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Added options for key width, chart width, and key justification. #9

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Added options for key width, chart width, and key justification. #9

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8aaabf5
Added options for key width, chart width, and key justification.
matthewlmcclure Sep 13, 2012
5cef97a
Computes value width instead of hard coding 6.
matthewlmcclure Sep 13, 2012
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15 changes: 12 additions & 3 deletions data_hacks/bar_chart.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,9 +45,10 @@ def run(input_stream, options):
sys.exit(1)

max_length = max([len(key) for key in data.keys()])
max_length = min(max_length, 50)
value_characters = 80 - max_length
max_length = min(max_length, options.key_length)
max_value = max(data.values())
max_value_length = len(str(max_value))
value_characters = options.width - max_length - max_value_length
scale = int(math.ceil(float(max_value) / value_characters))
scale = max(1, scale)

Expand All @@ -64,7 +65,9 @@ def run(input_stream, options):
data = [[key,value] for key,value in data.items()]
data.sort(reverse=options.reverse_sort)
data = [[value, key] for key,value in data]
format = "%" + str(max_length) + "s [%6d] %s"
justification = "-" if options.justification == "left" else ""
format = ("%" + justification + str(max_length) + "s [%" +
str(max_value_length) + "d] %s")
for value,key in data:
print format % (key[:max_length], value, (value / scale) * "*")

Expand All @@ -77,6 +80,12 @@ def run(input_stream, options):
help="sort by the frequence")
parser.add_option("-r", "--reverse-sort", dest="reverse_sort", default=False, action="store_true",
help="reverse the sort")
parser.add_option("-j", "--justification", dest="justification", default="right", action="store",
help="output justification of keys [right]")
parser.add_option("-l", "--key-length", dest="key_length", type="int", default=50, action="store",
help="output length of keys [50]")
parser.add_option("-w", "--width", dest="width", type="int", default=80, action="store",
help="output width of chart [80]")

(options, args) = parser.parse_args()

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