change figure size and figure format in matplotlib

Question

I  want to obtain fig1 exactly of 4 by 3 inch sized  and in tiff format correcting the program below   import matplotlib pyplot as plt list1    3 4 5 6 9 12  list2    8 12 14 15 17 20  plt plot list1  list2  plt savefig  fig1 png   dpi   300  plt close     Any help

User · Answer

If you need to change the figure size after you have created it  use the methods  fig   plt figure   fig set figheight value height  fig set figwidth value width    where value height and value width are in inches  For me this is the most practical way

User · Answer

You can set the figure size if you explicitly create the figure with  plt figure figsize  3 4     You need to set figure size before calling plt plot   To change the format of the saved figure just change the extension in the file name  However  I don t know if any of matplotlib backends support tiff

User · Answer

The first part  setting the output size explictly  isn t too hard   import matplotlib pyplot as plt list1    3 4 5 6 9 12  list2    8 12 14 15 17 20  fig   plt figure figsize  4 3   ax   fig add subplot 111  ax plot list1  list2  fig savefig  fig1 png   dpi   300  fig close     But after a quick google search on matplotlib   tiff  I m not convinced that matplotlib can make tiff plots   There is some mention of the GDK backend being able to do it   One option would be to convert the output with a tool like imagemagick s convert    Another option is to wait around here until a real matplotlib expert shows up and proves me wrong  -

User · Answer

You can change the size of the plot by adding this before you create the figure  plt rcParams  quot figure figsize quot      16 9

[python] change figure size and figure format in matplotlib

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