我的Fig1.savefig功能将我的图形保存为空白屏幕，我该如何解决这个问题？

Question

我正在通过 .csv 文件导入数据并绘制它，但是当我绘制图形并尝试将其保存到我的谷歌驱动器时，它只保存一个没有任何数据的空白图像。我正在使用谷歌协作实验室。这是我的代码：#Displaying the Dataimport matplotlib.pyplot as pltimport numpy as npimport pandas as pdplt.title("Score of Each Raisan Thrown", fontsize ='x-large')plt.ylabel("Valid Raisans Thrown", fontsize='large')plt.xlabel("Score", fontsize= 'large')dart = data[:,0]score =  data[:,1]plt.plot(score ,dart, marker='o', linestyle='none', color='black')ax = plt.subplot()ax.set_facecolor('seashell')# Adding ticks to make my plot easier to understand/readax.set_yticks([20,40,60,80,100,120,140,160,180,200])ax.set_xticks([-16,-14,-12,-10,-8,-6,-4,-2,0,2,4,6,8,10,12,14,-16])fig = plt.figure(figsize=(10,5))fig = plt.gcf()plt.draw()fig.savefig(datapath+'My Experiment1 Plot')plt.show()

Answer 1

因为你的

fig = plt.figure(figsize=(10,5))

fig = plt.gcf()

plt.draw()

fig.savefig(datapath+'My Experiment1 Plot')

出现在所有绘图命令之后，这意味着您正在创建一个新图形而不绘制任何内容并保存它。您需要重新排列命令：

# get the data:

dart = data[:,0]

score =  data[:,1]

# set up the fig and axes:

fig, ax = plt.subplots(figsize=(10,5))

# plot the data

plt.plot(score ,dart, marker='o', linestyle='none', color='black')

# additional formatting

plt.title("Score of Each Raisan Thrown", fontsize ='x-large')

plt.ylabel("Valid Raisans Thrown", fontsize='large')

plt.xlabel("Score", fontsize= 'large')

# even more formatting

ax.set_facecolor('seashell')

# Adding ticks to make my plot easier to understand/read    

ax.set_yticks([20,40,60,80,100,120,140,160,180,200])

ax.set_xticks([-16,-14,-12,-10,-8,-6,-4,-2,0,2,4,6,8,10,12,14,-16])

fig.savefig(datapath+'My Experiment1 Plot')

plt.show()