Nov 16, 2023
diff --git a/lib/matplotlib/hatch.py b/lib/matplotlib/hatch.py
        self.shape_codes[0] = Path.MOVETO
        super().__init__(hatch, density)

 class DashedHatch(HatchPatternBase):
    def __init__(self, hatch, density):
        self.num_lines = int((hatch.count('_') + hatch.count('+')) * density)
        self.num_vertices = self.num_lines * 2

    def set_vertices_and_codes(self, vertices, codes):
        steps, stepsize = np.linspace(0.0, 1.0, self.num_lines, False,
                                      retstep=True)
        steps += stepsize / 2.
        vertices[0::2, 0] = steps
        vertices[0::2, 1] = 0.0
        vertices[1::2, 0] = steps
        vertices[1::2, 1] = 1.0
        codes[0::2] = Path.MOVETO
        codes[1::2] = Path.LINETO

 _hatch_types = [
    HorizontalHatch,
    VerticalHatch,
    SmallCircles,
    LargeCircles,
    SmallFilledCircles,
    Stars
    Stars,
    DashedHatch
    ]


 def _validate_hatch_pattern(hatch):
    valid_hatch_patterns = set(r'-+|/\xXoO.*')
    valid_hatch_patterns = set(r'-+|/\xXoO.*_')
    if hatch is not None:
        invalids = set(hatch).difference(valid_hatch_patterns)
        if invalids:
Original file line number	Diff line number	Diff line change
Expand Up		@@ -167,6 +167,22 @@ def __init__(self, hatch, density):
		self.shape_codes[0] = Path.MOVETO
		super().__init__(hatch, density)

		class DashedHatch(HatchPatternBase):
		def __init__(self, hatch, density):
		self.num_lines = int((hatch.count('_') + hatch.count('+')) * density)
		self.num_vertices = self.num_lines * 2

		def set_vertices_and_codes(self, vertices, codes):
		steps, stepsize = np.linspace(0.0, 1.0, self.num_lines, False,
		retstep=True)
		steps += stepsize / 2.
		vertices[0::2, 0] = steps
		vertices[0::2, 1] = 0.0
		vertices[1::2, 0] = steps
		vertices[1::2, 1] = 1.0
		codes[0::2] = Path.MOVETO
		codes[1::2] = Path.LINETO

		_hatch_types = [
		HorizontalHatch,
		VerticalHatch,
Expand All		@@ -175,12 +191,13 @@ def __init__(self, hatch, density):
		SmallCircles,
		LargeCircles,
		SmallFilledCircles,
		Stars
		Stars,
		DashedHatch
		]


		def _validate_hatch_pattern(hatch):
		valid_hatch_patterns = set(r'-+\|/\xXoO.*')
		valid_hatch_patterns = set(r'-+\|/\xXoO.*_')
		if hatch is not None:
		invalids = set(hatch).difference(valid_hatch_patterns)
		if invalids:
Expand Down