# plot_curve¶

menpo.visualize.plot_curve(x_axis, y_axis, figure_id=None, new_figure=True, legend_entries=None, title='', x_label='', y_label='', axes_x_limits=0.0, axes_y_limits=None, axes_x_ticks=None, axes_y_ticks=None, render_lines=True, line_colour=None, line_style='-', line_width=1, render_markers=True, marker_style='o', marker_size=5, marker_face_colour=None, marker_edge_colour='k', marker_edge_width=1.0, render_legend=True, legend_title='', legend_font_name='sans-serif', legend_font_style='normal', legend_font_size=10, legend_font_weight='normal', legend_marker_scale=None, legend_location=2, legend_bbox_to_anchor=(1.05, 1.0), legend_border_axes_pad=None, legend_n_columns=1, legend_horizontal_spacing=None, legend_vertical_spacing=None, legend_border=True, legend_border_padding=None, legend_shadow=False, legend_rounded_corners=False, render_axes=True, axes_font_name='sans-serif', axes_font_size=10, axes_font_style='normal', axes_font_weight='normal', figure_size=(7, 7), render_grid=True, grid_line_style='--', grid_line_width=1)[source]

Plot a single or multiple curves on the same figure.

Parameters:
• x_axis (list or array) – The values of the horizontal axis. They are common for all curves.
• y_axis (list of lists or arrays) – A list with lists or arrays with the values of the vertical axis for each curve.
• figure_id (object, optional) – The id of the figure to be used.
• new_figure (bool, optional) – If True, a new figure is created.
• legend_entries (list of str or None, optional) – If list of str, it must have the same length as errors list and each str will be used to name each curve. If None, the CED curves will be named as ‘Curve %d’.
• title (str, optional) – The figure’s title.
• x_label (str, optional) – The label of the horizontal axis.
• y_label (str, optional) – The label of the vertical axis.
• axes_x_limits (float or (float, float) or None, optional) – The limits of the x axis. If float, then it sets padding on the right and left of the graph as a percentage of the curves’ width. If tuple or list, then it defines the axis limits. If None, then the limits are set automatically.
• axes_y_limits (float or (float, float) or None, optional) – The limits of the y axis. If float, then it sets padding on the top and bottom of the graph as a percentage of the curves’ height. If tuple or list, then it defines the axis limits. If None, then the limits are set automatically.
• axes_x_ticks (list or tuple or None, optional) – The ticks of the x axis.
• axes_y_ticks (list or tuple or None, optional) – The ticks of the y axis.
• render_lines (bool or list of bool, optional) – If True, the line will be rendered. If bool, this value will be used for all curves. If list, a value must be specified for each curve, thus it must have the same length as y_axis.
• line_colour (colour or list of colour or None, optional) –

The colour of the lines. If not a list, this value will be used for all curves. If list, a value must be specified for each curve, thus it must have the same length as y_axis. If None, the colours will be linearly sampled from jet colormap. Example colour options are

{'r', 'g', 'b', 'c', 'm', 'k', 'w'}
or
(3, ) ndarray

• line_style ({'-', '--', '-.', ':'} or list of those, optional) – The style of the lines. If not a list, this value will be used for all curves. If list, a value must be specified for each curve, thus it must have the same length as y_axis.
• line_width (float or list of float, optional) – The width of the lines. If float, this value will be used for all curves. If list, a value must be specified for each curve, thus it must have the same length as y_axis.
• render_markers (bool or list of bool, optional) – If True, the markers will be rendered. If bool, this value will be used for all curves. If list, a value must be specified for each curve, thus it must have the same length as y_axis.
• marker_style (marker or list of markers, optional) –

The style of the markers. If not a list, this value will be used for all curves. If list, a value must be specified for each curve, thus it must have the same length as y_axis. Example marker options

{'.', ',', 'o', 'v', '^', '<', '>', '+', 'x', 'D', 'd', 's',
'p', '*', 'h', 'H', '1', '2', '3', '4', '8'}

