38 lines
1014 B
Python
Executable File
38 lines
1014 B
Python
Executable File
#!/usr/bin/env python2
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# -*- coding: UTF-8 -*-
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# File: plot_num_msg_by_time.py
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# Date: Fri Nov 21 15:19:00 2014 +0800
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# Author: Yuxin Wu <[email protected]>
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from lib.Parser import WeChatDBParser
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from lib.utils import ensure_unicode
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from datetime import timedelta
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import numpy as np
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import matplotlib.pyplot as plt
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import sys, os
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if len(sys.argv) != 3:
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sys.exit("Usage: {0} <path to decoded_database.db> <name>".format(sys.argv[0]))
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every_k_days = 2
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db_file = sys.argv[1]
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name = ensure_unicode(sys.argv[2])
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parser = WeChatDBParser(db_file)
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parser.parse()
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msgs = parser.msgs_by_talker[name]
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times = [x.createTime for x in msgs]
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start_time = times[0]
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diffs = [(x - start_time).days for x in times]
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max_day = diffs[-1]
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width = 30
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numbers = range((max_day / width + 1) * width + 1)[::width]
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labels = [(start_time + timedelta(x)).strftime("%m/%d") for x in numbers]
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plt.xticks(numbers, labels)
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plt.xlabel("Date")
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plt.ylabel("Number of msgs in k days")
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plt.hist(diffs, bins=max_day / every_k_days)
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plt.show()
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