Matplotlib graph with typical linestyle not showing











up vote
0
down vote

favorite












I want a very simple plot:



import matplotlib.pyplot as plt

import numpy as np



for t in np.linspace(0,2*np.pi,100):

    plt.plot(np.cos(t), np.sin(t), color='blue', linestyle='-', linewidth=7)

plt.show()


But nothing is appearing. I just get an empty plot. Where is my error?






python matplotlib







share|improve this question




















  • 1




    Matplotlib can plot arrays. There's no need to loop here
    – DavidG
    Nov 8 at 17:06















up vote
0
down vote

favorite












I want a very simple plot:



import matplotlib.pyplot as plt

import numpy as np



for t in np.linspace(0,2*np.pi,100):

    plt.plot(np.cos(t), np.sin(t), color='blue', linestyle='-', linewidth=7)

plt.show()


But nothing is appearing. I just get an empty plot. Where is my error?






python matplotlib







share|improve this question




















  • 1




    Matplotlib can plot arrays. There's no need to loop here
    – DavidG
    Nov 8 at 17:06













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I want a very simple plot:



import matplotlib.pyplot as plt

import numpy as np



for t in np.linspace(0,2*np.pi,100):

    plt.plot(np.cos(t), np.sin(t), color='blue', linestyle='-', linewidth=7)

plt.show()


But nothing is appearing. I just get an empty plot. Where is my error?






python matplotlib







share|improve this question















I want a very simple plot:



import matplotlib.pyplot as plt

import numpy as np



for t in np.linspace(0,2*np.pi,100):

    plt.plot(np.cos(t), np.sin(t), color='blue', linestyle='-', linewidth=7)

plt.show()


But nothing is appearing. I just get an empty plot. Where is my error?






python matplotlib




python matplotlib






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 8 at 17:06









DavidG

10.1k102939




10.1k102939










asked Nov 8 at 16:55









waynemystir

4317




4317








  • 1




    Matplotlib can plot arrays. There's no need to loop here
    – DavidG
    Nov 8 at 17:06














  • 1




    Matplotlib can plot arrays. There's no need to loop here
    – DavidG
    Nov 8 at 17:06








1




1




Matplotlib can plot arrays. There's no need to loop here
– DavidG
Nov 8 at 17:06




Matplotlib can plot arrays. There's no need to loop here
– DavidG
Nov 8 at 17:06












2 Answers
2






active

oldest

votes

















up vote
0
down vote



accepted










Just plot the whole arrays:



import matplotlib.pyplot as plt

import numpy as np



t = np.linspace(0,2*np.pi,100):

plt.plot(np.cos(t), np.sin(t), color='blue', linestyle='-',linewidth=7)

plt.show()





share|improve this answer




























    up vote
    0
    down vote













    Each call to plt.plot within the for loop is plotting a separate 'line' that consists on only a single point.



    if you want the code to work you should plot points instead of lines.



    for t in np.linspace(0,2*np.pi,100): plt.plot(np.cos(t), np.sin(t), 'k.')





    share|improve this answer





















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      2 Answers
      2






      active

      oldest

      votes








      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes








      up vote
      0
      down vote



      accepted










      Just plot the whole arrays:



      import matplotlib.pyplot as plt
      
import numpy as np
      

      
t = np.linspace(0,2*np.pi,100):
      
plt.plot(np.cos(t), np.sin(t), color='blue', linestyle='-',linewidth=7)
      
plt.show()





      share|improve this answer

























        up vote
        0
        down vote



        accepted










        Just plot the whole arrays:



        import matplotlib.pyplot as plt
        
import numpy as np
        

        
t = np.linspace(0,2*np.pi,100):
        
plt.plot(np.cos(t), np.sin(t), color='blue', linestyle='-',linewidth=7)
        
plt.show()





        share|improve this answer























          up vote
          0
          down vote



          accepted







          up vote
          0
          down vote



          accepted






          Just plot the whole arrays:



          import matplotlib.pyplot as plt
          
import numpy as np
          

          
t = np.linspace(0,2*np.pi,100):
          
plt.plot(np.cos(t), np.sin(t), color='blue', linestyle='-',linewidth=7)
          
plt.show()





          share|improve this answer












          Just plot the whole arrays:



          import matplotlib.pyplot as plt
          
import numpy as np
          

          
t = np.linspace(0,2*np.pi,100):
          
plt.plot(np.cos(t), np.sin(t), color='blue', linestyle='-',linewidth=7)
          
plt.show()






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 8 at 17:14









          user8408080

          77238




          77238
























              up vote
              0
              down vote













              Each call to plt.plot within the for loop is plotting a separate 'line' that consists on only a single point.



              if you want the code to work you should plot points instead of lines.



              for t in np.linspace(0,2*np.pi,100): plt.plot(np.cos(t), np.sin(t), 'k.')





              share|improve this answer

























                up vote
                0
                down vote













                Each call to plt.plot within the for loop is plotting a separate 'line' that consists on only a single point.



                if you want the code to work you should plot points instead of lines.



                for t in np.linspace(0,2*np.pi,100): plt.plot(np.cos(t), np.sin(t), 'k.')





                share|improve this answer























                  up vote
                  0
                  down vote










                  up vote
                  0
                  down vote









                  Each call to plt.plot within the for loop is plotting a separate 'line' that consists on only a single point.



                  if you want the code to work you should plot points instead of lines.



                  for t in np.linspace(0,2*np.pi,100): plt.plot(np.cos(t), np.sin(t), 'k.')





                  share|improve this answer












                  Each call to plt.plot within the for loop is plotting a separate 'line' that consists on only a single point.



                  if you want the code to work you should plot points instead of lines.



                  for t in np.linspace(0,2*np.pi,100): plt.plot(np.cos(t), np.sin(t), 'k.')






                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 8 at 17:00









                  BioHazZzZard

                  1




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