Scatter plots are one of the basic graphs used for data visualization. Scatter plot has following options, only first two are mandatory, rest all are optional.
plt.scatter(x, y, s=None, c=None, marker=None, cmap=None, norm=None, vmin=None, vmax=None, alpha=None, linewidths=None, verts=None, edgecolors=None, hold=None, data=None, **kwargs)
Here is simple program using scatter plot
| ################################################################################################ | |
| # name: scatterplot-00.py | |
| # desc: Simple scatter plot | |
| # date: 2018-06-15 | |
| # Author: conquistadorjd | |
| ################################################################################################ | |
| from matplotlib import pyplot as plt | |
| import numpy as np | |
| print('*** Program Started ***') | |
| x= np.arange(1,17,1) | |
| # y= np.arange(2,34,2) | |
| y= np.random.randint(2, 50,size=16) | |
| plt.scatter(x,y,s=None, marker='o',color='g',edgecolors='g',alpha=0.9,label="Jagur") | |
| # labels | |
| plt.xlabel('Sample x Axis') | |
| plt.ylabel('Sample y Axis') | |
| plt.title('This is scatter plot using matplotlib') | |
| plt.legend(loc=2) | |
| # Saving image | |
| plt.savefig('scarrerplot-00.png') | |
| # In case you dont want to save image but just displya it | |
| plt.show() | |
| print('*** Program ended ***') |
Output of this program is as below
Here is a bit complex scatter plot using matplotlib
| ################################################################################################ | |
| # name: scatterplot-01.py | |
| # desc: Complex Scatter plot | |
| # date: 2018-06-15 | |
| # Author: conquistadorjd | |
| ################################################################################################ | |
| from matplotlib import pyplot as plt | |
| import numpy as np | |
| print('*** Program Started ***') | |
| x= np.arange(1,17,1) | |
| y1= np.random.randint(2, 50,size=16) | |
| y2= np.random.randint(2, 50,size=16) | |
| plt.scatter(x,y1,s=None, marker='o',color='g',edgecolors='g',alpha=0.9,label="Jagur") | |
| plt.scatter(x,y2,s=None, marker='*',color='r',edgecolors='r',alpha=0.9,label="Range Rover") | |
| plt.xlabel('Sample x Axis') | |
| plt.ylabel('Sample y Axis') | |
| plt.title('This is scatter plot using matplotlib') | |
| plt.legend(loc=2) | |
| # Saving image | |
| plt.savefig('scarrerplot-01.png') | |
| # In case you dont want to save image but just displya it | |
| plt.show() | |
| print('*** Program ended ***') |
Output of above program
You can read documentation about scatter plot here.