numpy, numarray, or numeric?

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  • Christian Convey
    #1

    numpy, numarray, or numeric?

    I need to bang out an image processing library (it's schoolwork, so I
    can't just use an existing one). But I see three libraries competing
    for my love: numpy, numarray, and numeric.

    Can anyone recommend which one I should use? If one is considered the
    officially blessed one going forward, that would be my ideal.

    Thanks,
    Christian
    Tags: None
    • RickMuller
      #2
      Re: numpy, numarray, or numeric?

      On Feb 15, 5:40 pm, "Christian Convey" <christian.con. ..@gmail.com>
      wrote:
      I need to bang out an image processing library (it's schoolwork, so I
      can't just use an existing one). But I see three libraries competing
      for my love: numpy, numarray, and numeric.
      >
      Can anyone recommend which one I should use? If one is considered the
      officially blessed one going forward, that would be my ideal.
      >
      Thanks,
      Christian
      Use numpy; it is the "officially blessed one" that you refer to. It
      has all of the advantages of the other two.

      Numeric was the first library, but it had some drawbacks that led some
      people to develop Numarray, which had some additional features.
      Finally, the numpy project was started to unify the two groups by
      providing some of the new features in a code base consistent with the
      old library as well.

        Comment

        • Frank
          #3
          Re: numpy, numarray, or numeric?

          On Feb 15, 4:40 pm, "Christian Convey" <christian.con. ..@gmail.com>
          wrote:
          I need to bang out an image processing library (it's schoolwork, so I
          can't just use an existing one). But I see three libraries competing
          for my love: numpy, numarray, and numeric.
          >
          Can anyone recommend which one I should use? If one is considered the
          officially blessed one going forward, that would be my ideal.
          >
          Thanks,
          Christian

          Hi,

          yeah numpy is the newest one. It has only one drawback, there is no
          comprehensive documentation available that would be free but of course
          you could buy one. numpy is very similar to the other two packages but
          not identical that means one has always some troulbe finding out how
          things work. For example, in numarray you can calculate the
          eigenvectors of a matrix with eigenvectors(A) , in numpy it is eig(A).
          This looks similar, but the difference is that in numarray the
          eigenvectors are returned as rows and in numpy as columns.

          If someone knows of a free manual, let me know.

          Frank

            Comment

            • RickMuller
              #4
              Re: numpy, numarray, or numeric?

              On Feb 15, 11:23 pm, "Frank" <super...@gmail .comwrote:
              On Feb 15, 4:40 pm, "Christian Convey" <christian.con. ..@gmail.com>
              wrote:
              >
              I need to bang out an image processing library (it's schoolwork, so I
              can't just use an existing one). But I see three libraries competing
              for my love: numpy, numarray, and numeric.
              >
              Can anyone recommend which one I should use? If one is considered the
              officially blessed one going forward, that would be my ideal.
              >
              Thanks,
              Christian
              >
              Hi,
              >
              yeah numpy is the newest one. It has only one drawback, there is no
              comprehensive documentation available that would be free but of course
              you could buy one. numpy is very similar to the other two packages but
              not identical that means one has always some troulbe finding out how
              things work. For example, in numarray you can calculate the
              eigenvectors of a matrix with eigenvectors(A) , in numpy it is eig(A).
              This looks similar, but the difference is that in numarray the
              eigenvectors are returned as rows and in numpy as columns.
              >
              If someone knows of a free manual, let me know.
              >
              Frank

              Frank,

              I bought the manual, and I do recommend it, but I find the most useful
              documentation is in the docstrings, which I view via "pydoc -g" and
              then view in a browser.

              Rick

                Comment

                • Lou Pecora
                  #5
                  Re: numpy, numarray, or numeric?

                  In article <1171591039.085 342.21280@l53g2 000cwa.googlegr oups.com>,
                  "RickMuller " <rpmuller@gmail .comwrote:
                  Use numpy; it is the "officially blessed one" that you refer to. It
                  has all of the advantages of the other two.
                  >
                  Numeric was the first library, but it had some drawbacks that led some
                  people to develop Numarray, which had some additional features.
                  Finally, the numpy project was started to unify the two groups by
                  providing some of the new features in a code base consistent with the
                  old library as well.
                  I agree completely, having converted all my code from Numeric to NumPy.

                  Just my 2 cents.

                  -- Lou Pecora (my views are my own) REMOVE THIS to email me.

                    Comment

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