对于简单的界面,您可能需要查看 matplotlib 提供的 GUI 中性小部件,记录在这里 -- http://matplotlib.org/api/widgets_api.html
这是一个使用这些 GUI 中性小部件绘制具有可变参数的函数的简单示例,这些可变参数由三个滑块小部件控制:
import functools
import numpy as np
import pylab
import matplotlib.pyplot as plt
from matplotlib.widgets import Slider, Button, RadioButtons, MultiCursor
def hillfxn(x, B, K, n):
xn = float(x**n)
return (B * xn)/(K**n + xn)
def draw_function(x, y, xlabel="Activator concentration (X)",
ylabel="Promoter activity"):
fig, ax = plt.subplots(1, 1, sharex=True)
plt.subplots_adjust(left=0.15, bottom=0.25)
lines = ax.plot(x, y)
ax.set_xlabel(xlabel)
ax.set_ylabel(ylabel)
ax.set_ylim(0,max(y)*1.1)
return fig, ax, lines
def draw_interactive_controls(n, B, K):
axcolor = 'lightgoldenrodyellow'
axK = plt.axes([0.1, 0.01, 0.75, 0.03], axisbg=axcolor)
axB = plt.axes([0.1, 0.06, 0.75, 0.03], axisbg=axcolor)
axN = plt.axes([0.1, 0.11, 0.75, 0.03], axisbg=axcolor)
Nslider = Slider(axN, "$n$", 1, 10, valinit=n, valfmt='%1.3f')
Bslider = Slider(axB, "$\\beta$", 0, 20, valinit=B, valfmt='%1.3f')
Kslider = Slider(axK, "$K$", 0.01, 20, valinit=K, valfmt='%1.3f')
return Nslider, Bslider, Kslider
def update_plot(val, x=None, lines=None, ax=None,
Nslider=None, Bslider=None, Kslider=None):
n = Nslider.val
B = Bslider.val
K = Kslider.val
y = [hillfxn(i, B, K, n) for i in x]
lines[0].set_ydata(y)
ax.set_ylim(0,max(y)*1.1)
pylab.draw()
if __name__ == "__main__":
# initial values
B, K, n = 5, 5, 1
x= np.linspace(0,30,250)
y = [hillfxn(i, B, K, n) for i in x]
# setup initial graph and control settings
fig, ax, lines = draw_function(x,y)
Nslider, Bslider, Kslider = draw_interactive_controls(n, B, K)
# specify updating function for interactive controls
updatefxn = functools.partial(update_plot, x=x, lines=lines, ax=ax,
Nslider=Nslider, Bslider=Bslider, Kslider=Kslider)
Nslider.on_changed(updatefxn)
Bslider.on_changed(updatefxn)
Kslider.on_changed(updatefxn)
pylab.show()
这将产生如下界面: