Save matplotlib file to a directory

Question

Here is the simple code which generates and saves a plot image in the same directory as of the  code  Now  is there a way through which I can save it in directory of choice    import matplotlib import matplotlib pyplot as plt  fig   plt figure   ax   fig add subplot 111  ax plot range 100    fig savefig  graph png

User · Answer

Here is a simple example for saving to a directory external usb drive  using Python version 2 7 10 with Sublime Text 2 editor   import numpy as np  import matplotlib pyplot as plt  X   np linspace -np pi  np pi  256  endpoint   True  C  S   np cos X   np sin X   plt plot X  C  color    blue   linewidth   1 0  linestyle    -   plt plot X  S  color    red   linewidth   1 0  linestyle    -    plt savefig   Volumes seagate temp swap sin cos 2 png   dpi   72

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You should be able to specify the whole path to the destination of your choice  E g   plt savefig  E  New Folder Name of the graph jpg

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In addition to the answers already given  if you want to create a new directory  you could use this function   def mkdir p mypath          Creates a directory  equivalent to using mkdir -p on the command line         from errno import EEXIST     from os import makedirs path      try          makedirs mypath      except OSError as exc    Python  gt 2 5         if exc errno    EEXIST and path isdir mypath               pass         else  raise   and then   import matplotlib import matplotlib pyplot as plt  fig   plt figure   ax   fig add subplot 111  ax plot range 100      Create new directory output dir    some new directory  mkdir p output dir   fig savefig     graph png  format output dir

User · Answer

The simplest way to do this is as follows     save results to     Users S Desktop Results   plt savefig save results to    image png   dpi   300      The image is going to be saved in the save results to directory with name image png

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You just need to put the file path  directory  before the name of the image  Example   fig savefig   home user Documents graph png     Other example   fig savefig   home user Downloads MyImage png

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You can use the following code  name   mypic  plt savefig  path to file     format name     If you want to save in same folder where your code lies ignore the path to file and just format with name  If you have folder name  Images  in the just one level outside of your python script  you can use   name   mypic  plt savefig  Images     format name     The default file type in saving is   png  file format   If you want to save in loop  then you can use the unique name for each file such as counter of the for loop  If i is the counter   plt savefig  Images     format i     Hope this helps

User · Answer

If the directory you wish to save to is a sub-directory of your working directory  simply specify the relative path before your file name       fig savefig  Sub Directory graph png     If you wish to use an absolute path  import the os module       import os     my path   os path abspath   file      Figures out the absolute path for you in case your working directory moves around              fig savefig my path     Sub Directory graph png     If you don t want to worry about the leading slash in front of the sub-directory name  you can join paths intelligently as follows        import os     my path   os path abspath   file      Figures out the absolute path for you in case your working directory moves around      my file    graph png              fig savefig os path join my path  my file

User · Answer

Here s the piece of code that saves plot to the selected directory  If the directory does not exist  it is created   import os import matplotlib pyplot as plt  script dir   os path dirname   file    results dir   os path join script dir   Results    sample file name    sample   if not os path isdir results dir       os makedirs results dir   plt plot  1 2 3 4   plt ylabel  some numbers   plt savefig results dir   sample file name

User · Answer

According to the docs savefig accepts a file path  so all you need is to specify a full  or relative  path instead of a file name

[python] Save matplotlib file to a directory

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