Reference: Graphs and Charts
Axes, grids, curves, charts, networks.
Axes and grids
See Graphs for a guide.
Axes(x_range=None, y_range=None, x_length=None, y_length=None, axis_config=None, x_axis_config=None, y_axis_config=None, tips=True): An x and a y axis with ticks; 12 by 6 units unless you givex_lengthandy_length..x_axis: The x axis on its own..y_axis: The y axis on its own..get_axes(): Both axes, as a group..coords_to_point(*coords)(also.c2p): The place in the picture of the graph point(x, y)..plot(function, x_range=None, color=None)(also.get_graph): A curve of a Python functionf(x)across the x range (orx_range)..plot_parametric_curve(function, t_range=(0, 1), color=YELLOW): A curve from a function oftthat returns a point..input_to_graph_point(x, graph)(also.i2gp): The point on a curve abovex..get_graph_label(graph, label="f(x)", x_val=None, direction=RIGHT, buff=MED_SMALL_BUFF, color=None, dot=False, dot_config=None): A label beside a curve, atx_val..get_x_axis_label(label, edge=UR, direction=UR, buff=SMALL_BUFF): A label at the end of the x axis..get_y_axis_label(label, edge=UR, direction=UR, buff=SMALL_BUFF): A label at the top of the y axis..get_axis_labels(x_label="x", y_label="y"): Labels for both axes..add_coordinates(*axes_numbers, num_decimal_places=None): Writes the numbers along both axes..get_area(graph, x_range=None, color=(BLUE, GREEN), opacity=0.3, bounded_graph=None): The shaded area under a curve (or between two), overx_range..get_riemann_rectangles(graph, x_range=None, dx=0.1, input_sample_type="left", stroke_width=1, stroke_color=BLACK, fill_opacity=1, color=(BLUE, GREEN), show_signed_area=True, bounded_graph=None, blend=False, width_scale_factor=1.001): Rectangles under a curve, as in a Riemann sum..get_vertical_line(point, line_config=None, line_func=None): A dashed line from a point down to the x axis..get_horizontal_line(point, line_config=None, line_func=None): A dashed line from a point across to the y axis..get_T_label(x_val, graph, label=None, label_color=None, triangle_size=MED_SMALL_BUFF, triangle_color=WHITE, line_func=None, line_color=YELLOW): A triangle marker and label on the x axis under a curve point..get_secant_slope_group(x, graph, dx=None, dx_line_color=YELLOW, dy_line_color=None, dx_label=None, dy_label=None, include_secant_line=True, secant_line_color=GREEN, secant_line_length=10): The secant betweenxandx + dxon a curve, with the dx and dy lines.
NumberLine(x_range=None, length=None, unit_size=1, include_numbers=False, include_tip=False): A line with ticks;include_numbers=Truewrites the numbers..number_to_point(number)(also.n2p): The place in the picture of a number on the line.
NumberPlane(x_range=None, y_range=None, x_length=None, y_length=None, background_line_style=None): A grid covering the picture, with axes.ComplexPlane(x_range=None, y_range=None, x_length=None, y_length=None, background_line_style=None): ANumberPlanefor complex numbers..number_to_point(number)(also.n2p): The place of a complex number such as2 + 1j.
PolarPlane(radius_max=None, size=None, radius_step=1, azimuth_step=None, azimuth_units="PI radians", azimuth_compact_fraction=True, azimuth_offset=0, azimuth_direction="CCW", azimuth_label_buff=SMALL_BUFF, azimuth_label_font_size=24, radius_config=None, background_line_style=None, faded_line_style=None, faded_line_ratio=1): A grid of circles and spokes..polar_to_point(radius, azimuth)(also.pr2pt): The place of a point given by radius and angle.
ThreeDAxes(x_range=None, y_range=None, z_range=None, x_length=None, y_length=None, z_length=None): Accepted so 3D scripts run; shown as flat axes.
from pymations import *
ax = Axes(x_range=[0, 5, 1], y_range=[0, 25, 5], x_length=8, y_length=5)
curve = ax.plot(lambda x: x ** 2, color=BLUE)
area = ax.get_area(curve, x_range=[1, 3], color=BLUE, opacity=0.4)
play(Create(ax), Create(curve))
play(FadeIn(area))
Curves without axes
ParametricFunction(function, t_range=(0, 1), color=YELLOW): A curve from a function oftthat returns a point.FunctionGraph(function, x_range=None, color=YELLOW): A curve ofy = f(x)without axes.
Charts
BarChart(values, bar_names=None, y_range=None, x_length=None, y_length=None, bar_colors=("#003f5c", "#58508d", "#bc5090", "#ff6361", "#ffa600"), bar_width=0.6, bar_fill_opacity=0.7, bar_stroke_width=3): Axes with a bar for each value..bars: The bars, as a group..get_bar_labels(color=None, font_size=24, buff=MED_SMALL_BUFF, label_constructor=None): The values written above the bars..change_bar_values(values, update_colors=True): Sets new bar heights (with.animate, they grow and shrink).
from pymations import *
chart = BarChart([3, 5, 2, 6], bar_names=["A", "B", "C", "D"], y_range=[0, 8, 2])
play(Create(chart))
play(chart.animate.change_bar_values([5, 2, 6, 3]))
Networks
Graph(vertices, edges, labels=False, label_fill_color=BLACK, layout="spring", layout_scale=2, layout_config=None, vertex_type=None, vertex_config=None, vertex_mobjects=None, edge_type=None, partitions=None, root_vertex=None, edge_config=None): A network of dots (vertices) joined by lines (edges).DiGraph(vertices, edges, labels=False, label_fill_color=BLACK, layout="spring", layout_scale=2, layout_config=None, vertex_type=None, vertex_config=None, vertex_mobjects=None, edge_type=None, partitions=None, root_vertex=None, edge_config=None): A network whose edges are arrows.GenericGraph(vertices, edges, labels=False, label_fill_color=BLACK, layout="spring", layout_scale=2, layout_config=None, vertex_type=None, vertex_config=None, vertex_mobjects=None, edge_type=None, partitions=None, root_vertex=None, edge_config=None): The shared base ofGraphandDiGraph; use those..change_layout(layout="spring", layout_scale=2, layout_config=None, root_vertex=None): Lays the network out another way ("circular","spring","tree"…).
from pymations import *
g = Graph([1, 2, 3, 4], [(1, 2), (2, 3), (3, 4), (4, 1)], layout="circular", labels=True)
play(Create(g))