pyvista.Plotter.add_legend_scale#

Plotter.add_legend_scale( corner_offset_factor=2.0, bottom_border_offset=30, top_border_offset=30, left_border_offset=30, right_border_offset=30, bottom_axis_visibility=True, top_axis_visibility=True, left_axis_visibility=True, right_axis_visibility=True, legend_visibility=True, xy_label_mode=False, render=True, color=None, font_size_factor=0.6, label_size_factor=1.0, label_format=None, number_minor_ticks=0, tick_length=5, minor_tick_length=3, show_ticks=True, tick_label_offset=2, )[source]#

Annotate the render window with scale and distance information.

Its basic goal is to provide an indication of the scale of the scene. Four axes surrounding the render window indicate (in a variety of ways) the scale of what the camera is viewing. An option also exists for displaying a scale legend.

Parameters:

corner_offset_factorfloat, default: 2.0: The corner offset value.
bottom_border_offsetint, default: 30: Bottom border offset. Recommended value 50.
top_border_offsetint, default: 30: Top border offset. Recommended value 50.
left_border_offsetint, default: 30: Left border offset. Recommended value 100.
right_border_offsetint, default: 30: Right border offset. Recommended value 100.
bottom_axis_visibilitybool, default: True: Whether the bottom axis is visible.
top_axis_visibilitybool, default: True: Whether the top axis is visible.
left_axis_visibilitybool, default: True: Whether the left axis is visible.
right_axis_visibilitybool, default: True: Whether the right axis is visible.
legend_visibilitybool, default: True: Whether the legend scale is visible.
xy_label_modebool, default: False: The axes can be programmed either to display distance scales or x-y coordinate values. By default, the scales display a distance. However, if you know that the view is down the z-axis, the scales can be programmed to display x-y coordinate values.
renderbool, default: True: Whether to render when the actor is added.
colorColorLike, optional: Either a string, rgb list, or hex color string for tick text and tick line colors.

Warning

The axis labels tend to be either white or black.
font_size_factorfloat, default: 0.6: Factor to scale font size overall.
label_size_factorfloat, default: 1.0: Factor to scale label size relative to title size.
label_formatstr, optional: A printf style format for labels, e.g. '%E'. See printf-style String Formatting.
number_minor_ticksint, default: 0: Number of minor ticks between major ticks.
tick_lengthint, default: 5: Length of ticks in pixels.
minor_tick_lengthint, default: 3: Length of minor ticks in pixels.
show_ticksbool, default: True: Whether to show the ticks.
tick_label_offsetint, default: 2: Offset between tick and label in pixels.

Returns:

vtk.vtkActor: The actor for the added vtkLegendScaleActor.

Warning

Please be aware that the axes and scale values are subject to perspective effects. The distances are computed in the focal plane of the camera. When there are large view angles (i.e., perspective projection), the computed distances may provide users the wrong sense of scale. These effects are not present when parallel projection is enabled.

Examples

>>> import pyvista as pv
>>> cone = pv.Cone(height=2.0, radius=0.5)
>>> pl = pv.Plotter()
>>> _ = pl.add_mesh(cone)
>>> _ = pl.add_legend_scale()
>>> pl.show()

Static Scene

../../../_images/pyvista-Plotter-add_legend_scale-1_00_00.png

Interactive Scene