def pixels_to_figcoords(
length_pixels: float,
trans: Transform,
direction: str = "both") -> Union[float, Tuple[float, float]]:
"""
Convert a length in display coordinates to a length in data or axes
coordinates.
:param length_pixels: A absolute size, in display coordinates (i.e.
pixels).
:param trans: Coordinate system to transform to. Examples: `ax.transAxes`,
`ax.transData`, `ax.get_xaxis_transform()`, and
`ax.get_yaxis_transform()`.
:param direction: Which dimension to return. 'h' for horizontal (x), 'v' for
vertical (y), or 'both' for both.
:return: Length in `trans` coordinates. A tuple when orient="both". A
scalar otherwise.
"""
# Get the origin in display coordinates (i.e. pixels):
origin = trans.transform([0, 0])
# Transform display coordinates to data or axes coordinates:
x, y = trans.inverted().transform(origin + length_pixels)
if direction == "h":
return x
elif direction == "v":
return y
elif direction == "both":
return x, y
def transform(self, lat):
try:
return Transform.transform(self, lat)
except NotImplementedError:
return self.transform_non_affine(lat)
