Question

我正在尝试使用滑块更改条形数以及条形大小。如果我们只打印滑块值的输出，滑块工作得很好。但是，当我尝试使用控制台崩溃时更改绘图。

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.widgets import Slider

// I have a function to generate two list bins and bins_count
// which I use to plot bar chart. 
// I am just writing the part in which I am having issue.

fig, ax = plt.subplots()
plt.subplots_adjust(left=0.25, bottom=0.3)

pl = plt.bar(bins, bins_count, align = 'edge')

axcolor = 'lightgoldenrodyellow'
mzlowerslide = plt.axes([0.25, 0.02, 0.65, 0.03], facecolor=spcolor)
mzupperslide = plt.axes([0.25, 0.07, 0.65, 0.03], facecolor=spcolor)
binslide = plt.axes([0.25, 0.12, 0.65, 0.03], facecolor=spcolor)

low_mz = Slider(mzlowerslide, 'Lower Limit', 0, max(mass), valinit=lower_range)
high_mz = Slider(mzupperslide, 'Upper Limit', 0, max(mass), valinit=upper_range)
numbins = Slider(binslide, 'No. of Bins', 0, 100, valinit=binsize)

def update(val):
    lower = int(low_mz.val)
    upper = int(high_mz.val)
    binn = int(numbins.val)

    bins, bins_count = chart_values(mass, upper, lower, binn)


   pl.set_xdata(bins)
   pl.set_height(bins_count)
   fig.canvas.draw_idle()

low_mz.on_changed(update)
high_mz.on_changed(update)
numbins.on_changed(update)

plt.show()

解

我添加了一个子图并在再次绘制之前清除该子图代码：

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.widgets import Slider

我有一个生成两个列表箱和bins_count的功能我用来绘制条形图。我只是在撰写我遇到问题的部分。

fig = plt.figure()
ax = fig.add_subplot (111)
fig.subplots_adjust(left=0.25, bottom=0.3)

ax.bar(bins, bins_count, align = 'edge')

axcolor = 'lightgoldenrodyellow'
mzlowerslide = plt.axes([0.25, 0.02, 0.65, 0.03], facecolor=spcolor)
mzupperslide = plt.axes([0.25, 0.07, 0.65, 0.03], facecolor=spcolor)
binslide = plt.axes([0.25, 0.12, 0.65, 0.03], facecolor=spcolor)

low_mz = Slider(mzlowerslide, 'Lower Limit', 0, max(mass), valinit=lower_range)
high_mz = Slider(mzupperslide, 'Upper Limit', 0, max(mass), valinit=upper_range)
numbins = Slider(binslide, 'No. of Bins', 0, 100, valinit=binsize)

def update(val):
    lower = int(low_mz.val)
    upper = int(high_mz.val)
    binn = int(numbins.val)

    bins, bins_count = chart_values(mass, upper, lower, binn)

    ax.clear ()
    ax.bar (bins, bins_count, align = 'edge')
    fig.canvas.draw()

low_mz.on_changed(update)
high_mz.on_changed(update)
numbins.on_changed(update)

plt.show()

想要使用滑块更改matplotlib中的条形图

0 个答案: