            + page_name
nicholas@872:                                            + "']/audioelement/[@id='"
nicholas@872:                                            + audio_id
nicholas@872:                                            + "']/metric/metricresult/[@name='elementListenTracker']/event")
nicholas@872:                     for event in listen_events:
nicholas@872:                         # get testtime: start and stop
nicholas@872:                         start_time = event.find('testtime').get('start')
nicholas@872:                         stop_time  = event.find('testtime').get('stop')
nicholas@872:                         # event lines:
nicholas@872:                         plt.plot([start_time, start_time], # x-values
nicholas@872:                             [0, N_audioelements+1], # y-values
nicholas@872:                             color='k'
nicholas@872:                             )
nicholas@872:                         plt.plot([stop_time, stop_time], # x-values
nicholas@872:                             [0, N_audioelements+1], # y-values
nicholas@872:                             color='k'
nicholas@872:                             )
nicholas@872:                         # plot time: 
nicholas@872:                         plt.plot([start_time, stop_time], # x-values
nicholas@872:                             [N_audioelements-increment, N_audioelements-increment], # y-values
nicholas@872:                             color=colormap[increment%len(colormap)],
nicholas@872:                             linewidth=6
nicholas@872:                             )
nicholas@872:                         
nicholas@872:                 increment+=1
nicholas@872:                                            
nicholas@872:             #TODO: if 'nonsensical' or unknown: dashed line until next event
nicholas@872:             #TODO: Vertical lines for fragment looping point
nicholas@872:             
nicholas@872:             plt.title('Timeline ' + file) #TODO add song too
nicholas@872:             plt.xlabel('Time [seconds]')
nicholas@872:             plt.ylabel('Fragment')
nicholas@872:             plt.ylim(0, N_audioelements+1)
nicholas@872:             
nicholas@872:             #y-ticks: fragment IDs, top to bottom
nicholas@872:             plt.yticks(range(N_audioelements, 0, -1), audioelements_names) # show fragment names
nicholas@872: 
nicholas@872: 
nicholas@872:             #plt.show() # uncomment to show plot; comment when just saving
nicholas@872:             #exit()
nicholas@872:             
nicholas@872:             plt.savefig(timeline_folder+subject_id+"-"+page_name+".png")
nicholas@872:             plt.close()