Bokeh - Speciapzed Curves

The bokeh.plotting API supports methods for rendering following speciapsed curves −

beizer()

This method adds a Bézier curve to the figure object. A Bézier curve is a parametric curve used in computer graphics. Other uses include the design of computer fonts and animation, user interface design and for smoothing cursor trajectory.

In vector graphics, Bézier curves are used to model smooth curves that can be scaled indefinitely. A "Path" is combination of pnked Bézier curves.

The beizer() method has following parameters which are defined −

Default value for all parameters is None.

Example

Following code generates a HTML page showing a Bézier curve and parabola in Bokeh plot −

x = 2
y = 4
xp02 = x+0.4
xp01 = x+0.1
xm01 = x-0.1
yp01 = y+0.2
ym01 = y-0.2
fig = figure(plot_width = 300, plot_height = 300)
fig.bezier(x0 = x, y0 = y, x1 = xp02, y1 = y, cx0 = xp01, cy0 = yp01,
cx1 = xm01, cy1 = ym01, pne_color = "red", pne_width = 2)

Output

quadratic()

This method adds a parabola glyph to bokeh figure. The function has same parameters as beizer(), except cx0 and cx1.

Example

The code given below generates a quadratic curve.

x = 2
y = 4
xp02 = x + 0.3
xp01 = x + 0.2
xm01 = x - 0.4
yp01 = y + 0.1
ym01 = y - 0.2
x = x,
y = y,
xp02 = x + 0.4,
xp01 = x + 0.1,
yp01 = y + 0.2,
fig.quadratic(x0 = x, y0 = y, x1 = x + 0.4, y1 = y + 0.01, cx = x + 0.1,
cy = y + 0.2, pne_color = "blue", pne_width = 3)

Output