Mercurial > hg > numerics

annotate numerics/bar.py @ 142:6747ce2bb090

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more stubbing; almost there
author Jeff Hammel <k0scist@gmail.com>
date Mon, 30 Mar 2015 12:43:36 -0700
parents 310290f95787
children 3ca7289b09d9
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1 #!/usr/bin/env python
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2 # -*- coding: utf-8 -*-
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3
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4 """
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5 bar charts using bokeh
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6
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7 See:
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8 - http://bokeh.pydata.org/tutorial/solutions/gallery/olympics.html
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9 - http://bokeh.pydata.org/en/latest/tutorial/topical.html
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10 - https://gist.github.com/mbostock/7322386
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11 """
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12
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13 # imports
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14 import argparse
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15 import os
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16 import sys
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17 import tempita
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18 from .manipulate import ManipulationParser
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19 from collections import OrderedDict
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20
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21 __all__ = ['bar_chart', 'BarChartParser', 'main']
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22
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23 # template info
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24 # TODO: own module
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25 here = os.path.dirname(os.path.abspath(__file__))
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26 templates = os.path.join(here, 'templates')
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27 bar_template = os.path.join(here, 'bar.d3.html')
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28 with open(os.path.join(here, 'javascript', 'd3.v3.min.js')) as f:
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29 d3 = f.read()
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30
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31
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32 def bar_chart(data, output, title=None):
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33 """
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34 create a bar chart
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35
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36 See:
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37 - http://bokeh.pydata.org/en/latest/tutorial/solutions/gallery/olympics.html
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38 """
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39 # TODO: abstract this to a plot class
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40
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41 template = tempita.Template.from_filename(bar_template)
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42 bar_chart = template.substitute(title=title or '',
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43 d3=d3,
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44 data=data)
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45
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46 class BarChartParser(ManipulationParser):
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47 """command line options parser for bar charts"""
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48 # TODO: upstream to PlotParser
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49
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50 def __init__(self, **kwargs):
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51 kwargs.setdefault('description', __doc__)
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52 ManipulationParser.__init__(self, **kwargs)
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53 self.add_argument('-t', '--title', dest='title',
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54 help="plot title")
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55
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56 def plot_filename(self):
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57 """determine the plot filename"""
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58 # this is a STUB
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59 # in reality, this should come from -o, --output
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60 # if applicable, or, should be determined from
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61 # the plot --title, or should be eg
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62 # '20150315203424.html'
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63 # we are doing this right nowe to work around the fact
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64 # that bokeh, in particular, will just cry if you
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65 # don't set this
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66 return 'foo.html'
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69 def main(args=sys.argv[1:]):
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70 """CLI"""
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71
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72 # parse command line
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73 parser = BarChartParser()
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74 options = parser.parse_args(args)
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75
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76 # process data
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77 data = parser.typed_data()
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78
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79 # ensure a mapping is given
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80 if len(data) != 1:
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81 raise NotImplementedError("TODO")
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82 else:
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83 data = data[0]
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85 # generate bar chart
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86 bar_chart(data, parser.plot_filename(), title=options.title)
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88
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89 if __name__ == '__main__':
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90 main()