Python PyPlot不打印图像
我创建了以下测试代码,代码运行良好。但执行时不会显示该绘图。我错过什么了吗?我使用pyplot创建绘图。当我使用plt.savefig(“test.png”)时,图表被创建并保存Python PyPlot不打印图像,python,Python,我创建了以下测试代码,代码运行良好。但执行时不会显示该绘图。我错过什么了吗?我使用pyplot创建绘图。当我使用plt.savefig(“test.png”)时,图表被创建并保存 import numpy import matplotlib matplotlib.use('agg') import matplotlib.pyplot as plt from studentRegression import studentReg from class_vis import prettyPictur
import numpy
import matplotlib
matplotlib.use('agg')
import matplotlib.pyplot as plt
from studentRegression import studentReg
from class_vis import prettyPicture, output_image
from ages_net_worth import ageNetWorthData
ages_train, ages_test, net_worths_train, net_worth_test = ageNetWorthData()
plt.clf()
plt.scatter(ages_train, net_worths_train, color="b", label="train data")
plt.legend(loc=2)
plt.xlabel("ages")
plt.ylabel("net worths")
plt.show()
def ageNetWorthData():
random.seed(42)
numpy.random.seed(42)
ages = []
for ii in range(100):
ages.append( random.randint(20,65) )
net_worths = [ii * 6.25 + numpy.random.normal(scale=40.) for ii in ages]
### need massage list into a 2d numpy array to get it to work in LinearRegression
ages = numpy.reshape( numpy.array(ages), (len(ages), 1))
net_worths = numpy.reshape( numpy.array(net_worths), (len(net_worths), 1))
from sklearn.cross_validation import train_test_split
ages_train, ages_test, net_worths_train, net_worths_test = train_test_split(ages, net_worths)
return ages_train, ages_test, net_worths_train, net_worths_test
您正在使用“非交互式”后端(agg)。只需删除该行:
matplotlib.use('agg')
您可以检查文档。显示的
ageNetWorthData()
是在文件ages\u net\u worth
中还是与绘图代码在同一文件中?