[英]Save multiple plots in a single PDF file
def plotGraph(X,Y):
fignum = random.randint(0,sys.maxint)
plt.figure(fignum)
### Plotting arrangements ###
return fignum
import matplotlib.pyplot as plt
### tempDLStats, tempDLlabels are the argument
plot1 = plotGraph(tempDLstats, tempDLlabels)
plot2 = plotGraph(tempDLstats_1, tempDLlabels_1)
plot3 = plotGraph(tempDLstats_2, tempDLlabels_2)
plt.show()
I want to save all the graphs plot1, plot2, plot3 to a single PDF file.我想将所有图表 plot1、plot2、plot3 保存到一个 PDF 文件中。 Is there any way to achieve it?
有什么办法可以实现吗? I can't include the
plotGraph
function in the main module.我不能在主模块中包含
plotGraph
函数。
There's a function named pyplot.savefig
but that seems to work only with a single figure.有一个名为
pyplot.savefig
的函数,但它似乎只适用于单个图形。 Is there any other way to accomplish it?还有其他方法可以实现吗?
If someone ends up here from google, looking to convert a single figure to a.pdf (that was what I was looking for):如果有人最终从谷歌来到这里,希望将单个图形转换为 a.pdf(这正是我要找的):
import matplotlib.pyplot as plt
f = plt.figure()
plt.plot(range(10), range(10), "o")
plt.show()
f.savefig("foo.pdf", bbox_inches='tight')
For multiple plots in a single pdf file you can use PdfPages对于单个 pdf 文件中的多个图,您可以使用PdfPages
In the plotGraph
function you should return the figure and than call savefig
of the figure object.在
plotGraph
函数中,您应该返回图形,而不是调用图形对象的savefig
。
------ plotting module ------ ------ 绘图模块 ------
def plotGraph(X,Y):
fig = plt.figure()
### Plotting arrangements ###
return fig
------ plotting module ------ ------ 绘图模块 ------
----- mainModule ---- ----- 主模块 -----
from matplotlib.backends.backend_pdf import PdfPages
plot1 = plotGraph(tempDLstats, tempDLlabels)
plot2 = plotGraph(tempDLstats_1, tempDLlabels_1)
plot3 = plotGraph(tempDLstats_2, tempDLlabels_2)
pp = PdfPages('foo.pdf')
pp.savefig(plot1)
pp.savefig(plot2)
pp.savefig(plot3)
pp.close()
import datetime
import numpy as np
from matplotlib.backends.backend_pdf import PdfPages
import matplotlib.pyplot as plt
# Create the PdfPages object to which we will save the pages:
# The with statement makes sure that the PdfPages object is closed properly at
# the end of the block, even if an Exception occurs.
with PdfPages('multipage_pdf.pdf') as pdf:
plt.figure(figsize=(3, 3))
plt.plot(range(7), [3, 1, 4, 1, 5, 9, 2], 'r-o')
plt.title('Page One')
pdf.savefig() # saves the current figure into a pdf page
plt.close()
plt.rc('text', usetex=True)
plt.figure(figsize=(8, 6))
x = np.arange(0, 5, 0.1)
plt.plot(x, np.sin(x), 'b-')
plt.title('Page Two')
pdf.savefig()
plt.close()
plt.rc('text', usetex=False)
fig = plt.figure(figsize=(4, 5))
plt.plot(x, x*x, 'ko')
plt.title('Page Three')
pdf.savefig(fig) # or you can pass a Figure object to pdf.savefig
plt.close()
# We can also set the file's metadata via the PdfPages object:
d = pdf.infodict()
d['Title'] = 'Multipage PDF Example'
d['Author'] = u'Jouni K. Sepp\xe4nen'
d['Subject'] = 'How to create a multipage pdf file and set its metadata'
d['Keywords'] = 'PdfPages multipage keywords author title subject'
d['CreationDate'] = datetime.datetime(2009, 11, 13)
d['ModDate'] = datetime.datetime.today()
Never mind got the way to do it.没关系有办法做到这一点。
def plotGraph(X,Y):
fignum = random.randint(0,sys.maxint)
fig = plt.figure(fignum)
### Plotting arrangements ###
return fig
------ plotting module ------ ------ 绘图模块 ------
----- mainModule ---- ----- 主模块 -----
import matplotlib.pyplot as plt
### tempDLStats, tempDLlabels are the argument
plot1 = plotGraph(tempDLstats, tempDLlabels)
plot2 = plotGraph(tempDLstats_1, tempDLlabels_1)
plot3 = plotGraph(tempDLstats_2, tempDLlabels_2)
plt.show()
plot1.savefig('plot1.png')
plot2.savefig('plot2.png')
plot3.savefig('plot3.png')
----- mainModule ----- ----- 主模块 -----
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