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A zero-dependency python package that prints basic charts to a Jupyter output
Charts supported:
Bar graphs can be drawn quickly with the bar
function:
from chart import bar
x = [500, 200, 900, 400]
y = ['marc', 'mummify', 'chart', 'sausagelink']
bar(x, y)
marc: ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
mummify: ▇▇▇▇▇▇▇
chart: ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
sausagelink: ▇▇▇▇▇▇▇▇▇▇▇▇▇
And the bar
function can accept columns from a pd.DataFrame
:
from chart import bar
import pandas as pd
df = pd.DataFrame({
'artist': ['Tame Impala', 'Childish Gambino', 'The Knocks'],
'listens': [8_456_831, 18_185_245, 2_556_448]
})
bar(df.listens, df.artist, width=20, label_width=11, mark='🔊')
Tame Impala: 🔊🔊🔊🔊🔊🔊🔊🔊🔊
Childish Ga: 🔊🔊🔊🔊🔊🔊🔊🔊🔊🔊🔊🔊🔊🔊🔊🔊🔊🔊🔊🔊
The Knocks: 🔊🔊🔊
Histograms are just as easy:
from chart import histogram
x = [1, 2, 4, 3, 3, 1, 7, 9, 9, 1, 3, 2, 1, 2]
histogram(x)
▇
▇
▇
▇
▇ ▇
▇ ▇
▇ ▇
▇ ▇ ▇
▇ ▇ ▇
▇ ▇ ▇ ▇
And they can accept objects created by scipy
:
from chart import histogram
import scipy.stats as stats
import numpy as np
np.random.seed(14)
n = stats.norm(loc=0, scale=10)
histogram(n.rvs(100), bins=14, height=7, mark='🍑')
🍑
🍑 🍑
🍑 🍑 🍑
🍑 🍑 🍑
🍑 🍑 🍑 🍑
🍑 🍑 🍑 🍑 🍑 🍑 🍑 🍑 🍑
🍑 🍑 🍑 🍑 🍑 🍑 🍑 🍑 🍑 🍑
Scatter plots can be drawn with a simple scatter
call:
from chart import scatter
x = range(0, 20)
y = range(0, 20)
scatter(x, y)
•
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•
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• •
•
• •
•
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•
And at this point you gotta know it works with any np.array
:
from chart import scatter
import numpy as np
np.random.seed(1)
N = 100
x = np.random.normal(100, 50, size=N)
y = x * -2 + 25 + np.random.normal(0, 25, size=N)
scatter(x, y, width=20, height=9, mark='^')
^^
^
^^^
^^^^^^^
^^^^^^
^^^^^^^
^^^^
^^^^^ ^
^^ ^
In fact, all chart
functions work with pandas, numpy, scipy and regular python objects.
In order to create the simple outputs generated by bar
, histogram
, and scatter
I had to create a couple of preprocessors, namely: NumberBinarizer
and RangeScaler
.
I tried to adhere to the scikit-learn API in their construction. Although you won't need them to use chart
here they are for your tinkering:
from chart.preprocessing import NumberBinarizer
nb = NumberBinarizer(bins=4)
x = range(10)
nb.fit(x)
nb.transform(x)
[0, 0, 0, 1, 1, 2, 2, 3, 3, 3]
from chart.preprocessing import RangeScaler
rs = RangeScaler(out_range=(0, 10), round=False)
x = range(50, 59)
rs.fit_transform(x)
[0.0, 1.25, 2.5, 3.75, 5.0, 6.25, 7.5, 8.75, 10.0]
pip install chart
For feature requests or bug reports, please use Github Issues
I wanted a super-light-weight library that would allow me to quickly grok data. Matplotlib had too many dependencies, and Altair seemed overkill. Though I really like the idea of termgraph, it didn't really fit well or integrate with my Jupyter workflow. Here's to chart
🥂 (still can't believe I got it on PyPI)
FAQs
chart
We found that chart demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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