| Category: Python / Data Visualization |
| Watchers: 12 |
| Star: 316 |
| Fork: 26 |
| Last update: Mar 16, 2023 |
Leather is the Python charting library for those who need charts now and don't care if they're perfect.
Leather isn't picky. It's rough. It gets dirty. It looks sexy just hanging on the back of a chair. Leather doesn't need your accessories. Leather is how Snake Plissken would make charts.
Get it?
Important links:
Quick attempt at grouped bars. It currently manually sets an Ordinal scale which isn't great. Let me know what you think/what I should change (and if you have suggestions for the scale). Adding tests soon.
Should be able to do stacked bars and grouped/stacked columns after this gets set.
I must admit that I'm confused, but I suspect that at least some other potential users would be similarly confused. So I think not addressing this more clearly may be a lapse in the documentation worthy of putting into an issue.
When running the first example at http://leather.readthedocs.io/en/latest/examples.html, everything seems to run properly, but nothing is displayed. And I can't find anything in the docs about how to make it display.
I'm on OS X 10.11.5, running Anaconda's Python 2.7.
Could you please clarify how to make it display? Or maybe, if the problem is just that Anaconda's Python won't work, you could give some clue about what Python distributions are OK?
When changing the columns example to only have values of 0 in the data set, leather throws the following exception:
Traceback (most recent call last):
File "/home/cryzed/Documents/Code/Sandbox/columns.py", line 12, in <module>
chart.to_svg('examples/charts/columns.svg')
File "/home/cryzed/.conda/envs/Sandbox3/lib/python3.5/site-packages/leather/chart.py", line 326, in to_svg
group = self.to_svg_group(width, height)
File "/home/cryzed/.conda/envs/Sandbox3/lib/python3.5/site-packages/leather/chart.py", line 281, in to_svg_group
axes_group.append(y_axis.to_svg(canvas_width, canvas_height, y_scale, 'left'))
File "/home/cryzed/.conda/envs/Sandbox3/lib/python3.5/site-packages/leather/axis.py", line 111, in to_svg
projected_value = scale.project(value, range_min, range_max)
File "/home/cryzed/.conda/envs/Sandbox3/lib/python3.5/site-packages/leather/scales/linear.py", line 23, in project
pos = float(value - self.min) / (self.max - self.min)
ZeroDivisionError: float division by zero
Not sure what the required version is, but pip install lxml worked fine.
After I pip install agate, when I import it, I get errors
[email protected](master):~$ python3
Python 3.6.9 (default, Apr 18 2020, 01:56:04)
[GCC 8.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import agate
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/username/.local/lib/python3.6/site-packages/agate/__init__.py", line 14, in <module>
from agate.table import Table # noqa
File "/home/username/.local/lib/python3.6/site-packages/agate/table/__init__.py", line 298, in <module>
from agate.table.bar_chart import bar_chart
File "/home/username/.local/lib/python3.6/site-packages/agate/table/bar_chart.py", line 4, in <module>
import leather
File "/home/username/.local/lib/python3.6/site-packages/leather/__init__.py", line 5, in <module>
from leather.chart import Chart
File "/home/username/.local/lib/python3.6/site-packages/leather/chart.py", line 11, in <module>
from leather.scales import Scale, Linear, Temporal
File "/home/username/.local/lib/python3.6/site-packages/leather/scales/__init__.py", line 3, in <module>
from leather.scales.base import Scale
File "/home/username/.local/lib/python3.6/site-packages/leather/scales/base.py", line 8, in <module>
from leather.shapes import Bars, Columns
File "/home/username/.local/lib/python3.6/site-packages/leather/shapes/__init__.py", line 4, in <module>
from leather.shapes.bars import Bars
File "/home/username/.local/lib/python3.6/site-packages/leather/shapes/bars.py", line 8, in <module>
from leather.series import CategorySeries
File "/home/username/.local/lib/python3.6/site-packages/leather/series/__init__.py", line 3, in <module>
from leather.series.base import Series, key_function
File "/home/username/.local/lib/python3.6/site-packages/leather/series/base.py", line 9, in <module>
from leather.utils import DIMENSION_NAMES, X, Y, Datum
File "/home/username/.local/lib/python3.6/site-packages/leather/utils.py", line 20, in <module>
ZERO = Decimal('0')
TypeError: argument must be a context
>>>
I'm apparently using agate 1.6.1 but there's no way to verify without importing the package.
What is the problem and how can I fix it?
Commit c3654820b386e53daab9ea53e43738579fb85f18 added a # of options for axis titles to theme.py. All of these options are used except for font_size. Similarly, all theme options for ticks are used except font_size.
This commit uses those properties.
To reproduce ...
import leather, math
leather.theme.title_font_size = 40
leather.theme.axis_title_font_size = 40
leather.theme.tick_font_size = 40
chart = leather.Chart("Title")
chart.add_line([(x, math.sin(x)) for x in range(-10,10)])
chart.add_x_axis(name="X Axis")
chart.add_y_axis(name="Y Axis")
print(chart.to_svg())
Before ...
After ... (all text is now the same size)
I use six.text_type instead of str to respect precedent but also keep 2/3 compatibility.
Hello,
Hello, I need a responsive SVG. To do this, remove width and height and add a viewBox. I haven't found a way to do this in the API, is this possible of native?
Examples: Non-Responsive https://jsfiddle.net/yuridarwin/ufmct14w/ Responsive https://jsfiddle.net/yuridarwin/3dev8psx/
if series.data_type(X) is not Number:
raise ValueError('Bars only support Number values for the Y axis.')
if series.data_type(Y) is not Text:
raise ValueError('Bars only support Text values for the X axis.')
If the Bars are rows of horizontal bars, then the checks are correct, but the error message saying Y should be X, and vice versa.
Thank you for the great charting library! One feature I needed was the ability to add dashed lines.
The parameter is stroke_dasharray https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stroke-dasharray. But I would be open to naming it something a little easier to understand instead like dashed=True and set a default (2%?). Let me know what you think!
Thank you, Nick
These lines are at issue:
warnings.resetwarnings()
warnings.simplefilter('always')
These sorts of lines are usually wrapped in with warnings.catch_warnings():
To reproduce in Python 2.7:
pip install virtualenvwrapper
python -c 'import leather; from pkg_resources import iter_entry_points'
See https://github.com/wireservice/csvkit/issues/788
I've run into this attempting to use dates or numbers for the X axis. I can work around it by computing a new column that turns a number or date value into a string ... but should that be necessary?
The error message:
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/Users/xxx/anaconda/lib/python3.5/site-packages/agate/table/bar_chart.py", line 41, in bar_chart
chart.add_bars(self, x=value, y=label)
File "/Users/xxx/anaconda/lib/python3.5/site-packages/leather/chart.py", line 148, in add_bars
Bars(fill_color)
File "/Users/xxx/anaconda/lib/python3.5/site-packages/leather/chart.py", line 130, in add_series
shape.validate_series(series)
File "/Users/xxx/anaconda/lib/python3.5/site-packages/leather/shapes/bars.py", line 36, in validate_series
raise ValueError('Bars only support Text values for the X axis.')
ValueError: Bars only support Text values for the X axis.
