- home :: github.com/feedreader/pluto
- bugs :: github.com/feedreader/pluto/issues
- gem :: rubygems.org/gems/barcharts
- rdoc :: rubydoc.info/gems/barcharts
- forum :: groups.google.com/group/wwwmake
Use the barchart method to print barcharts.
Let's use the
"Q: Where do Rubyists come from / What are the top countries for blogs?"
example from the Planet Ruby page:
require 'barcharts'
data = [
['Australia', 3],
['Austria', 1],
['Canada', 1],
['Croatia', 1],
['India', 1],
['Poland', 2],
['Spain', 1],
['Switzerland', 1],
['Ukraine', 1],
['United States', 6],
]
# -or-
data = {
'Australia': 3,
'Austria': 1,
'Canada': 1,
'Croatia': 1,
'India': 1,
'Poland': 2,
'Spain': 1,
'Switzerland': 1,
'Ukraine': 1,
'United States': 6,
}
puts barchart( data, title: 'Location', chars: '*' )Resulting in:
Location (n=18)
---------------------------------
Australia (16%) | ******** 3
Austria ( 5%) | ** 1
Canada ( 5%) | ** 1
Croatia ( 5%) | ** 1
India ( 5%) | ** 1
Poland (11%) | ***** 2
Spain ( 5%) | ** 1
Switzerland ( 5%) | ** 1
Ukraine ( 5%) | ** 1
United States (33%) | **************** 6
or using Unicode block elements:
puts barchart( data, title: 'Location', chars: '▏▎▍▋▊▉' )Resulting in:
Location (n=18)
---------------------------------
Australia (16%) | ▉▉▉▉▉▉▉▉▍ 3
Austria ( 5%) | ▉▉▊ 1
Canada ( 5%) | ▉▉▊ 1
Croatia ( 5%) | ▉▉▊ 1
India ( 5%) | ▉▉▊ 1
Poland (11%) | ▉▉▉▉▉▋ 2
Spain ( 5%) | ▉▉▊ 1
Switzerland ( 5%) | ▉▉▊ 1
Ukraine ( 5%) | ▉▉▊ 1
United States (33%) | ▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▊ 6
Aside: What are Unicode block elements?
Unicode among other block elements defines:
▏- U+258F - Left one eighth block▎- U+258E - Left one quarter block▍- U+258D - Left three eighths block▋- U+258B - Left five eighths block▊- U+258A - Left three quarters block▉- U+2589 - Left seven eighths block
See Block Elements @ Wikipedia for more.
Pass in sort: true to reverse sort the dataset (highest values first).
Let's use the
"Q: What (web site) publishing tools are in use?" example:
data = [
['Webgen', 1],
['Jekyll', 12],
['WordPress', 3],
['Hugo', 1],
['Ghost', 2],
['Transistor', 1],
['Simplecast', 1],
['?', 30],
]
puts barchart( data, title: 'Generators', sort: true )Resulting in:
Generators (n=51)
---------------------------------
? (58%) | ▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▍ 30
Jekyll (23%) | ▉▉▉▉▉▉▉▉▉▉▉▊ 12
WordPress ( 5%) | ▉▉▉ 3
Ghost ( 3%) | ▉▉ 2
Hugo ( 1%) | ▉ 1
Transistor ( 1%) | ▉ 1
Simplecast ( 1%) | ▉ 1
Webgen ( 1%) | ▉ 1
Pass in n: <sample size> to use a "custom" sample size
AND to turn off the auto-calculation of the
usage percentage.
Let's use the
"Q: What are the top topics / words in headlines?" example:
data = [
['rails', 13],
['ruby', 12],
['conferences', 6],
['dry', 5],
['rom', 4],
['ml', 2],
]
puts barchart( data, title: 'Top Words in Headlines 2020', n: 47)resulting in:
Top Words in Headlines 2020 (n=47)
---------------------------------
rails | ▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▍ 13
ruby | ▉▉▉▉▉▉▉▉▉▉▉▉▉▉▎ 12
conferences | ▉▉▉▉▉▉▉▏ 6
dry | ▉▉▉▉▉▉ 5
rom | ▉▉▉▉▊ 4
ml | ▉▉▍ 2
That's all for now.
The barcharts scripts are dedicated to the public domain.
Use it as you please with no restrictions whatsoever.
Send them along to the wwwmake Forum/Mailing List. Thanks!