matplotlib markers

Markers

You can use the keyword argument marker to

emphasize each point with a specified marker:

Example

Mark each point with a circle:



import matplotlib.pyplot as plt

import numpy as np



ypoints = np.array([3, 8, 1, 10])



plt.plot(ypoints, marker = 'o')

plt.show()



Result:







Try it Yourself »

Example

Mark each point with a circle:

Result:

Example

Mark each point with a star:



...



plt.plot(ypoints, marker = '*')

...



Result:







Try it Yourself »

Example

Mark each point with a star:

Result:

Marker Reference

You can choose any of these markers:

Format Strings fmt

You can use also use the shortcut string notation parameter to specify the marker.

This parameter is also called fmt, and is written with this syntax:

Example

Mark each point with a circle:



import matplotlib.pyplot as plt

import numpy as np



ypoints = np.array([3, 8, 1, 10])



plt.plot(ypoints, 'o:r')

plt.show()



Result:







Try it Yourself »

Example

Mark each point with a circle:

Result:

The marker value can be anything from the Marker Reference above.

The line value can be one of the following:

Line Reference

Note: If you leave out the line value in the fmt parameter, no line will be plottet.

The short color value can be one of the following:

Color Reference

Marker Size

You can use the keyword argument markersize or the

shorter version, ms to set the size of the markers:

Example

Set the size of the markers to 20:



import matplotlib.pyplot as plt

import numpy as np



ypoints = np.array([3, 8, 1, 10])



plt.plot(ypoints, marker = 'o', ms = 20)

plt.show()



Result:







Try it Yourself »

Example

Set the size of the markers to 20:

Result:

Marker Color

You can use the keyword argument markeredgecolor or

the shorter mec to set the color of the

edge of the markers:

Example

Set the EDGE color to red:



import matplotlib.pyplot as plt

import numpy as np



ypoints = np.array([3, 8, 1, 10])



plt.plot(ypoints, marker = 'o', ms = 20, mec = 'r')

plt.show()



Result:







Try it Yourself »

Example

Set the EDGE color to red:

Result:

You can use the keyword argument markerfacecolor or

the shorter mfc to set the color inside the edge of the markers:

Example

Set the FACE color to red:



import matplotlib.pyplot as plt

import numpy as np



ypoints = np.array([3, 8, 1, 10])



plt.plot(ypoints, marker = 'o', ms = 20, mfc = 'r')

plt.show()



Result:







Try it Yourself »

Example

Set the FACE color to red:

Result:

Use both the mec and mfc arguments to color of the entire marker:

Example

Set the color of both the edge and the face to red:



import matplotlib.pyplot as plt

import numpy as np



ypoints = np.array([3, 8, 1, 10])



plt.plot(ypoints, marker = 'o', ms = 20, mec = 'r', mfc = 'r')

plt.show()



Result:







Try it Yourself »

Example

Set the color of both the edge and the face to red:

Result:

You can also use Hexadecimal color values:

Example

Mark each point with a beautiful green color:



...



plt.plot(ypoints, marker = 'o', ms = 20, mec = '#4CAF50', mfc = '#4CAF50')

...



Result:







Try it Yourself »

Example

Mark each point with a beautiful green color:

Result:

Or any of the 140 supported color names.

Example

Mark each point with the color named "hotpink":



...



plt.plot(ypoints, marker = 'o', ms = 20, mec = 'hotpink', mfc = 'hotpink')

...



Result:







Try it Yourself »

Example

Mark each point with the color named "hotpink":

Result: