About linestyles: tuple not accepted in rc param file and other inconsistencies #11797
Comments
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Many cases (not all) were fixed by #15827. |
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To move forward or close this, it would be good to recreate the initial tables on what works and what not with the current version of matplotlib. I'm marking this as good first issue for recreating the tables. Further actions will need to be discussed on the result. |
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As good first issue: It would be good to recreate the initial tables on what works and what not with the current version of matplotlib. |
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I thought @oscargus looked into this wrt dashes and linestyles? |
This is related to #8040 and #9797, possibly #7219.
Bug report
Apart from strings like
"-","--",":", the linestyle can also be set as a tuple of an on/off sequence. There are however two different notations,(on, off, on, off, ...)and(start, (on, off, on, off, ...)).For all of the ways to set the linestyle, only one or none of those actually work.
Most importantly there is currently no way to set an on/off linestyle via the rc file.
The following lists those combinations and whether they work or not with the respective commands.
linestyle /dashes inside plot function
plt.plot([1,2], linestyle=":")plt.plot([1,2], linestyle=(5,1,1,1))plt.plot([1,2], linestyle=(0,(5,1,1,1)))plt.plot([1,2], dashes=":")plt.plot([1,2], dashes=(5,1,1,1))plt.plot([1,2], dashes=(0, (5,1,1,1)))using rcParams
plt.rcParams["grid.linestyle"] = ":"plt.rcParams["grid.linestyle"] = (5,1,1,1)plt.rcParams["grid.linestyle"] = (0,(5,1,1,1))inside cycler using rcParams
plt.rcParams["axes.prop_cycle"] += plt.cycler("linestyle", [":"])plt.rcParams["axes.prop_cycle"] += plt.cycler("linestyle", [(5,1,1,1)])plt.rcParams["axes.prop_cycle"] += plt.cycler("linestyle", [(0,(5,1,1,1))])using rc file
grid.linestyle : :grid.linestyle : (5,1,1,1)grid.linestyle : (0,(5,1,1,1))inside cycler using rc file
axes.prop_cycle : cycler("linestyle", [":"] )axes.prop_cycle : cycler("linestyle", [(5,1,1,1)] )axes.prop_cycle : cycler("linestyle", [(0,(5,1,1,1))] )Correlation
":"(5,1,1,1)(0,(5,1,1,1))plt.plot(..., linestyle=x)plt.plot(..., dashes=x)plt.rcParams["grid.linestyle"] = xplt.rcParams["axes.prop_cycle"] += plt.cycler("linestyle", [x])grid.linestyle : xaxes.prop_cycle : cycler("linestyle", [x] )I think the first thing to do here is to identify which combinations should actually work.
attn. @afvincent who has last worked on validation of linestyle rc Parameters.
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