• marker_size (int or list of int, optional) – The size of the markers in points. If int, this value will be used for all curves. If list, a value must be specified for each curve, thus it must have the same length as y_axis.
• marker_face_colour (colour or list of colour or None, optional) –

The face (filling) colour of the markers. If not a list, this value will be used for all curves. If list, a value must be specified for each curve, thus it must have the same length as y_axis. If None, the colours will be linearly sampled from jet colormap. Example colour options are

{'r', 'g', 'b', 'c', 'm', 'k', 'w'}
or
(3, ) ndarray

• marker_edge_colour (colour or list of colour or None, optional) –

The edge colour of the markers. If not a list, this value will be used for all curves. If list, a value must be specified for each curve, thus it must have the same length as y_axis. If None, the colours will be linearly sampled from jet colormap. Example colour options are

{'r', 'g', 'b', 'c', 'm', 'k', 'w'}
or
(3, ) ndarray

• marker_edge_width (float or list of float, optional) – The width of the markers’ edge. If float, this value will be used for all curves. If list, a value must be specified for each curve, thus it must have the same length as y_axis.
• render_legend (bool, optional) – If True, the legend will be rendered.
• legend_title (str, optional) – The title of the legend.
• legend_font_name (See below, optional) –

The font of the legend. Example options

{'serif', 'sans-serif', 'cursive', 'fantasy', 'monospace'}

• legend_font_style ({'normal', 'italic', 'oblique'}, optional) – The font style of the legend.
• legend_font_size (int, optional) – The font size of the legend.
• legend_font_weight (See below, optional) –

The font weight of the legend. Example options

{'ultralight', 'light', 'normal', 'regular', 'book', 'medium',
'roman', 'semibold', 'demibold', 'demi', 'bold', 'heavy',
'extra bold', 'black'}

• legend_marker_scale (float, optional) – The relative size of the legend markers with respect to the original
• legend_location (int, optional) –

The location of the legend. The predefined values are:

 ‘best’ 0 ‘upper right’ 1 ‘upper left’ 2 ‘lower left’ 3 ‘lower right’ 4 ‘right’ 5 ‘center left’ 6 ‘center right’ 7 ‘lower center’ 8 ‘upper center’ 9 ‘center’ 10
• legend_bbox_to_anchor ((float, float), optional) – The bbox that the legend will be anchored.
• legend_border_axes_pad (float, optional) – The pad between the axes and legend border.
• legend_n_columns (int, optional) – The number of the legend’s columns.
• legend_horizontal_spacing (float, optional) – The spacing between the columns.
• legend_vertical_spacing (float, optional) – The vertical space between the legend entries.
• legend_border (bool, optional) – If True, a frame will be drawn around the legend.
• legend_border_padding (float, optional) – The fractional whitespace inside the legend border.
• legend_shadow (bool, optional) – If True, a shadow will be drawn behind legend.
• legend_rounded_corners (bool, optional) – If True, the frame’s corners will be rounded (fancybox).
• render_axes (bool, optional) – If True, the axes will be rendered.
• axes_font_name (See below, optional) –

The font of the axes. Example options

{'serif', 'sans-serif', 'cursive', 'fantasy', 'monospace'}

• axes_font_size (int, optional) – The font size of the axes.
• axes_font_style ({'normal', 'italic', 'oblique'}, optional) – The font style of the axes.
• axes_font_weight (See below, optional) –

The font weight of the axes. Example options

{'ultralight', 'light', 'normal', 'regular', 'book', 'medium',
'roman', 'semibold', 'demibold', 'demi', 'bold', 'heavy',
'extra bold', 'black'}

• figure_size ((float, float) or None, optional) – The size of the figure in inches.
• render_grid (bool, optional) – If True, the grid will be rendered.
• grid_line_style ({'-', '--', '-.', ':'}, optional) – The style of the grid lines.
• grid_line_width (float, optional) – The width of the grid lines.
Raises:

ValueError – legend_entries list has different length than y_axis list

Returns:

viewer (GraphPlotter`) – The viewer object.