8000 Allow separate config of minor grid params in matplotlibrc. by RJTK · Pull Request #26121 · matplotlib/matplotlib · GitHub
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Allow separate config of minor grid params in matplotlibrc. #26121

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Allow separate config of minor grid params in matplotlibrc. #26121

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13 changes: 9 additions & 4 deletions lib/matplotlib/axis.py
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Original file line number Diff line number Diff line change
Expand Up @@ -139,19 +139,24 @@ def __init__(
zorder = mlines.Line2D.zorder
self._zorder = zorder

if major:
grid_name = "grid"
else:
grid_name = "grid.minor"

if grid_color is None:
grid_color = mpl.rcParams["grid.color"]
grid_color = mpl.rcParams[f"{grid_name}.color"]
if grid_linestyle is None:
grid_linestyle = mpl.rcParams["grid.linestyle"]
grid_linestyle = mpl.rcParams[f"{grid_name}.linestyle"]
if grid_linewidth is None:
grid_linewidth = mpl.rcParams["grid.linewidth"]
grid_linewidth = mpl.rcParams[f"{grid_name}.linewidth"]
if grid_alpha is None and not mcolors._has_alpha_channel(grid_color):
# alpha precedence: kwarg > color alpha > rcParams['grid.alpha']
# Note: only resolve to rcParams if the color does not have alpha
# otherwise `grid(color=(1, 1, 1, 0.5))` would work like
# grid(color=(1, 1, 1, 0.5), alpha=rcParams['grid.alpha'])
# so the that the rcParams default would override color alpha.
grid_alpha = mpl.rcParams["grid.alpha"]
grid_alpha = mpl.rcParams[f"{grid_name}.alpha"]
grid_kw = {k[5:]: v for k, v in kwargs.items()}

self.tick1line = mlines.Line2D(
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4 changes: 4 additions & 0 deletions lib/matplotlib/mpl-data/matplotlibrc
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Expand Up @@ -523,6 +523,10 @@
#grid.linewidth: 0.8 # in points
#grid.alpha: 1.0 # transparency, between 0.0 and 1.0

#grid.minor.color: "#b0b0b0" # minor grid color
#grid.minor.linestyle: - # solid
#grid.minor.linewidth: 0.8 # in points
#grid.minor.alpha: 1.0 # transparency, between 0.0 and 1.0

## ***************************************************************************
## * LEGEND *
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5 changes: 5 additions & 0 deletions lib/matplotlib/rcsetup.py
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Expand Up @@ -1154,6 +1154,11 @@ def _convert_validator_spec(key, conv):
"grid.linewidth": validate_float, # in points
"grid.alpha": validate_float,

"grid.minor.color": validate_color, # minor grid color
"grid.minor.linestyle": _validate_linestyle, # solid
"grid.minor.linewidth": validate_float, # in points
"grid.minor.alpha": validate_float,

## figure props
# figure title
"figure.titlesize": validate_fontsize,
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