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1. AndreasBugten

   added

   New feature

   on Jun 8, 2022
2. oscargus commented on Jun 8, 2022

   

   oscargus

   on Jun 8, 2022

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   Some parameters are dealt with here and a cycler is created which is used to loop over for each rectangle patch:
   

   matplotlib/lib/matplotlib/axes/_axes.py

   Lines 2381 to 2392 in 8e2987b

   	linewidth = itertools.cycle(np.atleast_1d(linewidth))
   	hatch = itertools.cycle(np.atleast_1d(hatch))
   	color = itertools.chain(itertools.cycle(mcolors.to_rgba_array(color)),
   	# Fallback if color == "none".
   	itertools.repeat('none'))
   	if edgecolor is None:
   	edgecolor = itertools.repeat(None)
   	else:
   	edgecolor = itertools.chain(
   	itertools.cycle(mcolors.to_rgba_array(edgecolor)),
   	# Fallback if edgecolor == "none".
   	itertools.repeat('none'))

   The remaining parameters are added to the rectangle patch here:
   

   matplotlib/lib/matplotlib/axes/_axes.py

   Line 2430 in 8e2987b

   r._internal_update(kwargs)

   I see two possible solutions:

   1. Create a cycler for the linestyles/dashpatterns.
   2. Add the remaining parameters to the BarCollection instead. (Not sure this works though.) It is a BarContainer, not a BarCollection.

   I'll take this into consideration in #23056 and see if something can be done to make simplify this procedure.
3. timhoffm commented on Jun 8, 2022

   

   timhoffm

   on Jun 8, 2022

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   I think it has been a design mistake that bar() can style individual bars separately. Conceptually, all bars from one call belong to one logical data set (which has multiple values). For example, one can only set one label.

   Therefore I suggest not to expand further in this direction. We generally don't want trivial vectorization on the methods as that increases implementation complexity.

   for x, y, color, linestyle in zip([1, 1.25, 1.5, 1.75], [2, 2, 2, 2], colors, linestyles):
       ax.bar(x, y, 0.05, color=color, linestyle=linestyle)
   

   seems simple enough.

   Reacted by Jody Klymak

   Reacted by Burlen Loring
4. timhoffm

   added

   status: won't or can't fix

   on Jul 6, 2022
5. timhoffm commented on Jul 6, 2022

   

   timhoffm

   on Jul 6, 2022

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   @AndreasBugten thanks for the suggestion. As laid out in the comment above, I don't want to expand the bar() API to style individual bars separately.
6. timhoffm

   closed this as completedon Jul 6, 2022