Plotting a list of x y coordinates in python matplotlib

Question

I have a list of pairs  a  b  that I would like to plot with matplotlib in python as actual x-y coordinates  Currently  it is making two plots  where the index of the list gives the x-coordinate  and the first plot s y values are the as in the pairs and the second plot s y values are the bs in the pairs  To clarify  my data looks like this  li     a b    c d          t  u   I want to do a one-liner that just calls plt plot   incorrect  If I didn t require a one-liner I could trivially do  xs    x 0  for x in li  ys    x 1  for x in li  plt plot xs  ys   How can I get matplotlib to plot these pairs as x-y coordinates

User · Answer

If you want to plot a single line connecting all the points in the list

plt.plot(li[:])

plt.show()

This will plot a line connecting all the pairs in the list as points on a Cartesian plane from the starting of the list to the end. I hope that this is what you wanted.

User · Answer

As per this example   import numpy as np import matplotlib pyplot as plt  N   50 x   np random rand N  y   np random rand N   plt scatter x  y  plt show     will produce     To unpack your data from pairs into lists use zip   x  y   zip  li    So  the one-liner   plt scatter  zip  li

User · Answer

If you have a numpy array you can do this   import numpy as np from matplotlib import pyplot as plt  data   np array        1  2        2  3        3  6      x  y   data T plt scatter x y  plt show

[python] Plotting a list of (x, y) coordinates in python matplotlib

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