plotting error_only size-1 arrays can be converted to Python scalars












1















I want to plot a function and each time I got this error: only size-1 arrays can be converted to Python scalars.
I want to plot my function over the w.



The code is :



import matplotlib.pyplot as plt
import numpy as np
import math
a = 10;
w = np.arange (0.001,10, 0.1)

function = (1/(np.pi*(w**2))+ np.pi)*abs(((-2*math.atan(a))*w)-(2*math.atanh(((w**2) + 1)/(-1*(w**2) + 2*(a**2) +1))*w)+ (np.pi*w) -(2*math.atanh(w/(a))))

plt.plot(w, function)

plt.show()


Thanks for your time.










share|improve this question



























    1















    I want to plot a function and each time I got this error: only size-1 arrays can be converted to Python scalars.
    I want to plot my function over the w.



    The code is :



    import matplotlib.pyplot as plt
    import numpy as np
    import math
    a = 10;
    w = np.arange (0.001,10, 0.1)

    function = (1/(np.pi*(w**2))+ np.pi)*abs(((-2*math.atan(a))*w)-(2*math.atanh(((w**2) + 1)/(-1*(w**2) + 2*(a**2) +1))*w)+ (np.pi*w) -(2*math.atanh(w/(a))))

    plt.plot(w, function)

    plt.show()


    Thanks for your time.










    share|improve this question

























      1












      1








      1








      I want to plot a function and each time I got this error: only size-1 arrays can be converted to Python scalars.
      I want to plot my function over the w.



      The code is :



      import matplotlib.pyplot as plt
      import numpy as np
      import math
      a = 10;
      w = np.arange (0.001,10, 0.1)

      function = (1/(np.pi*(w**2))+ np.pi)*abs(((-2*math.atan(a))*w)-(2*math.atanh(((w**2) + 1)/(-1*(w**2) + 2*(a**2) +1))*w)+ (np.pi*w) -(2*math.atanh(w/(a))))

      plt.plot(w, function)

      plt.show()


      Thanks for your time.










      share|improve this question














      I want to plot a function and each time I got this error: only size-1 arrays can be converted to Python scalars.
      I want to plot my function over the w.



      The code is :



      import matplotlib.pyplot as plt
      import numpy as np
      import math
      a = 10;
      w = np.arange (0.001,10, 0.1)

      function = (1/(np.pi*(w**2))+ np.pi)*abs(((-2*math.atan(a))*w)-(2*math.atanh(((w**2) + 1)/(-1*(w**2) + 2*(a**2) +1))*w)+ (np.pi*w) -(2*math.atanh(w/(a))))

      plt.plot(w, function)

      plt.show()


      Thanks for your time.







      python plot






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 21 '18 at 23:02









      Amir Reza JalaliAmir Reza Jalali

      156




      156
























          1 Answer
          1






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          You'll be better off using numpy.arctan and numpy.arctanh instead of the math equivalents, as they can work with arrays:



          a = 10;
          w = np.arange (0.001,10, 0.1)

          function = (1/(np.pi*(w**2))+ np.pi)*abs(((-2*np.arctan(a))*w)-(2*np.arctanh(((w**2) + 1)/(-1*(w**2) + 2*(a**2) +1))*w)+ (np.pi*w) -(2*np.arctanh(w/(a))))

          plt.plot(w, function)

          plt.show()


          enter image description here






          share|improve this answer























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            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            2














            You'll be better off using numpy.arctan and numpy.arctanh instead of the math equivalents, as they can work with arrays:



            a = 10;
            w = np.arange (0.001,10, 0.1)

            function = (1/(np.pi*(w**2))+ np.pi)*abs(((-2*np.arctan(a))*w)-(2*np.arctanh(((w**2) + 1)/(-1*(w**2) + 2*(a**2) +1))*w)+ (np.pi*w) -(2*np.arctanh(w/(a))))

            plt.plot(w, function)

            plt.show()


            enter image description here






            share|improve this answer




























              2














              You'll be better off using numpy.arctan and numpy.arctanh instead of the math equivalents, as they can work with arrays:



              a = 10;
              w = np.arange (0.001,10, 0.1)

              function = (1/(np.pi*(w**2))+ np.pi)*abs(((-2*np.arctan(a))*w)-(2*np.arctanh(((w**2) + 1)/(-1*(w**2) + 2*(a**2) +1))*w)+ (np.pi*w) -(2*np.arctanh(w/(a))))

              plt.plot(w, function)

              plt.show()


              enter image description here






              share|improve this answer


























                2












                2








                2







                You'll be better off using numpy.arctan and numpy.arctanh instead of the math equivalents, as they can work with arrays:



                a = 10;
                w = np.arange (0.001,10, 0.1)

                function = (1/(np.pi*(w**2))+ np.pi)*abs(((-2*np.arctan(a))*w)-(2*np.arctanh(((w**2) + 1)/(-1*(w**2) + 2*(a**2) +1))*w)+ (np.pi*w) -(2*np.arctanh(w/(a))))

                plt.plot(w, function)

                plt.show()


                enter image description here






                share|improve this answer













                You'll be better off using numpy.arctan and numpy.arctanh instead of the math equivalents, as they can work with arrays:



                a = 10;
                w = np.arange (0.001,10, 0.1)

                function = (1/(np.pi*(w**2))+ np.pi)*abs(((-2*np.arctan(a))*w)-(2*np.arctanh(((w**2) + 1)/(-1*(w**2) + 2*(a**2) +1))*w)+ (np.pi*w) -(2*np.arctanh(w/(a))))

                plt.plot(w, function)

                plt.show()


                enter image description here







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 21 '18 at 23:06









                saculsacul

                30k41740




                30k41740






























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