Set markers for individual points on a line in Matplotlib

Question

I have used Matplotlib to plot lines on a figure  Now I would now like to set the style  specifically the marker  for individual points on the line  How do I do this   To clarify my question  I want to be able to set the style for individual markers on a line  not every marker on said line

User · Answer

A simple trick to change a particular point marker shape, size... is to first plot it with all the other data then plot one more plot only with that point (or set of points if you want to change the style of multiple points). Suppose we want to change the marker shape of second point:

x = [1,2,3,4,5]
y = [2,1,3,6,7]

plt.plot(x, y, "-o")
x0 = [2]
y0 = [1]
plt.plot(x0, y0, "s")

plt.show()

Result is: Plot with multiple markers

User · Answer

Specify the keyword args linestyle and or marker in your call to plot   For example  using a dashed line and blue circle markers    plt plot range 10   linestyle  --   marker  o   color  b     A shortcut call for the same thing   plt plot range 10    --bo       Here is a list of the possible line and marker styles                                                        character           description                                                        -                solid line style    --               dashed line style    -                dash-dot line style                     dotted line style                     point marker                     pixel marker    o                circle marker    v                triangle down marker                     triangle up marker     lt                 triangle left marker     gt                 triangle right marker    1                tri down marker    2                tri up marker    3                tri left marker    4                tri right marker    s                square marker    p                pentagon marker                     star marker    h                hexagon1 marker    H                hexagon2 marker                     plus marker    x                x marker    D                diamond marker    d                thin diamond marker                     vline marker                     hline marker                                                         edit   with an example of marking an arbitrary subset of points  as requested in the comments   import numpy as np import matplotlib pyplot as plt  xs   np linspace -np pi  np pi  30  ys   np sin xs  markers on    12  17  18  19  plt plot xs  ys   -gD   markevery markers on  plt show       This last example using the markevery kwarg is possible in since 1 4   due to the merge of this feature branch   If you are stuck on an older version of matplotlib  you can still achieve the result by overlaying a scatterplot on the line plot   See the edit history for more details

User · Answer

You can do  import matplotlib pyplot as plt x    1 2 3 4 5  y    2 1 3 6 7   plt plot x  y  style   -   plt show    This will return a graph with the data points marked with a dot

User · Answer

There is a picture show all markers  name and description  i hope it will help you   import matplotlib pylab as plt markers           o   v        lt     gt    1   2   3   4   8   s   p   P       h   H       x   X   D   d           descriptions   point    pixel    circle    triangle down    triangle up   triangle left    triangle right    tri down    tri up    tri left   tri right    octagon    square    pentagon    plus  filled    star    hexagon1    hexagon2    plus    x    x  filled    diamond    thin diamond    vline    hline   x    y    for i in range 5       for j in range 5           x append i          y append j  plt figure   for i j m l in zip x y markers descriptions       plt scatter i j marker m      plt text i-0 15 j 0 15 s m       l  plt axis  -0 1 4 8 -0 1 4 5   plt tight layout   plt axis  off   plt show

User · Answer

For future reference - the Line2D artist returned by plot   also has a set markevery   method which allows you to only set markers on certain points - see https   matplotlib org api  as gen matplotlib lines Line2D html matplotlib lines Line2D set markevery

User · Answer

Hello There is an example  import numpy as np import matplotlib pyplot as ptl  def grafica seno coseno        x   np arange -4 2 np pi  0 3      y   2 np sin x      y2   3 np cos x      ptl plot x  y    -gD       ptl plot x  y2   -rD       for xitem yitem in np nditer  x y            etiqueta    quot    1f  quot  format xitem          ptl annotate etiqueta   xitem yitem   textcoords  quot offset points quot  xytext  0 10  ha  quot center quot       for xitem y2item in np nditer  x y2            etiqueta2    quot    1f  quot  format xitem          ptl annotate etiqueta2   xitem y2item   textcoords  quot offset points quot  xytext  0 10  ha  quot center quot       ptl grid True      return ptl show

[python] Set markers for individual points on a line in Matplotlib

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