# [Matplotlib-devel] 2017-02-13 phone call notes

Thomas Caswell tcaswell at gmail.com
Mon Feb 13 17:24:33 EST 2017

```Folks,

Continuing to experiment with exactly how to do these notes

Ryan May, Eric Firing, Thomas Caswell, Nelle Varoquaux

** [[mpl:8032]]

- Nelle suggests we replace dots with _actually_ dotted (round dots)
- Eric points out it was never super dotted

Conclusions:

- get rid of clipping
- make the 'dotted' pattern square
- adjust the rest of the patterns to scale for dropping clipping
- make sure all default patterns are commensurate (2 '--' to 4 ':' to 1
'-.')

- merge the loosening of the `grid.linestyle` rcparam to accept dash
patterns for 2.0.1
- merge the 'loose' version of patterns for 2.1
- can get 'true dotted' with =dash_capstyle = 'round'= + =[.000001, 1.5]=
as the dash pattern

** code for playing with dash patterns

#+BEGIN_SRC python
import matplotlib.pyplot as plt
from cycler import cycler
plt.ion()

fig, ax = plt.subplots()

patterns = cycler('dashes', [(1, 1), (1.1, 1.1), (1, 2), (1, 3)]) *
cycler('lw', [1, 1.5, 2, 3, 7, 10])
plt.rcParams['lines.dash_capstyle'] = 'butt'
for j, m in enumerate(patterns):
ax.plot([0, 1], [100 - j, 100 - j], **m, label=(str(m)))

ax.legend()
#+END_SRC

#+BEGIN_SRC python
import matplotlib.pyplot as plt
from cycler import cycler
plt.ion()

fig, ax = plt.subplots()

patterns = cycler('lw', [1, 1.5, 2, 3, 7, 10])  * cycler('linestyle',
['--', ':', '-.'])
plt.rcParams['lines.dash_capstyle'] = 'butt'
for j, m in enumerate(patterns):
ax.plot([0, 1], [100 - j, 100 - j], **m, label=(str(m)))

ax.legend()
#+END_SRC
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```