Matplotlib Unknown projection 3d error

Question

I just installed matplotlib and am trying to run one of there example scripts  However I run into the error detailed below  What am I doing wrong    from mpl toolkits mplot3d import axes3d import matplotlib pyplot as plt  fig   plt figure   ax   fig gca projection  3d   X  Y  Z   axes3d get test data 0 05  cset   ax contour X  Y  Z  16  extend3d True  ax clabel cset  fontsize 9  inline 1   plt show     The error is   Traceback  most recent call last     File   lt string gt    line 245  in run nodebug   File   lt module1 gt    line 5  in  lt module gt    File  C  Python26 lib site-packages matplotlib figure py   line 945  in gca     return self add subplot 111    kwargs    File  C  Python26 lib site-packages matplotlib figure py   line 677  in add subplot     projection class   get projection class projection    File  C  Python26 lib site-packages matplotlib projections   init   py   line 61  in get projection class     raise ValueError  Unknown projection   s     projection  ValueError  Unknown projection  3d

User · Answer

Import mplot3d whole to use  projection    3d     Insert the command below in top of your script  It should run fine    from mpl toolkits import mplot3d

User · Answer

Just to add to Joe Kington s answer  not enough reputation for a comment  there is a good example of mixing 2d and 3d plots in the documentation at http   matplotlib org examples mplot3d mixed subplots demo html which shows projection  3d  working in combination with the Axes3D import   from mpl toolkits mplot3d import Axes3D     ax   fig add subplot 2  1  1      ax   fig add subplot 2  1  2  projection  3d     In fact as long as the Axes3D import is present the line   from mpl toolkits mplot3d import Axes3D     ax   fig gca projection  3d     as used by the OP also works   checked with matplotlib version 1 3 1

User · Answer

I encounter the same problem  and  Joe Kington and  bvanlew s answer solve my problem   but I should add more infomation when you use pycharm and enable auto import   when you format the code  the code from mpl toolkits mplot3d import Axes3D will auto remove by pycharm   so  my solution is  from mpl toolkits mplot3d import Axes3D Axes3D   Axes3D    pycharm auto import fig   plt figure   ax   fig add subplot 111  projection  3d     and it works well

User · Answer

Try this   import matplotlib pyplot as plt import seaborn as sns from mpl toolkits mplot3d import axes3d  fig plt figure figsize  16 12 5   ax fig add subplot 2 2 1 projection  3d    a ax scatter Dataframe  bedrooms   Dataframe  bathrooms   Dataframe  floors    plt plot a

User · Answer

First off  I think mplot3D worked a bit differently in matplotlib version 0 99 than it does in the current version of matplotlib   Which version are you using   Try running  python -c  import matplotlib  print matplotlib    version      I m guessing you re running version 0 99  in which case you ll need to either use a slightly different syntax or update to a more recent version of matplotlib   If you re running version 0 99  try doing this instead of using using the projection keyword argument   import matplotlib pyplot as plt from mpl toolkits mplot3d import axes3d  Axes3D   lt -- Note the capitalization   fig   plt figure    ax   Axes3D fig    lt -- Note the difference from your original code     X  Y  Z   axes3d get test data 0 05  cset   ax contour X  Y  Z  16  extend3d True  ax clabel cset  fontsize 9  inline 1  plt show     This should work in matplotlib 1 0 x  as well  not just 0 99

[python] Matplotlib: "Unknown projection '3d'" error

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