Save the plots into a PDF

Question

plotting module  def plotGraph X Y       fignum   random randint 0 sys maxint      plt figure fignum          Plotting arrangements         return fignum   main module  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  Is there any way to achieve it  I can t include the plotGraph function in the main module    There s a function named pylab savefig but that seems to work only if it s placed along with plotting module  Is there any other way to accomplish it

User · Answer

If someone ends up here from google  looking to convert a single figure to a  pdf  that was what I was looking for    import matplotlib pyplot as plt  f   plt figure   plt plot range 10   range 10    o   plt show    f savefig  foo pdf   bbox inches  tight

User · Answer

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

User · Answer

Never mind got the way to do it    def plotGraph X Y        fignum   random randint 0 sys maxint       fig   plt figure fignum           Plotting arrangements          return fig   ------ plotting module ------  ----- mainModule ----   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 -----

User · Answer

For multiple plots in a single pdf file you can use PdfPages  In the plotGraph function you should return the figure and than call savefig of the figure object   ------ plotting module ------  def plotGraph X Y         fig   plt figure             Plotting arrangements           return fig   ------ plotting module ------  ----- mainModule ----  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

[python] Save the plots into a PDF

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